Codan Radio Communications VT-3-150-SN VT-3/140-SN & VT-3/160-SN VHF TRANSMITTERS User Manual IM21 VT3150AMP VHF Tx Amplifier Manual

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Document Description	VHF Tx Manual including schematics and parts list
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Date Submitted	2001-01-30 00:00:00
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Document Title	IM21-VT3150AMP VHF Tx Amplifier Manual
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Document Author:	Daniels Electronics Ltd

MT-3 RADIO SYSTEMS
VHF TRANSMITTER
INSTRUCTION MANUAL
VT-3 132 - 174 MHz
Covers model:
VT-3/140-SWA2, VT-3/160-SWA2
VT-3/140-SWA8, VT-3/160-SWA8
VT-3/140-SNA2, VT-3/160-SNA2
VT-3/140-SNA8, VT-3/160-SNA8
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue:
Issue Date:
Printing Date:
Part No.:
Previous Issue:
May 1998
Previous Issue Date: April 1997
January 2001
IM21-VT3150
Daniels Electronics Ltd.
Victoria, B.C.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
ii
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
TABLE OF CONTENTS
Page
GENERAL................................................................................................................. 1-1
1.1
Introduction .................................................................................................... 1-1
1.2
Manual Organization ...................................................................................... 1-1
1.3
VT-3 132 - 174 MHz Transmitter Family Models.......................................... 1-2
1.4
Performance Specifications............................................................................. 1-3
1.4.1
General............................................................................................... 1-3
1.4.2
Audio Specifications........................................................................... 1-4
1.4.3
Physical Specifications ....................................................................... 1-5
SYSTEM OVERVIEW .............................................................................................. 2-1
2.1
Transmitter Operation..................................................................................... 2-1
2.2
Frequency Selection........................................................................................ 2-3
2.2.1
Synthesizer Transmitter.................................................................... 2-3
2.3
Transmitter Assembly and Adjustment ........................................................... 2-4
2.3.1
Complete Transmitter Alignment ........................................................ 2-4
2.3.2
Frequency Change.............................................................................. 2-5
2.3.3
Output Power Adjustment................................................................... 2-5
2.3.4
Deviation Setting................................................................................. 2-6
2.3.5
Setting RF Alarm Thresholds ............................................................. 2-6
2.4
Recommended Test Equipment List................................................................ 2-6
2.5
Repair Note..................................................................................................... 2-7
2.6
Printed Circuitboard Numbering Convention.................................................. 2-7
ILLUSTRATIONS..................................................................................................... 3-1
3.1
MT-3 Transmitter Front Panel........................................................................ 3-1
3.2
MT-3 Transmitter Case - Exploded View ....................................................... 3-2
PARTS LIST.............................................................................................................. 4-1
REVISION HISTORY............................................................................................... 5-1
MODULE MANUALS
Transmitter Main Board Instruction Manual ......................................IM20-MT3TXMN
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz................IM21-VT3150AMP
Enhanced Synthsizer Instruction Manual OS(R/T)-3A/H 29-470 MHz .. IM10-OS3AH
VHF Transmitter Channel Designation Table ..................................... IM21-VT3150CT
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
iii
RF Exposure Warning
This transmitting equipment conforms to SAR (Specific Absorption Rate) limits regarding exposure of human
beings to radio frequency electromagnetic energy, as defined in the following national and international standards
and guidelines:
1.
Industry Canada Radio Standards Specification 102 (RSS-102), Evaluation Procedure for Mobile and
Portable Radio Transmitters with respect to Health Canada’s Safety Code 6 for Exposure of Humans to
Radio Frequency Fields;
2.
Health Canada Safety Code 6, Limits of Human Exposure to Radiofrequency Electromagnetic Fields in the
Frequency Range from 3 kHz to 300 GHz1;
3.
United States Federal Communications Commission, Code of Federal Regulations; 47 CFR Part 1,
§ 1.1310 Radiofrequency radiation exposure limits; and
4.
American National Standards Institute (ANSI) criteria for localized SAR in Section 4.2 of “IEEE Standard
for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to
300 GHz”2.
Notes:
A. The SAR limit for uncontrolled exposure of persons not classed as RF and microwave exposed
workers (including the general public) for transmitter equipment operating below 10 GHz, as defined
in the references above, is 2 W/m2 (0.2 mW/cm2).
B. This transmitting equipment is designed for use with an outdoor antenna with a characteristic antenna
gain of 10 dBi, typically mounted at a significant height above ground to provide for adequate signal
coverage. To ensure that the general public is not exposed to a power density above the recommended
limit of 2 W/m2 (0.2 mW/cm2), the equipment must be installed such that the following minimum safe
distances from the antenna are maintained:
6.3 m (20.7 ft)
3.5 m (11.3 ft)
1.8 m (5.9 ft)
when configured with
when configured with
standalone (i.e. no PA)
100 W PA
30 W PA
8W
C. The following power density formula has been utilized in determining minimum safe distances:
S=
PG
4πR 2
where: S = Power density (in appropriate units, e.g. mW/cm2)
P = Power input to the Antenna (in appropriate units, e.g., mW)
G = Power gain of the antenna in the direction of interest relative to an isotropic radiator
R = Distance to the center of radiation of the antenna (appropriate units, e.g., cm)
Minister of Public Works and Government Services, Canada 1999, Cat. H46- 2/ 99- 237E, ISBN 0- 662- 28032- 6
ANSI/IEEE C95.1–1992, Copyright 1992 by the Institute of Electrical and Electronics Engineers, Inc., New York, New York 10017
RF Exposure Warning
1
GENERAL
1.1
Introduction
The VT-3 132 - 174 MHz Transmitter is a low power, synthesized FM transmitter capable of
operating in 12.5 kHz or 25/30 kHz channels. The transmitter operates continuous duty in one of
two frequency bands: 132 to 150 MHz or 150 to 174 MHz and its output power is continuously
adjustable from 0.5 T0 2.0 or 2.0 to 8.0 Watts. A modular design allows each of the transmitter's
modules; MT-3 Transmitter Board, MT-3 Audio Processor, VT-3/150 Amplifier, and OS-3H150
Synthesizer Module to be individually assembled and tested. This facilitates construction, tuning,
maintenance as well as troubleshooting procedures. The synthesizer module can be programmed to
have up to 16 channels exclusive to one frequency band.
The VT-3 132 - 174 MHz Transmitter is designed to interface with Daniels Electronics' MT-3
Repeater System while maintaining MT-2 System compatibility. Both repeater systems are
characterized by dependable, low maintenance performance under the most severe environmental
conditions.
1.2
Manual Organization
The organization of this manual reflects the modular makeup of the VT-3 product line. Each
module is fully described within its respective submanual, all of which are contained within this
document. In general, each submanual contains:
1. A functional description and specification summary,
2. a detailed technical description (Theory of Operation) and
3. assembly, setup and alignment procedures relevent to that particular module.
The module manuals are as follows.
Note: material presented in a given "sub-manual" may include information related to other module
versions not directly appllicable to the VT-3 132 - 174 MHz Transmitter family (eg, the OS-3H
Synthesizer Instruction Manual covers models from 29 MHz to 512 MHz).
VHF Enhanced Transmitter Instruction Manual: This manual provides an overview of the complete
transmitter, manual organization and assembly in terms of the other modules.
MT-3 Transmitter Main Board Instruction Manual: This manual pertains to the audio processor
module, transmitter Main Board and Front Panel Board. Most of the user selectable options are
accessed within the Transmitter Main Board module, including channel selection. Since all external
connections (including power and signal lines) are made to the Transmitter Main Board, most of the
material pertaining to transmitter operation and installation is found here.
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
1-1
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz : The amplifier module provides the final
stages of RF power amplification and harmonic filtering for the transmitter. This manual is intended
primarily as a reference since the amplifier module is adjusted at the factory.
Enhanced Synthesizer Instruction Manual OS(R/T)-3(A/H) 132 - 470 MHz: This manual pertains
to the enhanced synthesizer module.
VHF Transmitter Channel Designation Table VT-3 132 - 174 MHz: This document relates
operating frequency to the transmitter channel number (see section 2.1).
1.3
VT-3 132 - 174 MHz Transmitter Family Models
There are 8 distinct models in the VT-3/150 Synthesized Transmitter family each with different
bands of operation, channel spacing and/or power outputs. The 8 models are as follows:
• VT-3/140-SNA2 - synthesized, 132-150 MHz band, 5.0/6.25 kHz channels, 0.5-2.0 W
• VT-3/140-SWA2 - synthesized, 132-150 MHz band, 5.0/6.25 kHz channels, 0.5-2.0 W
• VT-3/140-SNA8 - synthesized, 132-150 MHz band, 5.0/6.25 kHz channels, 2.0-8.0 W
• VT-3/140-SWA8 - synthesized, 132-150 MHz band, 5.0/6.25 kHz channels, 2.0-8.0 W
• VT-3/160-SNA2 - synthesized, 150-174 MHz band, 5.0/6.25 kHz channels, 0.5-2.0 W
• VT-3/160-SWA2 - synthesized, 150-174 MHz band, 5.0/6.25 kHz channels, 0.5-2.0 W
• VT-3/160-SNA8 - synthesized, 150-174 MHz band, 5.0/6.25 kHz channels, 2.0-8.0 W
• VT-3/160-SWA8 - synthesized, 150-174 MHz band, 5.0/6.25 kHz channels, 2.0-8.0 W
The transmitters' band of operation is determined by select components in the synthesizer module
and the channel width is determined by the roll-off of the splatter filter on the MT-3 Audio
Processor.
1-2
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
1.4
Performance Specifications
invisible text
1.4.1
General
The following is a general set of specifications for the generic VT-3/150 transmitter. Additional
specifications, specific to individual modules may be found in their respective submanuals.
Type:
MT-3 Series Transmitter.
Family:
VT-3/150.
Compatibility:
MT-2 Series and MT-3 Series Radio Systems.
Frequency Range:
132 to 174 MHz.
RF Power Output:
Adjustable: 0.5 to 2.0 W and 2.0 to 8.0 W.
Modulation:
11K0F3E or 16K0F3E (Frequency Modulation).
System Impedance:
50 Ω; Type N connector.
Duty Cycle:
100%; Continuous operation from -40°C to +60°C.
Spurious Emissions:
More than 80 dB below carrier.
Harmonic Emissions:
More than 90 dB below carrier.
Transmitter Mismatch Protection:
20:1 VSWR at all phase angles.
Transmitter Alarm:
Forward power sense and reverse VSWR;
• open collector output (separate or 'OR'ed
configuration);
• linear output (separate lines only).
Operating Temperature Range:
-30˚C to +60˚C, optional -40˚C temperature test.
Operating Humidity:
95% RH (non-condensing) at +25°C.
Operating Voltage:
+13.8 Vdc Nominal (range +11 to +16 Vdc),
+9.5 Vdc Regulated.
Transmit Current:
2.5 Amps at 8 Watts RF Power Output.
Front Panel Controls:
NORM (repeat mode), OFF, and KEY TX (Tx on).
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
1-3
PTT Activation:
• Active to ground with or without time-out-timer;
• Microphone activated with or without time-outtimer;
• Front Panel switch: KEY TX - without time-outtimer;
• NORM - with or without time-out-timer.
• Isolated (optional relay) with or without time-outtimer.
PTT Time-Out-Timer:
Selectable from 1 sec. to 8 hrs. (factory set 5 min.).
1.4.2
Audio Specifications
Audio Input:
Balanced 600 ohm or unbalanced (optional).
Input level sensitivity, -25 dBm to 0 dBm.
Audio Response:
Pre-emphasis (6 dB per octave); +1.0 to -2.0 dB
from 300 Hz to 3 kHz;
Flat Audio Response:
+1 to -1 dB from 100 Hz to 3 kHz.
Audio Deviation:
Preset to ±3.0 kHz with a 1 kHz tone.
Subtone Audio Input 1:
0.5 Vpp at 200 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 1 Frequency range:
60 Hz to 300 Hz.
Subtone Audio Input 2:
0.5 Vpp at 100 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 2 Frequency range:
DC to 150 Hz.
Direct Modulation Input:
0.5 Vrms at 1 kHz or ±3 kHz deviation.
Direct Modulation Frequency range:
DC to 5 kHz.
Audio Distortion:
Less than 2.5% THD; 1 kHz tone at 1.5 kHz or
3 kHz deviation (-40°C to +60°C).
Hum and Noise:
Better than 55 dB
(test receiver band limited: 400 Hz to 30 kHz).
1-4
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
1.4.3
Physical Specifications
Physical Dimensions:
Width:
Height:
Depth:
7.1 cm (2.8 in)
12.8 cm (5.05 in)
19 cm (7.5 in)
Module Weight:
1.5 kg (3.3 lbs)
Corrosion Prevention:
Anodized aluminum construction. Stainless steel
hardware. Selectively conformal coated glass epoxy 2
and 4 layer printed circuitboards. Gold plated
module connectors.
Module Design:
Compact Eurostandard modular design. Plug-in
modules mate with Daniels standard M3 repeater
subrack. Subracks / modules comply with IEEE
1101, DIN 41494 and IEC 297-3 (mechanical size /
modular arrangement).
External Connections:
RF Connection: type N connector located on the
transmitter module front panel. Motherboard
Connections (Audio, Power, and Control) are made
through a 48 pin, gold plated, type F connector on the
rear of the transmitter module. User connection
made through mated "mother board" assembly of the
repeater subrack. Type F standard connector
complies with DIN 41612 Level 2 (200 mating
cycles, 4 day 10 ppm SO2 gas test with no functional
impairment and no change in contact resistance).
Handle Text Colour:
Red.
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
1-5
2
SYSTEM OVERVIEW
2.1
Transmitter Operation
Several modules are integrated by the VT-3 Transmitter Main board to provide the complete
transmitter. The Transmitter Main Board, Front Panel Board and Audio Processor are generic in
that they apply to all transmitter models. The Front Panel Board and Audio Processor are soldered
directly to the Transmitter Main Board and are treated collectively in the Transmitter Main Board
Manual. The operating frequency and power range is determined by the choice of Amplifier and
Frequency Synthesizer Module, which plugs in to the Transmitter Main Board and can be changed
with minimal effort. Circuitry and jumpers on the Transmitter Main Board control the operation of
all modules and the operation of the transmitter, overall. Technical details and a complete
description of transmitter operation can be found in the Transmitter Main Board Manual.
The VT-3 132 - 174 MHz transmitter requires two power supplies; a regulated +9.5 Vdc supply
and a +13.8 Vdc supply, the latter of which is connected only to the Amplifier Module. The
(nominally) +13.8 Vdc supply's range is +11 Vdc to +16 Vdc. For the 0.5 to 2.0 Watt
transmitters, there is no current drawn on the 13.8 Vdc supply. For the 2.0 to 8.0 Watt transmitters,
the current drawn from the +13.8 Vdc supply (while transmitting at the rated power) is
approximately 1000 mA with temperature, operating frequency and power supply voltage. The
current drawn by the 13.8 Vdc line should not exceed 1500 mA. The +9.5 Vdc current drawn by
all transmitter models while transmitting at the rated power is approximately 1300 mA and should
not exceed 1500 mA. The VT-3 Transmitter has four different standby modes that trade-off
standby current consumption for start-up speed. The standby modes are determined by three
jumpers (refer to the MT-3 Transmitter Main Board Manual): jumper J6 which always turns on the
'+9.5 Vdc Switched' supply, jumper J7 which selects the power source for the MT-3 Audio
Processor and jumper J18 which selects the enable line for the OS-3H150 Synthesizer Module.
• MODE 1: Jumper J6 out
- the audio processor is switched by a PTT signal
- the synthesizer module is switched by a PTT signal
- standby current: Typically 7 mA
- start-up time:
Typically 50 ms
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2-1
• MODE 2: Jumper J6 in, jumper J7 in the 'y' position, jumper J18 in the 'x' position
- the audio processor is switched by a PTT signal
- the synthesizer module is enabled all of the time
- standby current: Typically 65 mA
- start-up time:
Typically 25 ms
• MODE 3: Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'y' position
- the audio processor is enabled all of the time
- the synthesizer module is switched by a PTT signal
- standby current: Synthesized - not used in this mode
- start-up time:
Synthesized - not used in this mode
• MODE 4: Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'x' position
- the audio processor is enabled all of the time
- the synthesizer or crystal module is enabled all of the time
- standby current: Typically 90 mA
- start-up time:
Typically 10 ms
The front panel depicted in Section 3.1 bears a DPDT toggle switch (mounted on the Front Panel
Board; see the Transmitter Main Board Manual) which controls the operation of the VT-3 132 174 MHz Transmitter. When in the 'OFF' position, the transmitter is turned off; however, the +13.8
Vdc remains on the Transmitter Main Board terminals and on the Amplifier Module. When in the
'KEYED' position, +9.5 Vdc is supplied to the transmitter circuitry and the transmitter is
continously transmitting. When this switch is in the 'NORM' position, +9.5 Vdc is supplied to the
transmitter circuitry although the transmitter remains quiescent until keyed from one of several
Push-To-Talk (hereafter PTT) inputs. The red indicator LED is illuminated during transmit.
Microphone, RF output and optional reference input are mounted on the front panel; power and
other signal connections are provided by a type 'F' connector at the rear of Transmitter Main Board.
Details on their function can be found in the Transmitter Main Board Manual.
2-2
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2.2
Frequency Selection
invisible text
2.2.1
Synthesizer Transmitter
Eight backplane connections are used to communicate with the synthesizer unit. Pins D28, D30,
and D32 are used (in house) to program the synthesizer. Channel select lines (pins D20, D22,
D24, and D26) are used once the synthesizer is programmed to select one of 16 channels. If the
channel select lines are all low (channel 0) the frequency for the synthesizer is read from switches
FSW1 (most significant), FSW2, FSW3, and FSW4 (least significant). Refer to the VT-3/150
Channel Designation Table Manual for the simplified channel number and frequency information.
For all VT-3/140 models (132-150 MHz) with:
• 5 kHz channel increments (BCD settings from 0000 to 4999):
− 128 MHz 
 Tx
CHNL #=  frequency


5 kHz
or
Tx frequency = [CHNL #× 5 kHz] + 128 MHz
• 6.25 kHz channel increments (BCD settings from 5000 to 9999):
− 128 MHz 
 Tx
CHNL #=  frequency
 +5000

6.25 kHz
or
Tx frequency = [(CHNL #-5000) × 6.25 kHz ] + 128 MHz
For all VT-3/160 models (150-174 MHz) with:
• 5 kHz channel increments (BCD settings from 0000 to 4999):
− 150 MHz 
 Tx
CHNL #=  frequency


5 kHz
or
Tx frequency = [CHNL #× 5 kHz] + 150 MHz
• 6.25 kHz channel increments (BCD settings from 5000 to 9999):
− 150 MHz 
 Tx
CHNL #=  frequency
 +5000

6.25 kHz
or
Tx frequency = [(CHNL #-5000) × 6.25kHz ] + 150 MHz
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2-3
A channel can be selected from a set of 15 (maximum possible) factory programmed channels by
the four channel select lines available at the rear 'F' connector on the Transmitter Main Board. A
single user selectable channel is set by switches located on the Transmitter Main Board. See the
Transmitter Main Board Manual for details.
2.3
Transmitter Assembly and Adjustment
All modules are mounted on the Transmitter Main Board which then forms a single assembly. An
enclosure is formed by an extruded aluminum shell that slides over the Transmitter Main Board as
illustrated in section 3.2). This shell also serves as a heatsink to remove heat from the Amplifier
module and for this reason, it is important that the four screws that bond the shell to the amplifier
module (Screws B in Section (3-2)) be installed before prolonged operation of the transmitter.
Moreover, the surface of the Amplifier module that contacts the shell should be clean and free of
foreign material. The enclosure is completed by the installation of front and rear plates which are
fastened to the Transmitter Main Board (see Transmitter Main Board Manual for parts lists).
Transmitter alignment is performed on a module by module basis and detailed steps are provided in
the respective manuals. Alignment is simplified by using an SR-3 Sub rack, SM-3 System Monitor,
and RF extender cable to provide transmitter power and signal interconnection. Alternatively, +9.5
Vdc and +13.8 Vdc, as well as any required test signals, may be applied directly to the individual
modules. Refer to the corresponding manuals for details.
2.3.1
Complete Transmitter Alignment
A complete Transmitter Alignment is performed at the factory and should not be required under
normal circumstances. A large change in operating frequency, as discussed in the next section,
may require a complete realignment operation. This operation requires that all the transmitter
modules be aligned on a per module basis in the following order.
2-4
Sequence
(1)
Module
Transmitter Main Board
(2)
(3)
(4)
Synthesizer
Amplifier
Audio Processor
Manual Reference
Section 2.2 of this manual,
Transmitter Main Board Manual.
Synthesizer Manual
Amplifier Manual
Transmitter Main Board Manual
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2.3.2
Frequency Change
The transmitter is initially aligned at the factory for the frequency stamped on the 'Factory Set
Operating Frequency' label (see section 3.1). This label should list the frequency at which the last
complete transmitter alignment was performed. For a small frequency change, a simple channel
change (see section 2.2) may be all that is required. A larger frequency change may involve the
realignment of other modules. The frequency change in question is the accumulated frequency
change in relation to the frequency stamped on the label. For example, if the frequency is changed
by 0.5 MHz from that stamped on the label, then a second frequency change of 1 MHz in the same
direction would result in a total change of 1.5 MHz. The action taken would be on the basis of the
1.5 MHz value. Failure to perform a realignment after a large frequency change could result in
unreliable transmitter operation or transmitter operation that does not conform to the published
specifications. The allowable frequency change is summarized below.
Note: It is advisable to confirm these frequency ranges with the individual module manuals,
notably the Amplifier and Synthesizer Module, as they are subject to change with updated
versions. The values in the module manuals take precedent over those tabulated.
FOR MODEL ALL VT-3 132 - 174 MHz Transmitters
Size of Frequency Change
Modules to be Aligned
less than ± 0.2 MHz
Transmitter Main Board (Channel Change)
between ± 0.2 and ± 0.5 MHz
Transmitter Main Board (Channel Change),
Audio Processor (see section 2.3.4)
between ± 0.5 and ± 1.0 MHz
Transmitter Main Board (Channel Change),
Audio Processor (see section 2.3.4), Synthesizer
check RF alarm thresholds (section 2.3.5)
± 1.0 MHz or greater
Complete alignment
2.3.3
Output Power Adjustment
The RF power output of the amplifier is set to its rated value of 2.0 Watts or 8.0 Watts at the
factory. This should not require adjustment under normal circumstances. However, should it be
necessary to correct the output power, the 'Output Power Adjustment' which is described in the
Amplifier Manual can be adjusted accordingly. If the Synthesizer module is replaced, it is strongly
recommended that the amplifer undergo a realignment as described in the Amplifier Module, unless
it is confirmed that the original and replacement Synthesizer module have identical output power
(within ± 0.5 dBm).
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2-5
2.3.4
Deviation Setting
The transmitter maximum deviation range is set by jumpers at the factory to ± 5.0 kHz for the
VT-3 132 - 174 MHz transmitter. However, under some conditions such as a large change in
transmitter operating frequency, the deviation control may need adjustment. The transmitter
deviation is dependent on the operating frequency and this dependency is likely to be more severe at
the band edges. For frequency changes exceeding ± 0.5 MHz, especially at the band edges, the
deviation should at least be checked and corrected if necessary. See the Audio Processor section of
the Transmitter Main Board Manual for details on setting the transmitter deviation. Note that the
adjustment of the balance compression levels, which is also discussed in the Audio Processor
alignment section, is not required as this adjustment should not be affected by a change in
frequency or deviation settings.
2.3.5
Setting RF Alarm Thresholds
The VSWR and Forward Power Alarms are factory preset to give alarm conditions for a 3:1
VSWR and 50 % forward power respectively. The Amplifier Manual describes how to adjust these
settings, should different levels be required. If the alarm thresholds are crital to operation of a
particular installation and if the transmitter undergos a large change in frequency (see section 2.3.2
above), the threshold alarm levels, particularly the VSWR alarm, should be checked.
2.4
Recommended Test Equipment List
Alignment of the transmitter requires the following test equipment or its equivalent.
Dual Power Supply:
Oscilloscope / Multimeter:
Current Meter:
Radio communications test set :
VSWR 3:1 mismatch load:
Alignment Tool:
Regulated +9.5 Vdc at 2 A.
Regulated +13.8 Vdc at 2 A - Topward TPS-4000
Fluke 97 Scopemeter
Fluke 75 multimeter
Marconi Instruments 2955R
JFW 50T-035-3.0:1
Johanson 4192
It is recommended that the radio communications test set be frequency locked to an external
reference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set to
within its ±1 ppm frequency tolerance.
2-6
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2.5
Repair Note
The transmitter is mainly made up of surface mount devices which should not be removed or
replaced using an ordinary soldering iron. Removal and replacement of surface mount components
should be performed only with specifically designed surface mount rework and repair stations
complete with ElectroStatic Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place of
manual vacuum type desoldering tools when removing jumpers. This will help prevent damage to
the circuit boards.
2.6
Printed Circuitboard Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuitboard (PCB) numbering convention in which the last two digits of the circuitboard
number represent the circuitboard version. For example:
• PCB number 43-912010 indicates circuitboard version 1.0;
• PCB number 50002-02 indicates circuitboard version 2.0.
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
2-7
3
ILLUSTRATIONS
3.1
MT-3 Transmitter Front Panel
TRANSMITTER
FACTORY SET
OPERATING
FREQUENCY
FREQUENCY (MHz)
160.00000
33.25000
TRANSMIT INDICATOR LED
TX
ON / OFF SWITCH
NORM
OFF
KEY TX
MICROPHONE
CONNECTOR
MIC
RF OUT
REFERENCE
TYPE N RF
OUTPUT JACK
SMA REFERENCE
INPUT JACK
INPUT
RED TEXT
MADE IN CANADA
MADE IN CANADA
VT-3/160-SWA8
TRANSMITTER
MODEL IDENTIFIER
VT3150M1
TM
DANIELS
ELECTRONICS LTD.
VHF Transmitter Instruction Manual
3-1
3.2
MT-3 Transmitter Case - Exploded View
3 FINGER GASKET (2)
MT3TXM2B
Instructions
1. Remove the four screws (A) in the Front panel.
2. Remove the four screws (B) on the side of the Transmitter Case.
DANIELS
DE ELECTRONICS
3-2
VHF Transmitter Instruction Manual
4
PARTS LIST
Description
Part No.
Qty.
LABEL/LEXAN, 14HP, VHF: RED
3536-10111405
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
4-1
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VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
5
REVISION HISTORY
ISSUE DATE
DESCRIPTION AND (REASON)
• Manual formatted to modular style. All previous revision history in
issue 2.
May 98
VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
5-1
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VHF Enhanced Transmitter Instruction Manual VT-3 132 - 174 MHz
MT-3 RADIO SYSTEMS
TRANSMITTER
MAIN BOARD
INSTRUCTION MANUAL
Covers: Version 1.7 of the Transmitter Main Board
Version 1.6 & 1.8 of the FM Audio Processor Board
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue:
Issue Date:
Printing Date:
Part No.:
Previous Issue:
November 1998 Previous Issue Date: May 1998
January 2001
IM20-MT3TXMN
Daniels Electronics Ltd.
Victoria, B.C.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
ii
Transmitter Main Board Instruction Manual
TABLE OF CONTENTS
Page
GENERAL...................................................................................................................1-1
1.1
Introduction ....................................................................................................1-1
1.2
Performance Specifications.............................................................................1-1
1.2.1
General...............................................................................................1-1
1.2.2
Audio Specifications...........................................................................1-2
THEORY OF OPERATION........................................................................................2-1
2.1
Transmitter Main Board..................................................................................2-1
2.1.1
General...............................................................................................2-1
2.1.2
Transmitter Push-To-Talk...................................................................2-1
2.1.2.1
Microphone PTT ....................................................................2-1
2.1.2.2
PTT With Time-Out-Timer.....................................................2-2
2.1.2.3
PTT No Time-Out-Timer........................................................2-2
2.1.2.4
Optional Relay........................................................................2-2
2.1.2.5
PTT Output.............................................................................2-3
2.1.2.6
PTT Voltage Switching...........................................................2-3
2.1.2.7
Transmitter Standby Modes....................................................2-3
2.1.3
Audio Circuits.....................................................................................2-4
2.1.3.1
Microphone Audio..................................................................2-5
2.1.3.2
Received Audio.......................................................................2-5
2.1.4
Channel Selection ...............................................................................2-5
2.1.4.1
Synthesized Transmitter..........................................................2-5
2.1.4.2
Crystal Controlled Transmitter................................................2-6
2.1.5
Amplifier Circuits ...............................................................................2-6
2.1.6
Time-Out-Timer Circuitry...................................................................2-6
2.2
MT-3 Front Panel Board ................................................................................2-8
2.3
MT-3 Audio Processor (Version 1.6).............................................................2-8
2.3.1
General...............................................................................................2-8
2.3.2
Power Requirements...........................................................................2-8
2.3.3
Audio Processor Turn-on Time ..........................................................2-9
2.3.4
Audio Processor Signals.....................................................................2-9
2.3.4.1
Audio Processor Outputs........................................................2-9
2.3.4.2
Audio Processor Modulation Output......................................2-10
2.3.4.3
Audio Processor Low Frequency / Direct Mod. Output .........2-10
2.3.4.4
Audio Processor Inputs ..........................................................2-10
2.3.4.5
Audio Processor Microphone Input........................................2-11
2.3.4.6
Audio Processor Balanced Input.............................................2-11
2.3.4.7
Audio Processor Auxiliary Input ............................................2-11
2.3.4.8
Audio Processor Subtone Inputs ............................................2-11
2.3.4.9
Audio Processor Direct Modulation Input..............................2-12
2.4
MT-3 Audio Processor (Version 1.8).............................................................2-12
Transmitter Main Board Instruction Manual
iii
2.4.1
General...............................................................................................2-12
2.4.2
Power Requirements...........................................................................2-12
2.4.3
Audio Processor Turn-on Time ..........................................................2-13
2.4.4
Audio Processor Signals.....................................................................2-13
2.4.4.1
Audio Processor Outputs........................................................2-13
2.4.4.2
Audio Processor Modulation Output......................................2-14
2.4.4.3
Audio Processor Low Frequency / Direct Mod. Output .........2-14
2.4.4.4
Audio Processor Inputs ..........................................................2-14
2.4.4.5
Audio Processor Microphone Input........................................2-15
2.4.4.6
Audio Processor Balanced Input.............................................2-15
2.4.4.7
Audio Processor Auxiliary Input ............................................2-15
2.4.4.8
Audio Processor Subtone Inputs ............................................2-15
2.4.4.9
Audio Processor Direct Modulation Input..............................2-16
2.5
Low Frequency Modulation............................................................................2-16
TRANSMITTER ALIGNMENT.................................................................................3-1
3.1
General...........................................................................................................3-1
3.2
Repair Note.....................................................................................................3-1
3.3
Printed Circuitboard Numbering Convention..................................................3-1
3.4
Recommended Test Equipment List................................................................3-1
3.5
Standard Factory Settings and Jumper Configuration.....................................3-2
3.5.1
MT-3 Transmitter Board Factory Configuration.................................3-2
3.5.2
MT-3 Audio Processor Factory Configuration...................................3-3
3.6
MT-3 Transmitter Board Alignment ...............................................................3-4
3.6.1
General...............................................................................................3-4
3.6.2
MT-3 Transmitter Board Test Points..................................................3-5
3.7
Module Installation and Removal....................................................................3-5
3.8
MT-3 Audio Processor Alignment..................................................................3-6
3.8.1
General...............................................................................................3-6
3.8.2
MT-3 Audio Processor Standard Deviation Adjustment.....................3-6
3.9
Standard Factory Settings and Jumper Configuration.....................................3-8
3.9.1
MT-3 Audio Processor Factory Configuration (Version 1.8).............3-8
3.10 MT-3 Audio Processor Alignment (Version 1.8)............................................3-10
3.10.1
General...............................................................................................3-10
3.10.2
MT-3 Audio Processor Standard Deviation Adjustment.....................3-10
3.11 Low Frequency Modulation Configuration.....................................................3-11
3.11.1
MT-3 Transmitters..............................................................................3-11
3.11.2
MT-3 Transmitter Audio Processors ..................................................3-12
3.11.3
Synthesizer and Crystal Controlled Oscillator ....................................3-13
3.11.4
Tuning the Transmitter........................................................................3-14
TRANSMITTER INTERCONNECT PIN DEFINITIONS........................................4-1
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS ..............................................5-1
5.1
Transmitter Block Diagram.............................................................................5-1
5.2
Transmitter Main Board Electrical Assembly..................................................5-3
iv
Transmitter Main Board Instruction Manual
5.2.1
Transmitter Main Board Top Side Component Layout.......................5-3
5.2.2
Transmitter Main Board Bottom Side Component Layout..................5-4
5.2.3
Transmitter Main Board Schematic Diagram......................................5-5
5.3
Front Panel Board...........................................................................................5-6
5.3.1
Front Panel Board Component Layout...............................................5-6
5.3.2
Front Panel Board Schematic..............................................................5-7
5.4
Audio Processor Electrical Assembly (Version 1.6) .......................................5-8
5.4.1
Audio Processor Component Layout..................................................5-8
5.4.2
Audio Processor Schematic Diagram..................................................5-9
5.5
Audio Processor Electrical Assembly (Version 1.8) .......................................5-10
5.5.1
Audio Processor Component Layout..................................................5-10
5.5.2
Audio Processor Schematic Diagram..................................................5-11
5.5.3
TX Time-Out-Timer Electrical Assembly............................................5-12
5.5.3.1
TX Time-Out-Timer Component Layout................................5-12
5.5.3.2
TX Time-Out-Timer Schematic Diagram................................5-12
PARTS LISTS .............................................................................................................6-1
6.1
Transmitter Main Board Parts List..................................................................6-1
6.1.1
Transmitter Main Board Electrical Parts List ......................................6-1
6.1.2
Transmitter Main Board Mechanical Parts List...................................6-3
6.1.3
MT-3 Front Panel Board Electrical Parts List.....................................6-4
6.2
MT-3 Audio Processor Parts List (Version 1.7).............................................6-4
6.2.1
MT-3 Audio Processor Electrical Parts List (Version 1.6)..................6-4
6.3
MT-3 Audio Processor Parts List (Version 1.8).............................................6-6
6.3.1
MT-3 Audio Processor Electrical Parts List (Version 1.8)..................6-6
REVISION HISTORY.................................................................................................7-1
Transmitter Main Board Instruction Manual
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Transmitter Main Board Instruction Manual
1
GENERAL
invisible text
1.1 Introduction
The MT-3 Transmitter Main Board integrates the MT-3 Front Panel Board, MT-3 Audio
Processor, Synthesizer or Crystal Controlled Oscillator module, and Amplifier module together to
comprise a MT-3 series transmitter (see section 5.1: MT-3 Transmitter Block Diagram). The Front
Panel Board and the Audio Processor are soldered directly to the Transmitter Main Board while the
Amplifier and the Synthesizer or Crystal Controlled Oscillator module are frequency band sensitive,
plug-in modules. Circuitry and jumpers on the Transmitter Main Board control the operation of the
modules as well as the overall operation of the MT-3 transmitter. Power and signal connections are
made through the 48 pin type 'F' connector on the rear of the Transmitter Main Board where they
are then routed to the other MT-3 modules. The front and rear panels are attached to the
Transmitter Main Board and together with the extruded aluminum shell, form the transmitter
enclosure.
1.2 Performance Specifications
invisible text
1.2.1 General
Type:
MT-3 Series Transmitter
Compatibility:
MT-3 Series Amplifier, OC-3 Crystal Controlled Oscillator
module, OS-3 and OS-3H Frequency Synthesizer modules.
Modulation:
11K0F3E or 16K0F3E (Frequency Modulation).
Operating Temperature Range:
-30˚C to +60˚C, optional -40˚C to +60˚C temperature test.
Operating Humidity:
95% RH (non-condensing) at +25°C.
Operating Voltage:
+9.5 Vdc Regulated. +13.8 Vdc Nominal (11 - 16 Vdc).
Front Panel Controls:
NORM (repeat mode), OFF, and KEY TX (Tx on).
PTT Activation:
• Active to ground with or without time-out-timer;
• Microphone activated with or without time-out-timer;
• Front Panel switch:
KEY TX - without time-out-timer;
• NORM - with or without time-out-timer.
• Isolated (optional relay) with or without time-out-timer.
PTT Time-Out-Timer:
Selectable from 1 sec. to 8 hrs. (Factory Default: 5 min.).
Transmitter Main Board Instruction Manual
1-1
1.2.2 Audio Specifications
Audio Input:
Balanced 600 ohm or unbalanced (optional).
Input level sensitivity, -25 dBm to 0 dBm.
Audio Response:
Pre-emphasis (6 dB per octave); +0.5 to -2.0 dB
from 300 Hz to 3 kHz;
Flat Audio Response:
+1 to -1 dB from 100 Hz to 3 kHz.
Audio Deviation:
Preset to ±1.5 kHz (Narrow Band) or ±3.0 kHz (Wide Band)
with a 1 kHz tone (capable ±2.5 kHz or ±5.0 kHz).
Subtone Audio Input 1:
0.5 Vpp at 200 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 1 Frequency range:
60 Hz to 300 Hz.
Subtone Audio Input 2:
0.5 Vpp at 100 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 2 Frequency range:
DC to 150 Hz.
Direct Modulation Input:
0.5 Vrms at 1 kHz or ±3 kHz deviation.
Direct Modulation Frequency range:
DC to 5 kHz.
1-2
Transmitter Main Board Instruction Manual
2
THEORY OF OPERATION
invisible text
2.1 Transmitter Main Board
invisible text
2.1.1 General
Switch SW1 on the Front Panel Board is a DPDT switch which controls the operation of the
transmitter (refer to the operations section of the Transmitter Manual). When SW1 is in the 'OFF'
position the transmitter is turned off; however, +13.8 Vdc is still present on the Transmitter Main
Board as the +13.8 Vdc supply is not switched. When SW1 is in the 'KEYED' position, +9.5 Vdc
is supplied to the transmitter circuitry and the transmitter is continuously keyed on. When SW1 is
in the 'NORM' position, +9.5 Vdc is supplied to the transmitter circuitry and the transmitter can be
keyed from any of the several Push-To-Talk inputs.
Refer to section 5.2.3 Transmitter Main Board Schematic Diagram.
2.1.2 Transmitter Push-To-Talk
All three of the Push-To-Talk (PTT) inputs that key the transmitter are active low (< +2 Vdc). One
PTT input is on the front panel microphone connector. The other two PTT inputs: PTT WTO
(PTT With Time-Out-Timer) and PTT NTO (PTT No Time-Out-Timer), are on the backplane
connector of the transmitter board. If required, the microphone's PTT input can be configured to
activate the transmitter's Time-Out-Timer (TOT). An isolated PTT input can be made available by
installing an optional relay (RELAY1) and configuring jumpers J1 to J4 so that the relay controls
the PTT circuitry.
2.1.2.1
Microphone PTT
Jumper J1 on the MT-3 Front Panel Board configures the microphone's PTT input (MIC PTT) to
either bypass or activate the transmitter's TOT. Installing surface mount jumper J1 in the 'x'
position (default) selects the MIC PTT NTO line which bypasses the TOT. Installing surface
mount jumper J1 to the 'y' position selects the MIC PTT WTO line which activates the transmitter's
TOT. When SW1 is in the 'KEYED' position the MIC PTT NTO line is automatically grounded.
Refer to Section 5.3.1, "MT-3 Front Panel Board Component Layout" for the location of jumper
J1.
Transmitter Main Board Instruction Manual
2-1
2.1.2.2
PTT With Time-Out-Timer
Pins B10 and Z10 of the backplane connector are the PTT WTO input. When the PTT WTO
signal, which is normally high, falls below +2.0 Vdc, the transmitter is keyed. The transmitter is
disabled when the PTT WTO input rises above +2.3 Vdc or if the TOT's time-out period is
exceeded. If the time-out period is exceeded the PTT WTO input must go high (>+2.3 Vdc) and
then low again in order to rekey the transmitter.
The PTT WTO threshold of approximately +2 Vdc (0.3 Vdc hysteresis) is set by U1a, R1, R2, R3,
R4, R9, and R10 while diodes D1 and D2 provide overvoltage protection for U1a. The PTT WTO
signal output from U1a is 'AND'ed with the MIC PTT WTO by U2a. When either the PTT WTO
or the MIC PTT WTO is activated the output of U2a goes low which triggers the transmitter's TOT
located on the MT-3 Audio Processor. The TOT's output is 'AND'ed with the MIC PTT NTO
signal (U2c) and the PTT NTO signal (U2d). When any one of the preceding three signals (TOT's
output, MIC PTT NTO, PTT NTO) go low the transmitter is activated by transistors Q1 to Q7
which switch power to the various modules.
2.1.2.3
PTT No Time-Out-Timer
Pins B14 and Z14 of the backplane connector are the PTT NTO input. When the PTT NTO signal,
which is normally high, falls below +2.0 Vdc, the transmitter is keyed. As long as the PTT NTO
signal remains below +2.0 Vdc the transmitter will remain keyed. The transmitter is disabled when
the PTT NTO signal rises above +2.3 Vdc.
The PTT NTO threshold of approximately +2 Vdc (0.3 Vdc hysteresis) is set by U1b, R5, R6, R7,
R8, R9, and R10 while diodes D3 and D4 provide overvoltage protection for U1b. The PTT NTO
signal is 'AND'ed with the output of U2c (MIC PTT NTO signal 'AND'ed with the TOT output) by
U2d. When the output of U2d goes low the transmitter is activated by transistors Q1 to Q7 which
switch power to the various modules.
2.1.2.4
Optional Relay
The transmitter's PTT circuitry can be completely isolated by installing RELAY1. Jumpers J1 to J5
configure the relay to provide an isolated PTT input for either the PTT WTO line or PTT NTO line.
The isolated PTT input is enabled by energizing the relay. The transmitter board will accept any of
the Aromat TF2E line relays. These relays are DPDT, single side stable, and have coil voltages
ranging from +3 Vdc to +48 Vdc. Only one set of relay contacts are used to activate the PTT
circuitry.
To configure the isolated input for PTT WTO operation jumpers J2, J3, and J4 must be in the 'y'
position. In this mode, pins B10 and Z10 no longer function as the PTT WTO input; however, pins
B14 and Z14 continue to function as the normal PTT NTO input.
2-2
Transmitter Main Board Instruction Manual
To configure the isolated input for PTT NTO operation jumpers J2, J3, and J4, must be in the 'x'
position. In this mode, pins B14 and Z14 no longer function as the PTT NTO input; however, pins
B10 and Z10 continue to function as the normal PTT WTO input.
2.1.2.5
PTT Output
Pin B24 on the backplane connector is an open drain output (Q9) which is pulled low anytime the
transmitter is keyed and the synthesizer is locked. A crystal controlled transmitter does not have a
locked condition so pin B24 is pulled low anytime the transmitter is keyed. Q9, an N-channel
MOSFET capable of sinking currents up to 2 Amps, is activated by Q8 which is activated by the
Qualified PTT signal (JS2-6) of the Synthesizer or Crystal Controlled Oscillator module. The
Qualified PTT signal also controls the LED ENA line for diode D1 on the front panel board and
enable line for the MT-3 Amplifier Module (JP1-1).
2.1.2.6
PTT Voltage Switching
The PTT voltage switching circuitry is comprised of transistors Q1 through Q7 and the associated
resistors. The base of Q1 is driven by the output of U2d which is the combined PTT signal from
all of the PTT inputs. When the transmitter is keyed, Q1 is turned off and subsequently transistors
Q3, Q4, and Q6 are turned on. Transistors Q3, Q4, and Q6 provide three different functions:
• Q3 provides the active low signal for the Synthesizer or Crystal Controlled Oscillator
module PTT input;
• Q4 turns on Q5 which turns on the +9.5 Vdc Switched supply;
• Q6 turns on Q7 which turns on the +9.5 Vdc PTT Switched supply.
The '+9.5 Vdc Switched' supply (Q5) can also be activated by installing jumper J6 or by externally
grounding the TX Standby Line (pins B12 and Z12). The '+9.5 Vdc PTT Switched' supply and the
'+9.5 Vdc Switched' supply both provide +9.5 Vdc but depending on how jumpers J6, J7 and J18
are configured the transmitter's standby mode will change.
2.1.2.7
Transmitter Standby Modes
The MT-3 series transmitters have four different standby modes that trade-off standby current
consumption for start-up speed. The standby modes are determined by three jumpers: jumper J6
which always turns on the '+9.5 Vdc Switched' supply, jumper J7 which selects the power source
for the MT-3 Audio Processor and jumper J18 which selects the enable line for the OS-3 or OS3H Synthesizer, or OC-3 Crystal Controlled Oscillator module.
The actual current and start-up time may depend on the oscillator source (crystal or synthesizer)
and amplifier module. The current and start-up times given below are representative values
Transmitter Main Board Instruction Manual
2-3
intended only as a guideline. Refer to the instruction manual for the transmitter that came with
your system for specifications.
• MODE 1: Jumper J6 out
- the audio processor is switched by a PTT signal
- the synthesizer or crystal controlled oscillator is switched by a PTT signal
- standby current:
Synthesized - typically 7 mA
Crystal Controlled - typically 6 mA
- start-up time:
Synthesized - typically 50 ms
Crystal Controlled - typically 25 ms
• MODE 2: Jumper J6 in, jumper J7 in the 'y' position, jumper J18 in the 'x' position
- the audio processor is switched by a PTT signal
- the synthesizer or crystal controlled oscillator is enabled all of the time
- standby current:
Synthesized - typically 65 mA
Crystal Controlled - typically 25 mA
- start-up time:
Synthesized - typically 25 ms
Crystal Controlled - typically 25 ms
• MODE 3: Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'y' position
- the audio processor is enabled all of the time
- the synthesizer or crystal controlled oscillator is switched by a PTT signal
- standby current:
Synthesized - not used in this mode
Crystal Controlled - typically 28 mA
- start-up time:
Synthesized - not used in this mode
Crystal Controlled - typically 10 ms
• MODE 4: Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'x' position
- the audio processor is enabled all of the time
- the synthesizer or crystal controlled oscillator is enabled all of the time
- standby current:
Synthesized - typically 90 mA
Crystal Controlled - typically 46 mA
- start-up time:
Synthesized - typically 10 ms
Crystal Controlled - typically 10 ms
2.1.3 Audio Circuits
All of the audio signal conditioning (e.g. limiting, filtering, and pre-emphasis) is performed by the
MT-3 Audio Processor. The transmitter board routes the audio lines from the backplane connector
to the audio processor and then to the synthesizer. The audio lines routed to the audio processor
are: two subtone inputs (backplane pins B22 and Z24), a direct modulation input (pin Z28), a
squelched/flat audio input (pin Z20), a 600 ohm balanced input (pins B18 and Z18), and an audio
control line (pin Z22). The audio processor's balanced input pins are isolated from pins B18 and
2-4
Transmitter Main Board Instruction Manual
Z18 by a transformer (T1). Two audio outputs from the MT-3 Audio Processor are routed to the
synthesizer or crystal control oscillator modules.
2.1.3.1
Microphone Audio
Normally the audio from a transmitter's microphone is transmitted by that transmitter; however, the
Transmitter Main Board can be configured by the MIC IN and MIC OUT lines so that the audio
from an external microphone modulates transmitter. The configuration of the MIC IN (pin Z4) and
MIC OUT (pin B4) lines on the MT-3 Transmitter Board are controlled by jumpers J16 and J17
respectively. Jumper J16 selects the audio source for the MT-3 Audio Processor's microphone
input. Jumper J17 is used to enable or disable the MIC OUT line. Normally the transmitter's
microphone is selected (J16 in the 'x' position) and the MIC OUT line is enabled (J17 is installed).
2.1.3.2
Received Audio
Pin B20 is the audio input from the transmitter's corresponding receiver. The default setting for
this line is to have it AC coupled (Jumper J9 is out) and directly connected to the front panel board
RX AUDIO line (jumpers J10 and J11 in the 'x' position). Audio amplifier U5 can be enabled by
installing jumper J8 which connects power to U5 (continuously in the 'x' position, PTT switched in
the 'y' position). Setting jumper J10 in the 'y' position and jumper J11 in the 'z' position enables the
audio path through the amplifier. Level control for the squelched, de-emphasized audio input line is
provided by R27. Audio amplifier U5 draws approximately 5 mA so it is not normally enabled.
2.1.4 Channel Selection
invisible text
2.1.4.1
Synthesized Transmitter
Seven backplane connections are used to communicate with the synthesizer unit. Pins D28, D30,
and D32 are used (in house) to program the synthesizer. Channel select lines CSEL 0 (least
significant bit) through CSEL 3 (most significant bit), which are available at pins D20, D22, D24,
and D26, are used once the synthesizer is programmed to select one of 16 channels. If the channel
select lines are all low (channel 0) the channel for the synthesizer is read from switches FSW1
(most significant), FSW2, FSW3, and FSW4 (least significant); otherwise one of 15 preprogrammed frequencies is selected. Since the resulting frequency is dependent on the transmitter
model, refer to the section on frequency selection in the Transmitter Manual or to the channel
designation tables for that particular transmitter.
Transmitter Main Board Instruction Manual
2-5
2.1.4.2
Crystal Controlled Transmitter
The OC-3 Crystal Control Oscillator module is a direct replacement for the synthesizer module and
therefore uses the same connections as the synthesizer to connects to the MT-3 Transmitter Main
Board. The channel select lines and switches FSW1 to FSW4 are not used by the crystal control
module as the transmitter's operating frequency is determined by the Crystal Control Oscillator
module's crystal frequency. A frequency multiplication factor, described in the manual for this
module, relates the crystal frequency to the operating frequency .
2.1.5 Amplifier Circuits
The MT-3 series Amplifier has 6 connections that are cabled to the transmitter board: +13.8 Vdc,
+9.5 Vdc, Enable, Forward Power Sense, Reverse Power Sense, and Ground. The +13.8 Vdc
supply (JP1-3) is always on while the +9.5 Vdc supply (JP1-2) is always switched by a PTT
signal. The enable line (JP1-1) is active low and is controlled by the Qualified PTT signal from
the synthesizer module or crystal controlled oscillator module.
Jumpers J12, J13, J14, and J15 are used to configure the amplifier's forward and reverse power
sense lines (JP1-4 and JP1-5). Normally jumpers J13, J14, and J15 are in the 'x' position which
directly connects the amplifier's forward and reverse power sense lines to the backplane connector
(pins B26 and Z26 respectively). The forward and reverse power sense lines from the Amplifier
can be open collector or linear outputs depending on how they are configured in the amplifier
module. In open collector configuration the lines are active low, that is, the output will go low
when a 'fail' condition is detected. If both lines from the amplifier module are configured as open
collector outputs, the power sense lines can be 'OR'ed together to make a general fail indicator
(jumper J12 in, jumpers J13, J14, and J15 in the 'y' position). The Fail Indicator is also an open
collector output; however, the Fail Indicator is active high (the output goes high when a 'fail'
condition is detected). When the transmitter is configured with the general fail indicator option,
pin Z26 (VSWR reverse) is not used and pin B26 becomes the Fail Indicator output.
2.1.6 Time-Out-Timer Circuitry
The MT-3 Transmitter also has an associated programmable push-to-talk (PTT) time-out-timer
(TOT) circuitry on the Transmitter Main Board. The TOT circuitry is powered via J34 from the
continuous +9.5 Vdc supply and is programmable for various time-out periods.
The TOT input trigger (enabled by J33) is normally high and in this state the timer is disabled.
When the input trigger level falls below +2.0 Vdc, the timer is activated, the TOT output trigger
(enable by J35) is pulled low, and the transmitter is keyed. If the input trigger rises above +2.4 Vdc
or if the time-out period is exceeded, the output trigger will go high, disabling the transmitter. If the
time-out period is exceeded, the TOT input trigger must go high and then low again in order to
rekey the transmitter.
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Transmitter Main Board Instruction Manual
The time-out duration is jumper selectable from 1 second to 8 hours. The positions of the jumpers
on the top (Through hole component) side of the Transmitter Main Board. Table 2-1 shows the
time-out duration in minutes for the various jumper settings which are listed as enabled (E: jumper
shorted - in) or disabled (D: jumper left open - out). The standard factory setting of 5 minutes is
shown in bold type in table 2-2.
Table 2-1
Time-Out-Timer Settings
D = DISABLED (no solder jumper installed), E = ENABLED (solder jumper installed). Bold text
represents default settings.
TIME-OUT DURATION
(MINUTES)
J26 = E
J26 = D
J26 = E
J32
J31
J29
J28
J27 = D
J27 = E
J27 = E
0.01
0.01
0.01
0.02
0.03
0.01
0.04
0.06
0.02
0.08
0.12
0.05
0.15
0.23
0.10
0.31
0.47
0.19
0.62
0.94
0.38
1.25
1.88
0.75
2.5
3.75
1.5
5.0
7.5
3.0
10
15
6.0
20
30
12
40
60
24
80
120
48
160
240
96
320
480
192
Transmitter Main Board Instruction Manual
2-7
2.2
MT-3 Front Panel Board
The MT-3 Front Panel Board is a subsection of the MT-3 Transmitter Board which is used to
mount the front panel switch, diode, and microphone connector. The main purpose of the board is
to eliminate a wiring harness for the front panel components. Jumper J1, located on the rear of the
circuitboard, is used to select whether or not the MIC PTT line activates the transmitter's TOT.
Jumper J2 is used to select whether or not Rx Audio or 13.8 Volt is supplied to pin 4 of the
microphone.
• Jumper J1:
'x' position
• Jumper J2:
'x' position
MIC PTT NTO no time-out-timer (factory setting)
'y' position MIC PTT WTO with time-out-timer
Rx Audio enabled to MIC-4 pin (factory setting)
'y' position +13.8 Volts supplied to MIC-4 pin
Refer to section 5.3.2 "MT-3 Front Panel Board Schematic Diagram".
2.3 MT-3 Audio Processor (Version 1.6)
invisible text
2.3.1 General
The MT-3 Audio Processor is a versatile circuitboard that can provide several types of audio
processing for voice or data transmission. Two analog switches on the audio processor, controlled
by a common signal, make it possible to transmit voice or data. A continuous +9.5 Vdc supply
and a switched +8.0 Vdc supply are required to power the module. The MT-3 Audio Processor is
backwards compatible to Daniels Electronics MT-2 series transmitters. Refer to section 5.4.1
"MT-3 Audio Processor Component Layout" and to section 5.4.2 "MT-3 Audio Processor
Schematic Diagram" for component location and designation references.
2.3.2 Power Requirements
The audio processor can be configured for continuous audio standby or for switched audio standby
by the Transmitter Main Board. If fast audio risetime is desired, the transmitter should be operated
in standby mode 2 or 3 as specified in section 2.1.2.7. Power for the microphone input and the
balanced input can be separately disabled by jumpers J3 and J4 respectively if the input is not
required. This results in a current savings of approximately 11 mA per input. The current
requirements for the MT-3 Audio Processor are shown in Table 2-1. The current for the associated
TOT is approximately 4 mA when the transmitter is keyed and is included in the keyed values in the
table below.
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Transmitter Main Board Instruction Manual
Table 2-1
MT-3 Audio Processor Current Consumption.
Function
Current Draw
keyed / unkeyed
Switched Audio Standby
Both Microphone and Balanced Input enabled 29.0 / 0.5 mA
Only Microphone or Balanced Input enabled 17.5 / 0.5 mA
Only Auxiliary Input enabled
6.0 / 0.5 mA
Continuous Audio Standby
Both Microphone and Balanced Input enabled 29.0 / 25.5 mA
Only Microphone or Balanced Input enabled 17.5 / 14.0 mA
Only Auxiliary Input enabled
6.0 / 2.5 mA
2.3.3 Audio Processor Turn-on Time
The turn-on time of the audio processor is 25 ms. This measurement is made with the standard
factory settings with a 1 kHz tone applied to the balanced input. The turn-on time is the time it
takes the audio processor to output a stable audio signal from the time its power (+9.5 Vdc) is
switched on. The turn-on time can be virtually eliminated by configuring the audio processor for
continuous audio standby (see section 2.1.2.7 Transmitter Standby Modes).
2.3.4 Audio Processor Signals
The MT-3 Audio Processor has six audio inputs, two audio outputs and one audio control input.
Five of the audio inputs are used primarily for voice signals. The sixth, the Direct modulation input,
is used primarily for data signals. The audio control input is used to switch audio outputs so the
transmitter can transmit voice or data.
2.3.4.1
Audio Processor Outputs
Both the audio outputs, Modulation Output (P3-1) and Low Frequency / Direct Modulation Output
(P4-2), are gated by audio switches U9 and U10 respectively which are controlled by the Tx Audio
Control Input (P4-4). The audio switches operate complimentary to each other so there can ever
only be one source modulating the transmitter. In standard configuration, the Modulation Output
port is used so switch U9 is always on.
Transmitter Main Board Instruction Manual
2-9
2.3.4.2
Audio Processor Modulation Output
The Modulation Output port is the output port used by all voice input signals. The voice inputs are
combined by summing amplifier U4a which has an associated symmetry control (R14). Op-amp
U4a together with U5a provide the limiting action for the audio processor. After the audio signals
have been combined and limited, they are filtered by a 6 pole lowpass Butterworth filter (U5b, U5c,
and U5d). Jumpers JU24, JU25 and JU26 configure the lowpass filter for narrowband or
wideband operation: jumpers JU24(x and y) to JU26(x and y) are installed for wideband (25 kHz)
channels and are not installed for narrowband (12.5 kHz) channels. The output signal from the
filter is then level adjusted by the deviation control pot, R29, before modulating the transmitter.
In special applications, jumper JU6 can be disabled and JU7 enabled, this allows the transmitter to
be modulated directly from the auxiliary input. This should not be done without external filtering
since jumper JU7 bypasses the limiting and filter circuits.
2.3.4.3
Audio Processor Low Frequency / Direct Mod. Output
The Low Frequency / Direct Modulation Output port has two functions depending on whether the
transmitter is synthesized or crystal controlled. In a synthesized transmitter, this port is used to
modulate the synthesizer reference frequency. The frequency response of this port is typically DC
to 60 Hz. In a crystal controlled transmitter, this port can be used by the Direct Modulation Input
to directly modulate the crystal control oscillator module. The frequency response of this port is
essentially flat from DC to 5 kHz with no limiting or filtering. Amplification, if desired, is provided
by Op-amp U8a which is powered independent of the audio card voice circuits by jumper JU1.
2.3.4.4
Audio Processor Inputs
As previously mentioned, the MT-3 Audio Processor has six audio inputs, five used primarily for
voice signals and one for data signals.
The 6 audio inputs on the audio processor are:
• dynamic microphone input
• 600 ohm balanced input
• 2 subtone inputs
• auxiliary input.
• direct modulation input.
2-10
Transmitter Main Board Instruction Manual
2.3.4.5
Audio Processor Microphone Input
The microphone input has an automatically gain controlled (AGC) preamplifier whose input level is
controlled by R2. The microphone input level control (R2) can accommodate a -25 dBm to 0 dBm
input signal. The compression level for the microphone input is adjusted by R8. The microphone
input is limited and filtered and is output at the standard modulation output port.
2.3.4.6
Audio Processor Balanced Input
The 600 ohm balanced input also has an AGC preamplifier, input level control (R31), and
compression level control (R38). The balanced input level control can accommodate a -25 dBm to
0 dBm input. The balanced input can have a standard 6 dB/octave pre-emphasis response by
enabling jumper JU9 or a flat-audio response by enabling jumper JU10. Like the microphone
input, the balance input is limited and filtered and is output at the standard modulation output port.
2.3.4.7
Audio Processor Auxiliary Input
The auxiliary input is a special input and does not have an AGC preamplifier or an input level
control. This input can be configured for a pre-emphasis response (enable JU14) or a flat-audio
response (enable JU15). The compression level for this input is set by R48. The auxiliary output
is normally summed with the voice signals by op-amp U4a, limited, then filtered and output at the
standard modulation output port. When jumper JU6 is disabled and jumper JU7 is enabled, the
auxiliary input can be used to directly modulate the transmitter. Care should be taken when directly
modulating the transmitter with the auxiliary input because the MT-3 transmitters use direct FM
modulation and there is no filtering or limiting action provided by the auxiliary input. The input
level to the auxiliary input should be -18 dBm and can be driven by one of three inputs:
• the balanced input – JU11 enabled
• the tone/digital input – JU12 enabled
• the direct modulation input – JU13 enabled
When the 600 ohm balanced input is connected to the auxiliary input, the balanced input level
control can be used to adjust the level for the auxiliary input. When either the tone/digital input or
the direct modulation input are used, the input level is not adjustable.
2.3.4.8
Audio Processor Subtone Inputs
There are two subtone inputs available on the audio processor. Both subtone inputs can be
individually configured to be output from the standard Modulation Output port or to be output from
the Low Frequency / Direct Modulation Output. In standard configuration, Subtone 1 is summed
Transmitter Main Board Instruction Manual
2-11
with the voice signals to be output from the standard Modulation Output port while Subtone 2 is
not used. Both subtone inputs have an input level control.
2.3.4.9
Audio Processor Direct Modulation Input
The Direct Modulation Input is an extremely versatile input. This port is designed to be used for
data signals. Depending on the application, the signal can be amplified, AC or DC coupled and
output to the Modulation Output or the Low Frequency / Direct Modulation Output port. Please
consult the factory for specific jumper settings for your application.
2.4 MT-3 Audio Processor (Version 1.8)
invisible text
2.4.1 General
The MT-3 Audio Processor is a versatile circuitboard that can provide several types of audio
processing for voice or data transmission. Two analog switches on the audio processor, controlled
by a common signal, make it possible to transmit voice or data. A continuous +9.5 Vdc supply
and a switched +8.0 Vdc supply are required to power the module. The MT-3 Audio Processor is
backwards compatible to Daniels Electronics MT-2 series transmitters. Refer to section 5.5.1
"MT-3 Audio Processor Component Layout" and to section 5.5.2 "MT-3 Audio Processor
Schematic Diagram" for component location and designation references.
2.4.2 Power Requirements
The audio processor can be configured for continuous audio standby or for switched audio standby
by the Transmitter Main Board. If fast audio risetime is desired, the transmitter should be operated
in standby mode 2 or 3 as specified in section 2.1.2.7 with JU36 on the audio processor in the 'y'
position. Power for the microphone input and the balanced input can be disabled by jumpers JU36
and JU40 respectively if the input is not required. This results in a current savings of
approximately 3.5 mA per input. The current requirements for the MT-3 Audio Processor are
shown in Table 3-1. The current for the associated TOT is approximately 4 mA when the
transmitter is keyed. The keyed values in the table below do not include the current for the TOT.
2-12
Transmitter Main Board Instruction Manual
Table 3-1
MT-3 Audio Processor Current Consumption.
Function
Current Draw
keyed / unkeyed
Switched Audio Standby
Both Microphone and Balanced Input enabled 6.0 / 0.3 mA
Only Microphone or Balanced Input enabled 4.5 / 0.3 mA
Only Auxiliary Input enabled
3.0 / 0.3 mA
Continuous Audio Standby
Both Microphone and Balanced Input enabled 6.0 / 3.5 mA
Only Microphone or Balanced Input enabled 4.5 / 1.5 mA
Only Auxiliary Input enabled
3.0 / 0.5 mA
2.4.3 Audio Processor Turn-on Time
The turn-on time of the audio processor is 25 ms. This measurement is made with the standard
factory settings with a 1 kHz tone applied to the balanced input. The turn-on time is the time it
takes the audio processor to output a stable audio signal from the time its power (+9.5 Vdc) is
switched on. The turn-on time can be virtually eliminated by configuring the audio processor for
continuous audio standby (see section 2.1.2.7 Transmitter Standby Modes).
2.4.4 Audio Processor Signals
The MT-3 Audio Processor has six audio inputs, two audio outputs and one audio control input.
Five of the audio inputs are used primarily for voice signals. The sixth, the Direct modulation input,
is used primarily for data signals. The audio control input is used to switch audio outputs so the
transmitter can transmit voice or data.
2.4.4.1
Audio Processor Outputs
Both the audio outputs, Modulation Output (P3-1) and Low Frequency / Direct Modulation Output
(P4-2), are gated by audio switches U9 and U10 respectively which are controlled by the Tx Audio
Control Input (P4-4). The audio switches operate complimentary to each other so there can ever
only be one source modulating the transmitter. In standard configuration, the Modulation Output
port is used so switch U9 is always on.
Transmitter Main Board Instruction Manual
2-13
2.4.4.2
Audio Processor Modulation Output
The Modulation Output port is the output port used by all voice input signals. The voice inputs are
combined by U1, a gain level programmable compandor which is configured as an automatic level
control amplifier. Op-amp U4a together with U5a provide the limiting action for the audio
processor. After the audio signals have been combined and limited, they are filtered by a 6 pole
lowpass Butterworth filter (U5b, U5c, and U5d). Jumpers JU24, JU25 and JU26 configure the
lowpass filter for narrowband or wideband operation: jumpers JU24(x and y) to JU26(x and y) are
installed for wideband (25 kHz) channels and are not installed for narrowband (12.5 kHz)
channels. The output signal from the filter is then level adjusted by the deviation control pot, R29,
before modulating the transmitter.
In special applications, jumper JU6 can be disabled and JU7 enabled, this allows the transmitter to
be modulated directly from the auxiliary input. This should not be done without external filtering
since jumper JU7 bypasses the limiting and filter circuits.
2.4.4.3
Audio Processor Low Frequency / Direct Mod. Output
The Low Frequency / Direct Modulation Output port has two functions depending on whether the
transmitter is synthesized or crystal controlled. In a synthesized transmitter, this port is used to
modulate the synthesizer reference frequency. The frequency response of this port is typically DC
to 300 Hz. In a crystal controlled transmitter, this port can be used by the Direct Modulation Input
to directly modulate the crystal control cscillator module. The frequency response of this port is
essentially flat from DC to 5 kHz with no limiting or filtering. Amplification, if desired, is provided
by Op-amp U3b.
2.4.4.4
Audio Processor Inputs
As previously mentioned, the MT-3 Audio Processor has six audio inputs, five used primarily for
voice signals and one for data signals.
The 6 audio inputs on the audio processor are:
• dynamic microphone input
• 600 ohm balanced input
• 2 subtone inputs
• auxiliary input.
• direct modulation input.
2-14
Transmitter Main Board Instruction Manual
2.4.4.5
Audio Processor Microphone Input
The microphone input has an automatically level controlled (ALC) preamplifier U1 whose input
level is controlled by R2. The microphone input level control (R2) can accommodate a -25 dBm to
0 dBm input signal. The microphone input is limited and filtered and is output at the standard
modulation output port. The microphone input can have a standard 6dB/octave pre-emphasis
response or a flat-audio response, jumper JU3 at 'x' and 'y' position respectively.
2.4.4.6
Audio Processor Balanced Input
The 600 ohm balanced input also uses the ALC preamplifier U1, with input level control pot (R31).
The balanced input level control can accommodate a -25 dBm to 0 dBm input. Like the microphone
input, the balance input is limited and filtered and is output at the standard modulation output port.
2.4.4.7
Audio Processor Auxiliary Input
The auxiliary input is a special input and does not have an ALC preamplifier or an input level
control. This input can be configured for a pre-emphasis response (enable JU14) or a flat-audio
response (enable JU15). The compression level for this input is set by R48. The auxiliary output
is normally summed with the voice signals by op-amp U4a, limited, then filtered and output at the
standard modulation output port. When jumper JU6 is disabled and jumper JU7 is enabled, the
auxiliary input can be used to directly modulate the transmitter. Care should be taken when directly
modulating the transmitter with the auxiliary input because the MT-3 transmitters use direct FM
modulation and there is no filtering or limiting action provided by the auxiliary input. The input
level to the auxiliary input should be -18 dBm and can be driven by one of three inputs:
• the balanced input – JU11 'x' position
• the tone/digital input – JU12 enabled
• the direct modulation input – JU13 enabled
When the 600 ohm balanced input is connected to the auxiliary input, the balanced input level
control can be used to adjust the level for the auxiliary input. When either the tone/digital input or
the direct modulation input are used, the input level is not adjustable.
2.4.4.8
Audio Processor Subtone Inputs
There are two subtone inputs available on the audio processor. Both subtone inputs can be
individually configured to be output from the standard Modulation Output port or to be output from
the Low Frequency / Direct Modulation Output. In standard configuration, Subtone 1 is summed
with the voice signals to be output from the standard Modulation Output port while Subtone 2 is
not used. Both subtone inputs have an input level control.
Transmitter Main Board Instruction Manual
2-15
2.4.4.9
Audio Processor Direct Modulation Input
The Direct Modulation Input is an extremely versatile input. This port is designed to be used for
data signals. Depending on the application, the signal can be amplified, AC or DC coupled and
output to the Modulation Output or the Low Frequency / Direct Modulation Output port. Please
consult the factory for specific jumper settings for your application.
2.5
Low Frequency Modulation
The transmitter has an additional option to address low frequency user modulation requirements. A
phase modulated bandwidth from 0 (dc) to 100 Hz (PLL loop filter bandwidth) allows specialized
applications such as paging or trunking where a separate low frequency digital/analog modulation
channel is required. Low Frequency Modulation allows external access to the low frequency
modulation capabilities of the synthesizer module. The DIRECT MODULATION inputs on the J1
control connector of the M-3 motherboard will be used (B20 for TX A, and A20 for
TX B). See section 3.11, 'Low Frequency Modulation Configuration' for set up and alignment.
2-16
Transmitter Main Board Instruction Manual
3
TRANSMITTER ALIGNMENT
3.1
General
Transmitter alignment is simplified by using an M-3 Subrack, SM-3 System Monitor, and RF
extender cable to provide transmitter power and signal interconnection. Alternatively, +9.5 Vdc and
+13.8 Vdc may be applied directly to a transmitter module through positive connection for the
+9.5 Vdc to pins B6 and Z6, for the +13.8 Vdc to pins B2 and Z2, and negative connection to pins
B30, Z30, B32, and Z32. Transmitter balanced audio (600 Ω) is available at pins B18 and Z18.
3.2
Repair Note
MT-3 Transmitter modules are mainly made up of surface mount devices which should not be
removed or replaced using an ordinary soldering iron. Removal and replacement of surface mount
components should be performed only with specifically designed surface mount rework and repair
stations complete with ElectroStatic Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place of
manual vacuum type desoldering tools when removing jumpers. This will help prevent damage to
the circuitboards.
3.3
Printed Circuitboard Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuitboard (PCB) numbering convention in which the last two digits of the circuitboard
number represent the circuitboard version. For example:
• PCB number 43-912010 indicates circuitboard version 1.0;
• PCB number 50002-02 indicates circuitboard version 2.0.
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
3.4
Recommended Test Equipment List
Alignment of the complete transmitter requires the following test equipment or its equivalent. It is
assumed that any adjustment of the Transmitter Main Board will also involve the other modules.
Dual Power Supply:
Oscilloscope / Multimeter:
Current Meter:
Regulated +9.5 Vdc at 2 A.
Regulated +13.8 Vdc at 2 A - Topward TPS-4000
Fluke 97 Scopemeter
Fluke 75 multimeter
Transmitter Main Board Instruction Manual
3-1
Radio communications test set :
VSWR 3:1 mismatch load:
Alignment Tool:
Marconi Instruments 2955R
JFW 50T-035-3.0:1
Johanson 4192
It is recommended that the radio communications test set be frequency locked to an external
reference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set to
within its ±1 ppm frequency tolerance.
3.5
Standard Factory Settings and Jumper Configuration
Standard factory settings and the associated jumper configuration for each module of the MT-3
series transmitter are given below.
3.5.1 MT-3 Transmitter Board Factory Configuration
The MT-3 Transmitter Main Board is factory configured as follows:
• Transmitter standby mode 1 (lowest standby current consumption).
• Receiver squelched, de-emphasized audio amplifier disabled.
• Optional relay not installed.
• Separate amplifier power sense outputs.
The corresponding jumper settings are:
• Jumper J2:
'x' position
• Jumper J3:
no connection
• Jumper J4:
'y' position
• Jumper J6:
not installed
• Jumper J7:
'y' position
• Jumper J9:
not installed
• Jumper J12:
not installed
• Jumper J13:
'x' position
• Jumper J14:
'x' position
• Jumper J15:
'x' position
• Jumper J16:
'x' position
• Jumper J17:
installed
• Jumper J18:
'y' position
• Jumper J19:
'x' position
• Jumper J20:
'x' position
• Jumper J21:
not installed
• Jumper J22:
'x' position
• Jumper J23:
'x' position
• Jumper J24:
installed
• Jumper J25:
'x' position
3-2
Optional relay configuration
Optional relay configuration
Optional relay configuration
Transmitter standby mode select - Mode 1
Audio processor standby mode select
Receiver audio ac/dc input coupling
Amplifier power sense output configuration
Amplifier power sense output configuration
Amplifier power sense output configuration
Amplifier power sense output configuration
Microphone configuration
Microphone output line
Synthesizer or crystal module standby mode select
600Ω audio transformer enable. 'y' position disables
600Ω audio transformer enable. 'y' position disables
+8 Vdc audio processor supply bypass
600Ω audio transformer enable. 'y' position disables
600Ω audio transformer enable. 'y' position disables
Subtone #2 output enable
Audio output enable
Transmitter Main Board Instruction Manual
• Jumper J26:
• Jumper J27:
• Jumper J28:
• Jumper J29:
• Jumper J31:
• Jumper J32:
• Jumper J33:
• Jumper J34:
• Jumper J35:
installed
not installed
not installed
installed
installed
not installed
installed
installed
installed
Time-Out-Timer Timing resistor select.
Time-Out-Timer Timing resistor select.
Time-Out-Timer Timing period output select.
Time-Out-Timer Timing period output select.
Time-Out-Timer Timing period output select.
Time-Out-Timer Timing period output select.
Time-Out-Timer input enable
Time-Out-Timer power enable
Time-Out-Timer output enable
Note: Jumpers J1, J5, J8, J10, J11 designations not used
3.5.2 MT-3 Audio Processor Factory Configuration (Version 1.6)
The MT-3 Audio Processor is factory configured as follows:
• Maximum Deviation:
±2.5 kHz (12.5 kHz or 15 kHz channel),
±5.0 kHz (25 kHz or 30 kHz channel).
• Microphone Input:
1 kHz signal at -10 dBm gives ±50% maximum deviation,
1 kHz signal compression set at ±60% maximum deviation.
• Audio Balanced Input:
Enabled - pre-emphasis response,
1 kHz tone at -8 dBm gives ±60% maximum deviation.
1 kHz signal compression set at ±60% maximum deviation.
• Subtone Input 1:
100 Hz tone at -18 dBm gives ±500 Hz deviation.
• All other audio inputs:Disabled.
• Time-Out-Timer:
5 minutes ± 30 seconds.
The corresponding Audio Processor jumper settings are:
• Jumper JU1: not installed Power source select for Direct Modulation circuits.
• Jumper JU2: not installed MT-2 deviation enable (MT-2 transmitters).
• Jumper JU3: installed
Microphone preamplifier power enable.
• Jumper JU4: installed
Balanced audio preamplifier power enable.
• Jumper JU5: not installed Balanced audio ground enable.
• Jumper JU6: installed
Processed audio path enable (limited and filtered).
• Jumper JU7: not installed Unprocessed auxiliary audio path enable (unfiltered).
• Jumper JU8: not installed Audio output DC coupled (MT-2 transmitters).
• Jumper JU9: installed
Balanced input preemphasis response enable.
• Jumper JU10: not installed Balanced input flat audio response enable.
Transmitter Main Board Instruction Manual
3-3
• Jumper JU11: not installed
• Jumper JU12: not installed
• Jumper JU13: not installed
• Jumper JU14: not installed
• Jumper JU15: not installed
• Jumper JU16: not installed
• Jumper JU17: installed
• Jumper JU18: not installed
• Jumper JU19: 'y'position
• Jumper JU20 to JU22:
• Jumper JU23: not installed
• Jumper JU24: installed
• Jumper JU25: installed
• Jumper JU26: installed
• Jumper JU27: not installed
• Jumper JU28: not installed
• Jumper JU29: not installed
• Jumper JU30: not installed
• Jumper JU31: not installed
• Jumper JU32: not installed
• Jumper JU33: not installed
• Jumper JU34: not installed
• Jumper JU35: not installed
• Jumper JU36: 'x' position
• Jumper JU37: not installed
• Jumper JU38: not installed
• Jumper JU39: not installed
Balanced input to auxiliary audio circuit enable.
Tone/Digital input to auxiliary audio circuit enable.
Direct modulation input to auxiliary audio circuit enable.
Auxiliary input preemphasis response enable.
Auxiliary input flat audio response enable.
Subtone input 2 audio path select.
MT-2 Temperature compensation bypass.
Continuous data mode selection.
Power source for audio switches.
not used
Direct modulation input to subtone 2 enable.
Lowpass filter response select.
Lowpass filter response select.
Lowpass filter response select.
Direct Modulation input audio path select.
Amplified direct modulation bypass.
Amplified direct modulation input DC couple enable.
Amplified direct modulation audio path select.
Subtone 2, AC coupled,to direct modulation output enable.
Audio output AC coupled (MT-3 crystal transmitters).
Audio output AC coupled (MT-3 synthesized transmitters).
Audio output from Direct Modulation circuits select.
Direct Modulation output source select.
Subtone input 1 audio path select.
Summed Subtone audio to direct modulation output enable
Subtone 2, DC coupled, to direct modulation output select.
Direct Modulation low input impedance enable.
3.6 MT-3 Transmitter Board Alignment
invisible text
3.6.1 General
Before proceeding with the transmitter alignment, check that the appropriate jumpers are installed.
The standard jumper configuration for the Transmitter Main Board, given in section 3.5.1, is
normally employed for transmitter alignment. In a standard configuration, the only alignment
required on the MT-3 Transmitter Main Board for a synthesized transmitter is to set the frequency
switches (FSW1, FSW2, FSW3, and FSW4) for the desired channel frequency. FSW1 is the
most significant digit of the frequency switches. The switch settings for the desired channel
frequency can be found in the channel designation tables. If the transmitter is using a crystal
control oscillator module, the switch settings are irrelevant.
3-4
Transmitter Main Board Instruction Manual
3.6.2 MT-3 Transmitter Board Test Points
TP1: squelched, de-emphasized audio / +13.8 Vdc
TP2: microphone audio
TP3: microphone PTT WTO; inactive +9.5 Vdc, active 0 Vdc
TP4: microphone PTT NTO; inactive +9.5 Vdc, active 0 Vdc
TP5: +9.5 Vdc from backplane connector
TP6: +9.5 Vdc from front panel board
TP7: +9.5 Vdc Switched
TP8: Qualified PTT; inactive +9.5 Vdc, active 0 Vdc: activated by synthesizer
TP9: synthesizer enable; selected by J18
TP10: synthesizer bootstrap line; +5 Vdc
TP11: synthesizer PTT input; inactive +9.5 Vdc, active 0 Vdc
TP12: audio processor TOT input; inactive +9.5 Vdc, active 0 Vdc
TP13: audio processor TOT output; inactive +9.5 Vdc, active 0 Vdc
TP14: audio processor audio output
TP15: audio processor audio control line
TP16: audio processor subtone #2 output
TP17: audio processor direct modulation input
TP18: audio processor subtone #2 input
TP19: audio processor continuous +9.5 Vdc
TP20: audio processor subtone #1 input
TP21: audio processor supply +8 Vdc, selected by J7
TP22: audio processor tone/digital input
TP23: synthesizer receive data line; 0 Vdc
TP24: synthesizer transmit data line; +5 Vdc
TP25: Q1 collector; inactive 0 Vdc, active +9.5 Vdc
TP26: U2d output; inactive +9.5 Vdc, active 0 Vdc
TP27: U1a output (PTT WTO); inactive +9.5 Vdc, active 0 Vdc
TP28: U1b output (PTT NTO); inactive +9.5 Vdc, active 0 Vdc
TP29: Q6 collector / Q7 gate; inactive +9.5 Vdc, active 0 Vdc
TP30: +9.5 Vdc PTT Switched
TP31: U8 pin 1, Time-Out-Timer circuitry set input
TP32: U8 pin 2, Time-Out-Timer circuitry reset input
TP33: Audio processor balanced audio input
TP34: Audio processor balanced audio input
3.7
Module Installation and Removal
Installation of the Enhanced Synthesizer or Crystal Controlled Oscillator module is facilitated by
alignment pins on each corner of the module. When the four pins are aligned with their
corresponding hole in the Transmitter Main Board, push the module down, taking care to ensure the
connector pins on the bottom of the Synthesizer or Crystal Controlled Oscillator module are not
bent.
Transmitter Main Board Instruction Manual
3-5
To remove the Enhanced Synthesizer or Crystal Controlled Oscillator module, simply remove the
center screw from the module lid and pull the module out. The module should be pulled straight
out so that the four alignment pins do not bend or damage the circuitboard.
The Low Power Synthesizer uses two tabs soldered to the Transmitter Main Board for mounting.
No alignment pins are used. As a result care must be taken to ensure the connector pins on the
bottom of the Synthesizer are not bent. To install the low Power Synthesizer module, remove the
two of the synthesizer side screws that correspond to the tabs on the Transmitter Main board and
install the synthesizer module taking care not to bend the pins. Replace the two side screws;
installing them through the tabs to hold the synthesizer module in place.
When removing the Low Power Synthesizer module, it is important to gently lift the synthesizer
module "straight out" in order to prevent damage to the connector pins. Remove the two side
screws holding the sinthesizer module to the tabs. Using a plastic coated lifting tool, such as a
small screwdriver with the tip covered in heat shrink material, gently lift the synthesizer module
from the Transmitter Main Board by applying pressure in a rotating fashion about four corners of
the synthesizer module. Replace the two side screws.
3.8 MT-3 Audio Processor Alignment (Version 1.6)
invisible text
3.8.1 General
Verify the standard factory settings for the MT-3 Audio Processor as given in section 3.5.2 before
beginning the standard deviation adjustment procedure. If the transmitter's channel frequency
changes, the audio processor should be realigned to optimize the transmitter's performance. The
schematic diagram for the audio processor is shown in section 5.4.2 and the component layout is
shown in section 5.4.1.
3.8.2 MT-3 Audio Processor Standard Deviation Adjustment
Note: clockwise rotation of controls increases signal levels.
Connect the transmitter to the radio communications test set and monitor FM
deviation, distortion, and audio frequency. Before adjusting the audio deviation,
confirm that the transmitter RF output frequency is correct.
Connect the 600 ohm input to the incoming audio (pins B18, Z18). Set the audio
frequency to 1 kHz at the desired level of -8 dBm.
Increase the balance level control (R31) for maximum gain.
3-6
Transmitter Main Board Instruction Manual
4
Turn the transmitter on.
Adjust the balance compression level (R38) for compression at ±60% maximum
deviation.
Set the audio frequency to 2.4 kHz, then adjust the deviation control (R29) for
maximum deviation.
Reset the modulating frequency to 1 kHz and re-adjust R38 for ±60% maximum
deviation.
Repeat steps 6 and 7 until both conditions are met.
Vary the audio signal from 1 kHz to 3 kHz and measure the positive deviation and
then the negative deviation. Adjust the symmetry control (R14) until the ± deviation is
symmetrical. The variation between ± deviation levels should not exceed 300 Hz over
the 1 kHz to 3 kHz range.
10
Repeat steps 6 and 7 and re-adjust if necessary.
11
Adjust the balanced input level control (R31) until the deviation produced by a 1 kHz
tone at -8 dBm falls below ±60% maximum deviation, then adjust R31 so that the
deviation increases until compression is observed. The deviation should be ±1.5 kHz
or ±3 kHz for narrowband and wideband channels respectively.
12
A 1 kHz tone at -8 dBm input level should produce ±60% maximum deviation. If not,
go back to step 4 and make sure the pot is set for maximum gain and repeat the
procedure. If so, increasing the input level by +20 dBm should not increase the
deviation. This confirms that the AGC action of preamplifier U2 is working.
13
A 2.4 kHz tone at the desired audio input level should produce the maximum
deviation. Increasing the input level by +20 dBm should not increase the deviation.
This confirms that the limiting action of U4a and U5a is working.
14
Set the audio frequency back to 1 kHz at -8 dBm output. Confirm and record audio
distortion with the appropriate filter on the communications test set.
15
Confirm the audio frequency response by referencing all output deviation
measurements to a 1 kHz input tone at ±20% maximum deviation (±500 Hz for
narrowband or ±1 kHz for wideband).
16
Remove the signal to the balanced input (pins B18, Z18).
Transmitter Main Board Instruction Manual
3-7
17
Apply a 1 kHz tone at -8 dBm to the microphone audio input. Set the microphone
compression control (R8) to produce ±60% maximum deviation. Reduce the signal
to -10 dBm and adjust the microphone input level control (R2) for ±50% maximum
deviation. Remove the signal.
18.
Apply a 100 Hz tone at -18 dBm to the subtone 1 input and adjust the subtone 1 level
control (R42) to produce ±500 Hz deviation. Remove the signal.
3.9
Standard Factory Settings and Jumper Configuration
Standard factory settings and the associated jumper configuration for the MT-3 Audio Processor
(Version 1.8) are given below.
3.9.1 MT-3 Audio Processor Factory Configuration (Version 1.8)
The MT-3 Audio Processor is factory configured as follows:
• Maximum Deviation:
±2.5 kHz (12.5 kHz or 15 kHz channel),
±5.0 kHz (25 kHz or 30 kHz channel).
• Microphone Input:
1 kHz signal at -10 dBm gives ±50% maximum deviation,
1 kHz signal compression set at ±60% maximum deviation.
• Audio Balanced Input:
Enabled - pre-emphasis response,
1 kHz tone at -8 dBm gives ±60% maximum deviation.
1 kHz signal compression set at ±60% maximum deviation.
• Subtone Input 1:
100 Hz tone at -18 dBm gives ±500 Hz deviation.
• All other audio inputs:Disabled.
• Time-Out-Timer:
5 minutes ± 30 seconds.
The corresponding Audio Processor jumper settings are:
• Jumper JU1: not installed Power source select for Direct Modulation circuits.
• Jumper JU2: not installed MT-2 deviation enable (MT-2 transmitters).
• Jumper JU3: 'y' position
Microphone preamplifier flat response.
• Jumper JU4: not installed Subtone input 2 audio path select.
• Jumper JU5: not installed Auxiliary input enable (DC or AC coupled).
• Jumper JU6: installed
Processed audio path enable (limited and filtered).
• Jumper JU7: not installed Unprocessed auxiliary audio path enable (unfiltered).
• Jumper JU8: not installed Audio output DC coupled (MT-2 transmitters).
• Jumper JU9: installed
Balanced input preemphasis response enable.
3-8
Transmitter Main Board Instruction Manual
• Jumper JU10:
• Jumper JU11:
• Jumper JU12:
• Jumper JU13:
• Jumper JU14:
• Jumper JU15:
• Jumper JU16:
• Jumper JU17:
• Jumper JU18:
• Jumper JU19:
• Jumper JU20:
• Jumper JU21:
• Jumper JU22:
• Jumper JU23:
• Jumper JU24:
• Jumper JU25:
• Jumper JU26:
• Jumper JU27:
• Jumper JU28:
• Jumper JU29:
• Jumper JU30:
• Jumper JU31:
• Jumper JU32:
• Jumper JU33:
• Jumper JU34:
• Jumper JU35:
• Jumper JU36:
• Jumper JU37:
• Jumper JU38:
• Jumper JU39:
• Jumper JU40:
• Jumper JU41:
• Jumper JU42:
• Jumper JU43:
not installed
'y' position
not installed
not installed
not installed
not installed
installed
not installed
not installed
not installed
not installed
not installed
'x' position
not installed
installed
installed
installed
not installed
not installed
not installed
not installed
not installed
not installed
installed
not installed
not installed
'y' position
not installed
not installed
not installed
installed
not installed
installed
Balanced input flat audio response enable.
Balanced input to auxiliary audio circuit enable.
Tone/Digital input to auxiliary audio circuit enable.
Direct modulation input to auxiliary audio circuit enable.
Auxiliary input preemphasis response enable.
Auxiliary input flat audio response enable.
Subtone input 1 audio path select.
MT-2 Temperature compensation bypass.
Continuous data mode selection.
Power source for audio switches.
Power source for Q2.
Power source for bilateral switch U9.
Audio output to lowpass filter
Direct modulation input to subtone 2 enable.
Lowpass filter response select.
Lowpass filter response select.
Lowpass filter response select.
Direct modulation input audio path select.
Amplified direct modulation bypass.
Amplified direct modulation input DC coupled enable.
Amplified direct modulation audio path select.
Audio output AC coupled (MT-3 synthesized transmitters)
Audio output AC coupled (MT-3 crystal transmitters).
Audio ouput AC coupled.
Audio output from direct modulation circuits select.
Direct Modulation output source select.
Power source select for AGC Preamplifier.
Direct modulation output enable.
Subtone 2, DC coupled, to direct modulation output select.
Direct modulation low input impedance enable.
Power for Microphone preamplifier enable.
not used.
Processed audio path to dircet modulation output.
Bilateral switch U9 bypass enable.
Transmitter Main Board Instruction Manual
3-9
3.10 MT-3 Audio Processor Alignment (Version 1.8)
invisible text
3.10.1General
Verify the standard factory settings for the MT-3 Audio Processor as given in section 3.9.1 before
beginning the standard deviation adjustment procedure. If the transmitter's channel frequency
changes, the audio processor should be realigned to optimize the transmitter's performance. The
schematic diagram for the audio processor is shown in section 5.5.2 and the component layout is
shown in section 5.5.1.
3.10.2MT-3 Audio Processor Standard Deviation Adjustment
Note: clockwise rotation of controls increases signal levels.
Connect the transmitter to the radio communications test set and monitor FM
deviation, distortion, and audio frequency. Before adjusting the audio deviation,
confirm that the transmitter RF output frequency is correct.
Connect the 600 ohm input to the incoming audio (pins B18, Z18). Set the audio
frequency to 1 kHz at the desired level of -8 dBm.
Increase the balance level control (R31) so that the deviation increases until
compression is observed.
Adjust the compression control pot (R38) for compression at ±60% maximum
deviation.
Set the audio frequency to 2.4 kHz, then adjust the deviation control (R29) for
maximum deviation.
Reset the modulating frequency to 1 kHz and re-adjust R38 for ±60% maximum
deviation.
Repeat steps 4 and 6 until both conditions are met.
Vary the audio signal from 1 kHz to 3 kHz and measure the positive deviation and
then the negative deviation. Adjust the symmetry control (R14) until the ± deviation is
symmetrical. The variation between ± deviation levels should not exceed 300 Hz over
the 1 kHz to 3 kHz range.
Repeat steps 4 and 6 and re-adjust if necessary.
3-10
Transmitter Main Board Instruction Manual
10
Adjust the balanced input level control (R31) so that the deviation increases until
compression is observed. The deviation should be ±1.5 kHz or ±3 kHz for
narrowband and wideband channels respectively.
11
Increase the input level (R31) by +20 dBm, it should not increase the deviation more
than maximum. This confirms that the AGC action of preamplifier U1 is working.
12
A 2.4 kHz tone at the desired audio input level should produce the maximum
deviation. Increasing the input level by +20 dBm should not increase the deviation.
This confirms that the limiting action of U4a and U5a is working.
13
Set the audio frequency back to 1 kHz at -8 dBm output. Confirm and record audio
distortion with the appropriate filter on the communications test set.
14
Confirm the audio frequency response by referencing all output deviation
measurements to a 1 kHz input tone at ±20% maximum deviation (±500 Hz for
narrowband or ±1 kHz for wideband). Remove the signal to the balanced input (pins
B18, Z18).
15
Apply a 1 kHz tone at -8 dBm to the microphone audio input. Set the microphone
compression control (R2) to produce ±50% maximum deviation. Reduce the signal
to -10 dBm and adjust the microphone input level control (R2) for ±50% maximum
deviation. Remove the signal.
16.
Apply a 100 Hz tone at -18 dBm to the subtone 1 input and adjust the subtone 1 level
control (R42) to produce ±500 Hz deviation. Remove the signal.
3.11 Low Frequency Modulation Configuration
Note: the following information originates from Daniels Electronics document number A0361-06.
3.11.1MT-3 Transmitters
For transmitters, the LTR™ or DCS signal should be applied to the DIRECT MODULATION
input (pin Z28), which is also available on the M-3 and SR-3 motherboards at the control
connectors J1, P1, or J7 on pins B20 (TX A DIR MOD) and A20 (TX B DIR MOD). The signal
from an LTR™ or DCS encoder should be applied through a 47k resistor to reduce the
loading effect of the DIRECT MODULATION input. The signal should be capacitively
coupled to avoid pulling the transmitter frequency off centre. Most LTR™ and DCS encoder
modules already have a capacitive output. Note that the controller generating the low frequency
signal will need to key the transmitter's PTT input. Note that the synthesizer and the audio
processor may require modifications as described later in this document.
Transmitter Main Board Instruction Manual
3-11
MT-3 Transmitter (board version 43-920910 through 43-920911)
• J6 installed (synthesizer always powered up by +9.5V SWITCHED line).
• J7 installed in 'X' position (audio processor always powered up by +9.5VSWITCHED
line).
• solder a wire from JA4-2 of main board to J51-18 of synthesizer. This connects the
subtone output 2 to the synthesizer's phase modulation input.
MT-3 Transmitter (board version 43-920912 through 43-920913)
• J6 installed (synthesizer always powered up by +9.5V SWITCHED line).
• J7 installed in 'X' position (audio processor always powered up by +9.5VSWITCHED
line).
MT-3 Transmitter (board version 43-920914 or higher)
• J6 installed (+9.5V SWITCHED line always powered).
• J7 installed in 'X' position. (audio processor always powered up by +9.5VSWITCHED
line).
• J18 installed in the ''X' position (synthesizer always powered up by +9.5VSWITCHED
line).
LTR™ is a Trademark of E.F. Johnson Company.
3.11.2MT-3 Transmitter Audio Processors
MT-3 Transmitter Audio Processor (board version 43-911910 through 43-911913)
• Remove R47 to avoid having too low an input impedance.
• Change C40 to a 10 uF tantalum capacitor (stock code 1054-6E106M25) with the "+"
polarity mark nearest to the edge of the PCB (see figure 3-1). This allows low
frequencies to pass.
• Short pins P4-1 and P4-3 (or install J23) together with a short piece of 22 or 24 gauge
solid wire and solder (see diagram below). This allows the DIRECT MODULATION
3-12
Transmitter Main Board Instruction Manual
input to the transmitter to be used to gain access to the SUBTONE INPUT 2 which
connects to the PHASE MOD IN input of a modified synthesizer.
• Make sure J13 and J16 are not installed.
Figure 3-1
Transmitter Audio Processor Low Frequency Modulation.
SHORT TOP TWO PINS
REMOVE
R47
REPLACE WITH
10 uF
MT3TXMNM7
MT-3 Transmitter Audio Processor (board version 43-911914 through 43-911916)
• Install jumpers: JU38Y, JU35Y
• Remove jumpers: JU27X, JU27Y, JU31, JU35X, JU37, JU38X
• Short pins P4-1 and P4-3 (or install J23) together with a short piece of 22 or 24 gauge
solid wire and solder (see figure 3-1). This allows the DIRECT MODULATION input
to the transmitter to be used to gain access to the SUBTONE INPUT 2 which connects to
the PHASE MOD IN input of a modified synthesizer.
Note that the SUBTONE 2 input should not be used while this modification is in effect. Note also
that adjusting R44 has no effect on the deviation of the low frequency signal.
MT-3 Transmitter Audio Processor (board version 43-911918)
• Contact factory for configuration.
3.11.3Synthesizer and Crystal Controlled Oscillator
Refer to the manual for the Oscillator used in your Transmitter for the required Low Frequency
Modulation modifications.
Transmitter Main Board Instruction Manual
3-13
3.11.4Tuning the Transmitter
For all MT-3 transmitters, apply a low impedance source of 20-300 Hz to the Direct Modulation
input of the transmitter (Pin Z28 of the 48 pin connector) through a 22 uF capacitor, positive
terminal connected to pin Z28. A Marconi 2955 works well for this test. Adjust R44 on the audio
processor to the fully clockwise position.
• Apply a 100 Hz tone at -8 dBm to the Direct Modulation input of the transmitter (Pin Z28
of the 48 pin connector, and key the transmitter. Adjust the level of the tone until a
deviation of 1.5 kHz is acheived. Note that the level required may be anwhere from -10
dBm to 0 dBm depending on the type of transmitter.
• Confirm that the frequency response rolls off by checking that the following deviations
are observed: (note that the deviation will NOT roll off at 300 Hz if an OC-3 crystal
oscillator is used instead of a synthesizer).
- 20 Hz tone gives about 700 Hz deviation
- 100 Hz tone gives 1.5 kHz deviation
- 300 Hz tone gives about 500 Hz deviation
• Finally, confirm subtone 1 modulation: set-up for 100 Hz Mod with 500 Hz Dev.
- Check 200 Hz Mod, Dev =
- Check 300 Hz Mod, Dev =
3-14
1.5 (VHF) / 2.0 kHz (UHF)
1.5 (VHF) / 4.0 kHz (UHF)
Transmitter Main Board Instruction Manual
4
TRANSMITTER INTERCONNECT PIN DEFINITIONS
The MT-3 series Transmitter employs a 48 pin Eurostandard connector for interfacing to all
transmitter power, audio, and control functions. The following are the MT-3 series Transmitter
backplane connections to the M-3 Motherboard.
Pin
Name
Pin Name
Pin Name
D2
D4
D6
D8
D10
D12
D14
D16
D18
D20
D22
D24
D26
D28
D30
D32
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect (IMC1)
No Connect (IMC2)
No Connect (IMC3)
Channel Select 0 (LSB)
Channel Select 1
Channel Select 2
Channel Select 3 (MSB)
Synth Tx Data (Output)
Synth Rx Data (Input)
Synth Bootstrap (Input)
B2
B4
B6
B8
B10
B12
B14
B16
B18
B20
B22
B24
B26
B28
B30
B32
Z2
Z4
Z6
Z8
Z10
Z12
Z14
Z16
Z18
Z20
Z22
Z24
Z26
Z28
Z30
Z32
+13.8 Vdc
MIC Out
+9.5 Vdc
Relay Positive
PTT WTO
Tx Standby
PTT NTO
No Connect (MT-2 +9.5V)
Balanced Input 2
Squelched,De-emph Audio
Subtone Input 1
PTT Output
Forward Power Sense
Monitor Out
Ground
Ground
Transmitter Main Board Instruction Manual
+13.8 Vdc
MIC In
+9.5 Vdc
Relay Negative
PTT WTO
Tx Standby
PTT NTO
No Connect (MT-2 +9.5V)
Balanced Input 1
Squelched, Flat Audio
Tx Audio Control
Subtone Input 2
Reverse Power Sense
Direct Mod Input
Ground
Ground
4-1
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4-2
Transmitter Main Board Instruction Manual
LSB
MSB
5.1
6 5 4
6 5 4
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
Transmitter Block Diagram
0 1
6 5 4
0 1
6 5 4
0 1
0 1
BACKPLANE
CONNECTOR
MT-3 FRONT PANEL BOARD
B2
FUSE
(OPTIONAL)
+9.5V
B6
10-17 VOLTS
+ 13.8 VDC NOMINAL
+13.8VDC
+9.5 VDC CONTINUOUS
Z2
+9.5 VDC
RX AUDIO / +13.8V
Z6
+9.5V OUTPUT
J9
+9.5VDC
MIC AUDIO
SQL DE-EMP INPUT
B20
LED ENA
REFERENCE
INPUT
MIC PTT NTO
+9.5 VDC
OS-3 SYNTHESIZER MODULE
B30
GROUND
B32
GROUND
Z30
GROUND
Z32
GROUND
D30
RX DATA IN
MIC PTT WTO
GROUND
RF OUT
J17
MIC OUT
B4
MT-3 AUDIO
PROCESSOR
J16
MIC IN
BALANCED INPUT
SIDE 2
Z4
SUBTONE #2 OUTPUT
AM(N/C)
MICROPHONE
INPUT
B18
D32 BOOTSTRAP
PTT
BALANCED INPUT
Z18
J20
J25
J23
T1
600Ω
SUBTONE
INPUT #1
D20 CHANNEL SEL 0 (LSB)
SUBTONE #1 INPUT
AM(N/C)
B22
D22 CHANNEL SEL 1
+ 9.5 VDC PTT
SWITCHED
D24 CHANNEL SEL 2
SUBTONE
INPUT #2
Z24
SQL FLAT
INPUT
Z20
DIRECT MOD
INPUT
Z28
+9.5VDC
+9.5VDC
+ 9.5 VDC PTT
SWITCHED
B12
J2
Z12
COMMON 2
D10
D26 CHANNEL SEL 3 (MSB)
Z22
+ 9.5 VDC
SWITCHED
PTT WTO
TRIGGER
J7
PTT OUTPUT
+9.5V
8 VDC
SUPPLY
ENA
+8.0V SWITCHED
MT-3 VHF/UHF AMPLIFIER MODULE
RF IN
RF OUT
J3
1 U2a
FRONT PANEL
N CONNECTOR
TOT INPUT
J1
TX AUDIO CONTROL
LED ENA
DIRECT MODULATION INPUT
AM(N/C)
B10
D12
J18
TONE/DIGITAL INPUT
AM(N/C)
AUDIO CONTROL
AM(N/C)
Z10
NO2
+ 9.5 VDC
SWITCHED
SUBTONE #2 INPUT
AM(N/C)
PTT WTO
TX
STANDBY
AUDIO OUTPUT
J22
J19
600 OHMS
BALANCED INPUT
SIDE 1
D28 TX DATA OUT
OR
TOT OUTPUT
+13.8V
NC2
D8
RLY POS
B8
GND
+9.5V
FOR
JP1-2
JP1-7
J35
J33
U2c
TOT INPUT
RLY NEG
D2
NC 1
D6
TIME OUT TIMER
COMMON 1
D4
12
PTT TRIGGER
DANIELS
PTT
+9.5VDC
TX STANDBY
Z14
B24
11
B14
PTT NTO
PTT OUTPUT
13 U2d
PTT OUTPUT
SWITCHING
CIRCUITRY
Z26
VSWR REVERSE
J12
+9.5 VDC PTT SWITCHED
J4
J15
TOT OUTPUT
10
RELAY1
Z8
NC 2
J13
+9.5 VDC
10
REV
B26
R25
27K4
J14
R26
1K0
FORWARD POWER FAIL
INDICATOR
Q10
PZT2222A
+ 9.5 VDC PTT SWITCHED
+ 9.5 VDC SWITCHED
MT3TXMNM1D
TM
ELECTRONICS LTD.
MT-3 AM Transmitter Main Board Instruction Manual
5-1
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DANIELS
DEELECTRONICS
5-2
Transmitter Main Board Instruction Manual
MT-3 AM Transmitter Board Component Layout (Top)
R42
OPT
J28
J29
J31
J32
J34
J26
J27
5.2.1
J35
MT-3 AM Transmitter Board Electrical Assembly
J33
5.2
ENA
+9.5V
13.8V
FOR
REV
GND
JS3
1ROW X 2PIN
FSW4
BCD-10
28
OS-3H ENHANCED SYNTHESIZER
OC-3 CRYSTAL CONTROL MODULE
JS1
19 11
18 10
FSW2
BCD-10
SYNTHESIZER TP30
GROUND TAB
(Low Power
TP29
Synthesizer
Only)
1R0W X 12PIN
17 9
TP9
TP10
TP4
15 7
14 6
FSW1
BCD-10
13 5
12B 4
OS-3 RF
OUTPUT
TP28
T1
TP25
TP11
TP5
TP27
10
SPT-196
TP6
JA3
14
12
JA2
JA4
TP7
JA5
TP26
JA1
1 3
2 4
MT-3 AUDIO PROCESSOR BOARD
TP12
43-920917
18
MSD
16
1ROW X 6PIN
TP3
JF2
MT-3 FRONT PANEL BOARD
JF1
JF3
TP8
JS2
22
20
16 8
TP2
26
24
TP23
TP24
20 12
1ROW X 9PIN
FSW3
BCD-10
C23
100nF
TP31
OR
TP1
30
LSD
OC-3 RF
OUTPUT
TP32
OST-3H RF
OUTPUT
AUDIO IN
32
SYNTHESIZER GROUND TAB
(Low Power Synthesizer Only)
TP13
TP15
TP17
TP14
TP16
TP19
TP20
TP33
TP18
TP21
TP22
TP34
RELAY1
OPTIONAL
Factory installed jumpers
- Components Not Installed
DANIELS
DE ELECTRONICS
Illustrations
MT-3
AM Transmitter
and Schematic
MainDiagrams
Board Instruction Manual
DANIELS
MT3TXMNM2B
TITLE:
VICTORIA B.C .
MT-3 Transmitter
Component Component
Side SM Layout
Side T/H
SM Designations
Designations
DATE:
May 9, 1997
BOARD No.:
DWG No:
9209AS3A
9209AS4A
TX3AT9D
DWG REV
REV DATE:
DATE:
ELECTRONICS
43-920917
5-5
5-3
MT-3 AM Transmitter Main Board Component Layout (Bottom)
LPF34
LPF33
J14
LPF32
x J13 y
J12
Q10
PZT
2222
J9
R26
1k00
C2
1µF +
35V
C1
+ 10µF
35V
ORG BLUE
RED
LPF35
R25
27k4
BLK
xx J15
J15 yy
y J25 x
R41
15K
YEL
5.2.2
GND: BLACK
R40
10K
C10
1 µF
LPF31
LPF30
MODULATION INPUT: YELLOW
LPF29
LPF28
U4
MMAD1108
LPF27
LPF26
LPF25
U3
MMAD1108
LPF24
+ 13.8 VDC: RED
C20 +
4.7µF
16V
U8
MC14536B
R39
221K
LPF20
LPF19
CONN1
F/48 MALE
LPF18
LPF17
LPF16
LPF15
LPF14
LPF12
LPF10
LPF8
LPF3
M2.5 x 10
PAN/PHIL.
SCREW (2)
LPF5
LPF4
LPF2
LPF21
C4
1µF
16V
Q9
D15N
06V
Q7
D5P06V
Q5
D5P06V
+ 9.5 VDC: ORANGE
R24
Q6
Q4
68k1 R22 BC817 BC817
J6
D5
68k1
R19
R20 BYD
J6
10k0
68k1
17J
Q8 R23 R21
BC807 10k0 10K0
ENA: BLUE
C6 C5
R16
BYD17J
R7
BC817 10k0
10nF 100nF
D4
Q3
1k00 R8
J4
U1
y J18 x
27k4
D3
33172 R18
R5 BYD R6
RF IN
10k0
10nF C7
y 10R0 17J 27k4
R4
U6
J3 D8
100nF C8
27k4 R15
LP J21
BAS
x x
D2
10k0 2951
16
D7 BYD17J
J19 J22 y
R14
BAS
R29 82k5
10k0
16
y y
J2
Q1
U2
R3
C14
BC817
4081
x R2 27k4 1k00
R30
10nF
15k0 C15 +
R110R0
4.7µF
J17
R9 221k D1
R12
BYD x x
R10 17J
27k4
J20 J23
100k
J16
R28
y y
R11 R13
27k4 27k4
D6
BYD17J
R43
221k
M2.5 PRESS NUT
y J7 x
C3 16V
10µF
R46
221k
C21
100nF
LPF23
LPF22
R45 R44
221k 221k
R35
27k4
R36 R37
221k 1k00
R38
100k
Q11
C22 R47
BC807-25
100nF 1k00
R34
U7
27k4
33172
R32
1k00
MT-3
R33
68k1 R31
221k
AM AMPLIFIER
C12 C13
10nF 10nF
R17
1k00
LPF1
F1
(3A FUSE OPTIONAL)
J24
43-920917
Factory installed jumpers
Components Not Installed
DANIELS
DE ELECTRONICS
5-4
TITLE:
DATE.:
DWG No:
DANIELS
MT3TXMNM3B
VICTORIA B.C .
MT-3 Transmitter Solder Side T/H
SM Layout
Designations
Designations
ELECTRONICS
9 May 1997
BOARD No.:
43-920917
MT-3
AM Transmitter Main
Board Instruction Manual
9209AS3B
9209AS2D
TX3AT8D
DWG REV DATE:
10 Aug. 1998
5.2.3
Transmitter Main Board Schematic Diagram
LPF16
B6
TP6
LPF
TP5
LPF17
Z6
C3
10uF
LPF
MT-3 FRONT PANEL BOARD
C4
1.0uF
6 5 4
MSD 7
JF2-1
TP1
+9.5V INPUT
+9.5V OUTPUT
SPARE
J9
JF1-2
TP2
RX AUDIO
+13.8V
LPF22
SQL DE-EMP
INPUT
B20
FSW2
FSW1
+9.5V CONTINUOUS
LPF
C10
1.0uF
JF1-1
C13
10nF
C12
10nF
MIC AUDIO
GROUND
TP4
TO ALL 9.5V SUPPLY POINTS
JF2-4
JF3-1
9 0 1
13.8V
FSW3
6 5 4
9 0 1
9 0 1
11 13 15 10 12 14 16
6 5 4
15 13 11 9
U3
MMAD1108
JF3-2
FSW4
6 5 4
BACKPLANE
CONNECTOR
3M
2 LSD
9 0 1
16 14 12 10
U4
MMAD1108
B30
GROUND
B32
GROUND
Z30
GROUND
Z32
GROUND
JF3-3
LPF3
JF2-2
RX MON
MIC PTT NTO
LPF
JF3-4
B28
RX MONITOR
TP3
JF1-3
LED ENA
MIC PTT WTO
JF2-3
P1-4
GROUND
B4
Z4
J16
MT-3 AUDIO
PROCESSOR
BALANCED
INPUT #1
Z18
J19
LPF19
B18
LPF
Z24
SQL FLAT
INPUT
Z20
P1-2
JA1-2
R28
NOT INSTALLED
BALANCED
INPUT
TP33
J23
B16
NC
Z16
P3-1
P1-1
P2-1
P2-4
P2-6
P1-18 P1-20 P1-12 P1-19 P1-11 P2-2 P1-17 P1-9
LPF31
9.5V
LPF
TP23
TP18
LPF
J25
TP24
LPF
JA4-1
LPF21
LPF
JA2-1
LPF
9.5V SWITCHED
J7 Y
9.5V PTT SWITCHED
LPF
QUALIFIED PTT
13.8 V
JA5-2
JA4-3
TP19
LPF12
B10
R2
27K4
LPF
Z10
J21
D2
BYD17J
LPF
R16
10K0
DIRECT MODULATION
INPUT
QUALIFIED JA5-3
PTT
J2
D12
NC
+9.5V
Vin
Vout
Error
Sense
Sd
5V Tap
Gnd
FB
LPF
C14
10nF
R30
15K0
D8
NC
B8
R9
221K0
R6
27K4
D3
BYD17J
10 4
R12
27K4
D6
C7
10nF
LPF
D2
J4
NC
C5
100nF
LPF10
Z8
D8
BAS16
R5
10R0
U2c
MC14081
R10
100K0
13
R8
27K4
9.5V
B14
LPF14
Q9
D15N06V
B24
LPF
B12
LPF15
TP13
JA5-4
CHANNEL SEL 3
(Most Significant Bit)
Z22
TX AUDIO CONTROL
FRONT PANEL
N CONNECTOR
RF OUT
OR
9.4Vdc 2
2.2 Vdc
C22 2.9Vdc
100nF
R35
U7b
MC33172 27k4
R37
1k00
TOT 9.5V
TP25
TOT 9.5V
R39
221k
C23
100nF
R40
J26 10k0
2.9 Vdc
R41
J27 15k0
R38
100k
16
15
14
IN1
OSC INH
13
OUT1
DEC
12
OUT2 U8
11
BYP
10
CLK INH
VSS
SET
RESET
VDD
MONO
MC14536B
J28
TOT OUTPUT
R43 R44 R45 R46
221k 221k 221k 221k
J35
R47
1k00
Q11
J29 J31 J32
BC807-25
Q1
BC817-25
U2b
MC14081
14
ENA
JP1-7 JP1-3
JP1-7
+9.5V
JP1-1
GND
JP1-2
FOR
JP1-6
TP30
J13
JP1-5
LPF35
R22
68K1
LPF
R14
10K0
R23
10K0
TO ALL 9.5V PTT SWITCHED
SUPPLY POINTS
Q7
D5P06V
Q6
BC817-25
J12
R25
27K4
TO ALL 13.8V SUPPLY POINTS
R26
1K0
Q10
PZT2222A
LPF1
9.5V
R15
10K0
R19
10K0
R20
68K1
Q4
BC817-25
Q5
TP7
D5P06V
J6
J6
J7
J18
MODE 3
MODE 4
MODE 2
Installed
Installed
Installed
'Y' Position 'X' Position 'X' Position
'X' Position 'Y' Position 'X' Position
C2
1.0uF
TO ALL 9.5V SWITCHED
SUPPLY POINTS
D6
BYD17J
AM/FM STANDBY MODES
MODE 1
Not Installed
B2
LPF
D5
BYD17J
FORWARD POWER
FAIL INDICATOR
TP29
9.5V
B26
VSWR REVERSE
LPF34
J14
Z26
J15
QUALIFIED PTT
9.5V
9.5V
REV
JP1-4
LPF
13.8V
R42
OPT
TP28
AUDIO
IN +13.8V
TO
J25 PIN3
TP11
Q3
BC817-25
R18
PTT
10K0
R21
10K0
LPF
Transmitter Main Board Instruction Manual
D26
JA3-3
DANIELS
DE ELECTRONICS
CHANNEL SEL 2
MT-3 VHF/UHF AMPLIFIER MODULE
GND
Q8
R24
BC807-25
68K1
Z12
D24
XXXX
Z14
LPF26
JA3-2
LPF
TX STANDBY
C8
100nF
9.5V
NC
JA4-4
TP31 TP32
U7a
MC33172
R31
221k R34
27k4
R36
221k
D4
R32
1k00
R33
68k1
U2d
MC14081
U1 b
MC33172
TIME OUT TIMER
TO ALL TOT 9.5V
C21
100nF
11
J34
TOT 9.5V
J33
TOT INPUT
12
9.5V
C20
4.7uF
TP26
C6
10nF
R7
1K0
D4
BYD17J
NC
JA1-4
CHANNEL SEL 1
TP15
TP8
RELAY1
GND
D22
APPROX 0.8 VDC
10
TP12
R13
27K4
U1 a
MC33172
LPF
GND
CHANNEL SEL 0
(Least Significant Bit)
9.5V SWITCHED
LPF
TOT
OUTPUT
LPF8
J18 Y
RF IN
9.5V
R4
27K4
D1
BYD17J
NC
U2a
MC14081
R11
27K4
9.5V
R3
1K0
TOT
JA3-4 INPUT
D20
LPF23
AUDIO
CONTROL
TP27
D10
JA5-1
JA2-3
C15
4.7uF
BOOTSTRAP
LPF29
+8.0V SWITCHED
R29
82K5
U6
LP2951
R1
D7
J3 BAS16 10R0
PTT
D32
LPF28
LPF
JA2-4
TP21
TX DATA OUT
LPF25
13.8V
9.5V PTT SWITCHED
UNDER U6
D28
LPF24
JP1-7
TONE/DIGITAL
INPUT
TP9
LPF33
Z28
TP10
TO
RX DATA IN
LPF32
SUBTONE #2 INPUT
D30
LPF30
JA2-2
LPF
PTT WTO
PTT OUTPUT
NC
P1-10
P3-2
9.5V
PTT NTO
IMC3
LPF27
9.5V
RLY NEG
D18
TP16
J24
SUBTONE #1 INPUT
LPF
TP17
RLY POS
NC
JA1-1
TP20
JA3-1
SUBTONE #2
OUTPUT
JA4-2
TP22
DIRECT MOD
INPUT
IMC2
P1-3
OS-3 SYNTHESIZER
RF
OUTPUT
TP14
AUDIO OUTPUT
T1
AUDIO XFMR
LPF
LPF20
SUBTONE
INPUT #2
IMC1
D16
P2-5
JA1-3
TP34
J20
B22
D14
NC
OR
J22
LPF18
SUBTONE
INPUT #1
NC
P1-14 P1-15 P1-8 P1-16
P2-3
OC-3 CRYSTAL CONTROL MODULE
LPF
MICROPHONE INPUT
BALANCED
INPUT #2
P1-13 P1-6
P1-7
LPF
LPF4
MIC IN
R17
1K0
J17
LPF5
MIC OUT
P1-5
REFERENCE
INPUT
JF1-4
C1
10uF
Q11
R47
T1
TP34
U8
RELAY1
F1
FSW4
STANDARD/LOW FREQUENCY MODULATION
STD MOD VER.
LF MOD VER.
J6
J7
J18
Not Installed
'Y' Position
'Y' Position
Installed
'X' Position
'X' Position
+10 TO +17 VOLTS
+13.8 VDC NOMINAL
LPF2
Z2
LPF
HIGHEST REFERENCE DESIGNATORS
C23
D8
J35
LPF35
UNUSED REFERENCE DESIGNATORS
DESIGN
F1
OPTIONAL
DE
TITLE:
C9,C11,C16
C17-C19
R27
-----
J1,J5,J8
LPF6,LPF7
U5
-----
J10,J11
LPF11,LPF13
Q2
-----
DANIELS
ELECTRONICS
VICTORIA B.C.
MT-3 TRANSMITTER BOARD SCHEMATIC DIAGRAM
DATE: 8 APRIL 1992
DWG No.: MT3TXMNM4B
BOARD No.: 43-920917
DWG BY: MIKE GAUBE
APRVD:
DWG REV DATE: 9 OCTOBER 1998
BOARD REV:
1.7
5-5
5.3
Front Panel Board
5.3.1
Front Panel Board Component Layout
Factory Installed Solder Jumper.
Solder Jumper On Solder Side Of PCB.
J1 X
3 X
MIC
PF1
P1
PF3
SW1
b a
KEYED
2 Y
NORM
J2 3 4
D1
PF2
43-921212
MT3TXMNM5A
DANIELS
DEELECTRONICS
5-6
Transmitter Main Board Instruction Manual
5.3.2
Front Panel Board Schematic Diagram
P1
PF3 -1
PF3 -2
PF3
SPARE
SPARE
+13.8V
RX MON
+13.8V
RX AUDIO
+9.5V OUT
RX MON 4
PF3 -4
MIC PTT 3
MIC INPUT 2
PF3 -3
PF2
PF2-1
PF2-4
+9.5V IN
SW1
F NORM C
+9.5V OUT
KE YED
D1
LED ENA
PF2 -3
MIC PTT NTO
PF2 -2
J1
MIC PTT
PF1
PF1 -3
MIC
J2
MIC PTT WTO
PF1 -2
RX AUDIO
PF1 -1
MIC INPUT
PF1 -4
C1
N/I
DE
TITLE:
DATE.:
DWG No:
DANIELS
ELECTRONICS
M IC-3
M IC-4
M IC-2
M IC-1
VICTORIA B.C .
MT-3 FRONT PANEL BOAR D
DWN:
07 A PRI L 1992
MT3TXMNM6A
BOARD NO.:
43-921212
M. GAUBE
APRVD:
DWG REV DATE: 28 MAY 97
BOARD REV.: 1.2
DANIELS
DEELECTRONICS
Transmitter Main Board Instruction Manual
5-7
5.5
MT-3 Audio Processor Electrical Assembly- PCB No. 43-911916
5.5.1 MT-3 Audio Processor Component Layout
Figure 5-9
MT-3 Audio Processor Component Layout
JU35
JU30
JU38
C58
150pF
JU34
JU32 JU33
R77
20k0
R45
39k2
C17
10nF JU23
JU14
R51
1k50
JU10
JU16
C52
R16
100k
R47
4k53
P4
R43
JU39
11k8
JU18
R40
1k50
JU15
JU6
C19
150pF
R50
221k
JU29
R52
11k8
R41
11k8
R49
27k4
R46
R13 4k53
49k9
R80
68k1
P2 3
R12 C13 R9
11k8 10pF 221k
C3
4.7µF
C53 R22 R21 C20
10nF 49k9 49k9100nF
JU2
R32
1k5
C28 R34
100nF 221k
R88 R27 R28 R89
100k 13k3 13k3 100k
JU25
JU26
R87 R26
22k1 3k48
R4
221k
P1 3
JU24
R24 R23 R84
5k11 5k11 39k2
C6
10nF
R82
27k4
R6
1k00
R1
C5
10nF 604R
C10
C4
JU4 JU3 100nF 2.2µF
R85
39k2
R86 R25
22k1 3k48
C7
10nF
R3
6k81
C33
6.8µF
4.7µF
R17
4k53
R37 R36
20k0 1k00
R33 R83
1k50 27k4
C30
4.7µF
R18 JU17 R20
1k82
1k
C54
JU27
JU11
R39
221k C36 C14 R10 R11 C15 R30
C29
R71 10pF 100nF49k9 49k9 10nF 681R 4.7µF
63k4
R15
JU13 JU12
49k9
JU9
JU7
JU37 R78
49K9
JU31
JU8
P3
R74 4.7µF
27k4
C50
4.7µF
R79
49k9
JU36
C49 C18
10nF 100nF
R61
221k
JU19 JU1
R90
10k
C51
X 100nF
JU28
R73
221k
R72
39k2
JU5
R35 R7 C11 R5
1k00 20k0 150pF 1k00
C34
150pF
INSTALL JUMPERS
R2
5k POT
R8
100k POT
MICROPHONE
INPUT LEVEL
CONTROL
MICROPHONE
COMPRESSION
CONTROL
U1
SL6270
U2
R31
5k POT
R38
100k POT
SL6270
BALANCE
INPUT LEVEL
CONTROL
BALANCED
COMPRESSION
CONTROL
U3
MC33172
R48
100K POT
R14
50k POT
AUXILIARY
INPUT LEVEL
CONTROL
C16
C37
C43
SYMMETRY
ADJUST
R42
5k POT
P5-1
4.7nF 4.7nF 4.7nF
SUBTONE
INPUT 1
CONTROL
LEVEL
R29
50k POT
R75
50k POT
DEVIATION
CONTROL
DC LEVEL
ADJUST
R44
5k POT
SUBTONE
INPUT 2
CONTROL
LEVEL
U8
C55
MC33172
4.7µF
C39
R19
FB1
Ferrite Bead
C8
47µF
C9
C12
100nF
680nF
43-911916
DANIELS
DE ELECTRONICS
5-8
C32
4.7nF
P1
C35
C22
C21
C24
330nF 10nF 10nF 10nF
U5
MC33174
Low Frequency Modulation Configuration
Low Freq.
Low Freq.
Desig
Desig
Not Installed
JU27X
Installed
JU35Y
Not Installed
JU27Y
Not Installed
JU37
Not Installed
JU31
Not Installed
JU38X
Not Installed JU38Y
JU35X
Installed
C26
C25
C23
1nF
15nF 22nF
U4
P7-1
R81
10k
THERM.
C31
47µF
C41
C38
C44
C48
150nF
330nF
330nF
1µF
P2
C27
33nF
P4
Q2
4.7µF TC4S66F
BC817-25
MC33172
U9
C56
330nF
P8-1
P6-1
U10
TC4S66F
C57
C40
C47
1µF
1µF
1µF
P3
MT3APM1A
NOTE: For Low Frequency Modulation
short pins P4-1 and P4-3 together.
TITLE:
TITLE:
DATE:
DANIELS
VICTORIA B.C .
ELECTRONICS LTD.
Value
/ Designation
MT-3
MT-3
Tx Audio
Tx Audio
TX
Audio
Processor
Processor
Processor SM
T/HLayout
Layout
(Standard Version)
19 April, 1996
DWG No:
DWG
No: TX ADPROAS
TXADPROAS
TXADPROAS1A
VUAP3AT1D
TXADPROAS3B
BOARD No.:
43-911916
MT-3 Transmitter Instruction Manual
REV DATE:
DWG
REV
REV DATE:
DATE:
30
22October
August,
2 September
1996
1996
1997
5.4.2
Audio Processor Schematic Diagram V1.6
+8.0V_SWD
Low Frequency Modulation Configuration
Low Freq.
Low Freq.
Desig
Desig
JU27X
Not Installed
Installed
JU35Y
Not Installed
JU27Y
JU37
Not Installed
JU31
Not Installed
Not Installed
JU38X
Not Installed
JU35X
Installed
JU38Y
JU3
C4
100nF
MICROPHONE
AGC PREAMP
R1
604R
MICROPHONE INPUT
LEVEL CONTROL
R2
5k
P1
C6
10nF
R3
6k81
C12
680nF
C9
100nF
U1
SL6270
FB1
C5
10nF
C11
150pF
R5
1k00
C10
+ 2.2uF
R8
100k
+8.0V_SWD
R6
1k00
R9
221k
R10
49k9
R12
11k8
C3 C14
4.7uF 100nF
C7
10nF
C16
4.7nF
R14
50k
R4
221k
C8
47uF
R21
49k9
SYMMETRY
3 ADJUST
NOTE: For Low Frequency Modulation, short pins P4-1
and P4-3 together.
R13
49k9
P11
U3a
MC33172
R15
49k9
C54
4.7uF
C52
4.7uF
R82
27k4
+8.0V_SWD
C13
10pF
MICROPHONE INPUT
+8.0V_SWD
MICROPHONE
COMPRESSION
CONTROL
R7
20k0
C53
10nF
C18
100nF
C17
10nF
NOTE: 400 MHz CTCSS Subtones from an Enhanced
Synthesizer are routed by installing jumpers JU35Y
(remove JU35X), JU36Y (remove JU36X) and JU37.
C20
100nF
R22
49k9
TP1
C15
10nF
R11
49k9
+8.0V_SWD
JU4
R81
10k
C29
4.7uF
P1
R30
681R
BALANCED INPUT
P1
R33
1k50
C35
330nF
R37
20k0
C32
4.7nF
C34
150pF
JU2
R71
63k4
R36
1k00
R34
221k
C31
47uF
P14
R16
100k
PRE-EMPHASIS
R39
221k
C36
10pF
TO_PIN_3_OF_U3
C37
4.7nF
C38
330nF
R40
1k50
JU9
R41
11k8
JU10
R24
5k11
P15
P2
R42
5k
+9.5V_CONTINUOUS
P2
P7
C39
330nF
J2
JU20-JU22
P8
P3
P2
TONE/DIGITAL I/P
AUXILIARY INPUT
JU12
R49
27k4
C41
150nF
C43
4.7nF
R50
221k
R48
100k
R46
4k53
Not Installed if TOT circuitry installed
in Tx Main PCB 43-920917
C44
330nF
R51
1k50
R52
11k8
TO_PIN_3_OF_U4
P4
C23
22nF
R25
3k48
+8.0V_SWD
R74
27k4
R86
22k1
TP2
JU39
C50
4.7uF
R29
50k
C56
4.7uF
U9
TC4S66F
DEVIATION
CONTROL
R61
221k
V offset
R79
49k9
U8b
MC33172
R72
39k2
P4
C57
1.0uF
C40
1.0uF
JU31
P3
JU33
MODULATION
OUTPUT
U10
TC4S66F
JU34
high = voice
low = data
R78
49k9
Tx Audio Control
R44
5k
C55
4.7uF
JU30
C27
33nF
JU32
JU18
R45
39k2
U8a
MC33172
C47
1.0uF
C58
150pF
JU6
P12
JU38
P13
Q2
BC817-25
P4
JU35
R90
10k
JU37
DE
TITLE:
LOW FREQUENCY / DIRECT
MODULATION OUTPUT
DANIELS
ELECTRONICS
VICTORIA B.C.
MT-3 TX AUDIO PROCESSOR SCHEMATIC DIAGRAM
DATE: 19 SEPTEMBER 1991
DANIELS
C26
1.0nF
JU8
R77
20k0
JU16
R73
221k
JU28
R89
100k
+8.0V_SWD
FLAT AUDIO
JU26
U5 d
MC33174
C51
100nF
JU29
R88
100k
C24
10nF
13
C48
1.0uF
R47
4k53
R87
22k1
P10
V offset
JU27
12
14
U5 c
MC33174
JU14
P9
JU25
R28
13k3
JU1
C49
10nF
R27
13k3
10
+9.5V_CONTINUOUS
R75
50k
R26
3k48
C25
15nF
JU23
SUBTONE INPUT 2
P4
-----
JU7
JU15
JU13
U4b
MC33172
DIRECT
MODULATION
INPUT
-----
6 POLE BUTTERWORTH FILTER
C22
10nF
JU19
P5 1
R76
U6-U7
PRE-EMPHASIS
J4
MT-3 TX TIME-OUT-TIMER
J1 1
TP2
R53-R60
U5 b
MC33174
R85
39k2
JU24
JU36
J4
Q1
JU11
P6
R84
39k2
FB1
P8
C1,C2
J3 1
P3
R43
11k8
U10
JU39
JU17
SUBTONE INPUT 1
R90
Q2
UNUSED REFERENCE DESIGNATORS
FLAT AUDIO
U3b
MC33172
C58
R18
681R
C21
10nF
R23
5k11
P2
U5a
MC33174
-----
+8.0V_SWD
HIGHEST REFERENCE DESIGNATORS
11
R20
2k21
C19
150pF
R19
300R
R80
68k1
R38
100k
C33 R35
+ 6.8µF 1k00
R17
4k53
U4a
4 MC33172
R83
27k4
JU5
P3
U2
SL6270
BALANCED
INPUT LEVEL
CONTROL
P1
R32
1k50
C30
4.7uF
R31
5k
BALANCED
AGC PREAMP
BALANCED
COMPRESSION
CONTROL
C28
100nF
DWN BY: MICHAEL GAUBE
DWG No: MT3APM2C
DWG REV DATE:
APRVD:
28 NOVEMBER 1997
BOARD No: 43-911916
BOARD REV:
VERSION 1.6
TM
ELE CTRONICS LTD.
Transmitter Main Board Instruction Manual
5-9
COMPONENT LOCATION TABLE
5.5 Audio Processor Electrical Assembly (Version 1.8)
5.5.1
DES LOC DES LOC DES LOC DES LOC DES LOC
C1 K4 C36 G1 JU7 C1 JU32 A2 R9 B1
C2 I1 C37 P3 JU8 A2 JU33 A2 R10 H1
C3 F1 C38 P4 JU9 D1 JU34 A1 R11 G1
C4 J1 C39 Q3 JU10D1 JU35 A1 R12 D1
C5 J2 C41 P4 JU11H1 JU36 J1 R13 F2
C6 L4 C43 P3 JU12F1 JU37 E1 R14 O3
C7 I1 C44 Q4 JU13F1 JU38 B1 R15 E1
C8 K4 C45 S4 JU14 D1 JU39 C2 R16 D2
C9 I2 C46 T4 JU15D1 JU40 J1 R17 G2
C10 B1 C47 T4 JU16C1 JU42 E1 R18 H2
C11 I1 C48 Q4 JU17H2 JU43 C1 R19 K3
C12 G2 C49 C1 JU18D2 JU44 C2 R20 I2
C15 G1 C50 B2 JU19B2 P1 L4 R21 G1
C17 E1 C51 T3 JU20A1 P2
O4 R22 G1
C18 C1 C52 C2 JU21B2 P3
S4 R23 H2
C20 H1 C53 G1 JU22E2 P4
R4 R24 H2
C21 M4 C54 N3 JU23F1 Q2 T3 R25 H2
C22 M4 C55 T3 JU24 I2 R1 J1 R26 H2
C23 O4 FB1 K3 JU25 G2 R2 K3 R27 F2
C24 M4 JU1 B2 JU26 G2 R3 J2 R28 F2
C25 O4 JU2 F2 JU27 D2 R4 H1 R29 R3
C26 O4 JU3 J1 JU28 A2 R5 I1 R30 H1
C27 R4 JU4 D2 JU29 D2 R6 H1 R31 M3
C30 H1 JU5 E2 JU30 A1 R7 J1 R32 I1
C35 L4 JU6 E1 JU31 A2 R8 C1 R33 I1
Audio Processor Component Layout
C4
C30
R32 R5
R33
R45 R35
JU11
Y 100nF
4.7µF
JU35
1k50 C11 470k 8k25 JU3
N/I 68k1
C49 C18
R1
R39
JU10
100nF
R4
R53 R44
X 604R
C15 R11 R10
R9 C10 10nF 100nF
JU16
R15 JU13 JU12 221k
C36 R54 10nF 49k9
3k01
N/I 0R0 JU37
49k9 10nF
R90
49k9
49k9
C2
274R
10pF
JU40
JU9
C7
R30 R6
R71
JU42
10k0
JU34
2.2µF
R8
R46
JU20
R34
2.2µF
TP1
681R
R7
63k4
R40
R21 C53
N/I
X 49k9
4k53
JU15
75k0 49k9 10nF
C20
37k4
1k50 JU6
R13
C52
JU7
R37
R22
X JU1
JU36
R18
R20
100nF
C50
JU17 SEL 49k9
49k9
4.7µF
C12
C9
JU21
49k9
JU28
SEL
Y R74
R80
R79 4.7µF
R3 X
R16
1nF
4.7µF
JU22
R50
R17
JU2
27k4
68k1
49k9
R85
5k11
100k
R47
221k
SEL
R84
R86 R25
39k2
R43
4k53
C5
39k2
JU31
22k1
3k48
JU32 JU8
11k8
JU4 JU29
R24
10nF
JU19
JU33
JU25
JU24
R88 R27 R28 R89 X
R49
R52 R41
JU39
JU5 27k4
R87 R26 5k11 R23
JU26 Y
100k
13k3
13k3
100k
R55
49k9
R77
11k8
JU44
JU18
22k1 3k48
JU27
49k9
20k0
5k11
R73
221k
R76
0R0
JU30 JU38 R72
Y 0R0
JU43
R12
N/I
JU14
R51
TP2
1k50
C17
10nF
- COMPONENTS NOT INSTALLED
C3
4.7µF
JU23
DES LOC
R34 G1
R35 G1
R36 S3
R37 I2
R38 N3
R39 F1
R40 E1
R41 E2
R42 Q3
R43 C2
R44 E1
R45 G1
R46 F1
R47 C2
R48 O3
R49 E2
R50 E2
R51 D1
R52 E2
R53 E1
R54 G1
R55 A2
R71 F1
R72 B1
R73 C1
DES LOC
R74 C2
R75 R3
R76 B1
R77 B2
R79 A2
R80 F2
R81 O4
R84 I2
R85 I2
R86 H2
R87 H2
R88 F2
R89 G2
R90 B1
TP1 D1
TP2 E1
U1 L3
U3 N3
U4 R3
U5 N4
U8 S3
U9 S4
U10 T4
Solder Side
- JUMPERS INSTALLED
R2
5k POT
R31
5k POT
R38
100k POT
MICROPHONE
INPUT LEVEL
CONTROL
BALANCE
INPUT LEVEL
CONTROL
BALANCE
COMPRESSION
CONTROL
U1
SA5780
R19
SEL
FB1
C8
10µF
C1
C6
220nF 10nF 2
P1
U3
R48
100k POT
R14
50k POT
MC33172
AUXILIARY
INPUT LEVEL
CONTROL
SYMMETRY
ADJUST
C54
4.7µF
C37
4.7nF
C43
4.7nF
MC33174
R42
5k POT
R29
50k POT
R75
50k POT
R36
50k POT
SUBTONE
INPUT 1
CONTROL
LEVEL
DEVIATION
CONTROL
DC LEVEL
ADJUST
TCXO LEVEL
ADJUST
C45
4.7µF
U4
MC33172
C26 C25 C23
1.0nF 15nF 22nF 2
C41
C38
C44
150nF 330nF 330nF
C48
1.0µF
P2
C27
33nF
P4
PCB 43-911918
TM
5-10
C51
100nF
U8
MC33172
U9
TC4S66F
C55
Q2
4.7µF
BC817
U10
TC4S66F
C46
100nF
C47
1.0µF
P3
MT3APM1B
Component Side
DANIELS
ELECTRONICS LTD.
C39
330nF
R81
10k
U5
C35 C22 C21 C24
330nF 10nF 10nF 10nF
DANIELS
ELECTRONICS
VICTORIA B.C .
TITLE: MT-3
TITLE:
MT-3
Tx
Tx
Audio
AudioProcessor
Processor
SM
SM
Through
SMDesignations
Layout
Layout
Hole
/ Jumpers
Layout
AM
FM
TX
TRANSMITTER
AUDIO
PROCESSOR
Processor
SURFACE
Through
BOARD
MOUNT
Hole
Designations
OUTLINE
LAYOUT
DATE: 19 APRIL 1996
DRAWN
BY: Main
SHANE
Transmitter
Board AInstruction Manual
DWG
TXADPROAS1
TXADPROAT1
DWG
No:TXADPROAT2
TXADPROAS3B
DWG No:
No:
No:
TXADPROAS2B
XXXXXAT1
DWG REV DATE: 23 APR. 99
A
5.5.2
Audio Processor Schematic Diagram V1.8
+8.0V SWD
COMPONENT LOCATION TABLE
C52
1 4.7uF
JU40
C4
100nF 1
R1
604R0
MICROPHONE INPUT
P1
FB1
1 2
R81
10K
MICROPHONE INPUT
LEVEL CONTROL
R2
5K0
R13
49K9
C1
220nF
1 2
R3
5K11 2
C6
10nF
1 2
JU3
JU36
R80
68K1
PRE-EMPHASIS
R4
3K01
C17
10nF
U4a
8 MC33172
C11
100nF
R30
681R0
BALANCED INPUT
2 1
P1
R32
470K0
C9
4.7uF
Vcc 11
G in
JU11
12 Rect in
R37
49K9
2 1
C35
330nF
2 1 2
C3
4.7uF
R38
100K0
R6
N/I
+8.0V SWD
1 2
Filt
15
GND
C2
2 2.2uF
VRef 5
C7
2.2uF
U3a
MC33172
R20
2K21
JU7 L6
JU8 N6
JU9 H4
JU10H5
JU11C4
JU12B6
JU13C6
JU14H6
JU15H7
JU16H8
JU17K4
JU18J7
JU19J6
JU20K7
JU21M6
JU22L4
JU23E7
JU24 J5
JU25 L5
JU26 M5
JU27 B8
JU28 B8
JU29 B8
JU30 E8
JU31 N6
JU32 N7
JU33 N7
JU34 N7
JU35 N8
JU36 E3
JU37 P8
JU38 F7
JU39 B8
JU40 C2
JU42 M6
JU43 M7
JU44 L7
P1-1 A4
P1-2 A4
P1-3 A3
P1-4 A5
P2-1 A6
P2-2 G7
P2-3 A5
P2-4 A5
P3-1 O7
P3-2 D9
P3-3 A5
P3-4 A9
P4-1 A7
P4-2 P8
P4-3 A8
P4-4 J8
Q2 K8
R1 C2
R2 C3
R3 C3
R4 E3
R5 D4
R6 D5
R7 E5
R8 F6
R9 G7
R10 G4
R11 G5
R12 N7
R13 I2
R14 I2
R15 I3
R16 J4
R17 K3
R18 K4
R19 K3
R20 L4
R21 K2
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
1 2
R41
49K9
JU10
C15
10nF
C38
330nF
C21
10nF
FLAT AUDIO
R11
49K9
R23
5K11
R24
5K11
6 POLE BUTTERWORTH FILTER
C23
22nF
JU12
R26
3K48
10
U5 c
MC33174
R84
39K2
R49
27K4
AUXILIARY INPUT
LEVEL CONTROL
TONE/DIGITAL I/P
23
R85
39K2
1 1
JU5
R27
13K3
R28
13K3
12
R8
49K9
U4b
MC33172
PRE-EMPHASIS
C43
4.7nF
1 2
R51
1K50
+9.5V CONTINUOUS
+8.0V SWD
DC LEVEL ADJUST
JU4
R74
27K4
C50
4.7uF
JU39
U8 b
MC33172
SUBTONE INPUT 1
U8a
MC33172
1 2
R43
11K8
U9
TC4S66F
C47
1.0uF
1 2
C27
33nF
1 2
1 C55
4.7uF
R79
49K9
SUBTONE INPUT 1
CONTROL LEVEL
P4
R55
49K9
2 JU30
JU32
P3
MODULATION
OUTPUT
JU33
R36
50K0 2
U10
TC4S66F
JU34 2
C12
1.0nF
1 2
R12
N/I
R35
68K1
JU35
R54
274R0
JU37
P4
2 1
2 2
Vset
R44
0R0
U3b
MC33172
R53
N/I
R34
75K0
high = voice
low = data
JU31
Q2
BC817-25
Tx Audio Control
R76
0R0
C46
100nF
1 2
JU16
JU29
JU20
JU42
JU44
JU28
+9.5V CONTINUOUS
JU8
JU21
C39
330nF
+9.5V CONTINUOUS
+8.0V SWD
JU43
R42
5K0
R29
50K0
JU6
P2
Vset
R72
0R0
1 2
R47
4K53
JU38
JU18
FLAT AUDIO
C45
4.7uF
R73
221K0
C48
1.0uF
C26
2 1.0nF
+8.0V SWD
JU27
JU1
1 C51
2 100nF
C44
R52
330nF
JU15
11K8
1 2 1
2 1
R9
49K9
JU23
1 1
R89
100K0
JU26
C24
2 10nF
DEVIATION
CONTROL
TP2
C49
10nF
1 2
P4
X Y
R75
50K0
R77
20K0
C10
10nF
13
R88
100K0
2 3
+8.0V SWD
JU19
JU14
1 1
JU25
C22
2 10nF
+9.5V CONTINUOUS
+8.0V SWD
P4
14
R87
22K1
U5 d
MC33174
JU7
C41
150nF
1 2
R50
221K0
JU13
R86
22K1
JU24
1 2
R25
3K48
R48
100K0
NOT INSTALLED FOR DIGITAL MOD.
R90 K8
TOT B9
TP1 J2
TP2 C7
U1 D4
U3a G4
U3b O8
U4a J3
U4b G6
U5a L3
U5b K5
U5c M5
U5d N5
U8a C8
U8b E8
U9 M7
U10 M8
Vset C7
Vset O8
C25
15nF
1 2
U5 b
MC33174
R46
4K53
B8
E6
F6
G6
H6
H7
O8
P8
K8
G3
C8
C8
C7
C7
D8
K6
K7
G3
G2
J5
J5
K5
L5
M5
N5
1 2
+9.5V CONTINUOUS
R47
R48
R49
R50
R51
R52
R53
R54
R55
R71
R72
R73
R74
R75
R76
R77
R79
R80
R81
R84
R85
R86
R87
R88
R89
P2
K3
J5
J5
L5
L5
M5
N5
L6
B4
C4
D4
C4
O7
N7
O7
F4
F4
H3
H4
H5
G8
H8
O8
O8
B6
JU17
R7
37K4
C8
2 10uF
G3
H4
H5
H8
G6
H6
H7
M6
N6
N7
B8
C7
D7
D7
J2
K3
K2
L7
B3
D7
G3
D3
B7
F6
O6
R18
1K0
PRE-EMPHASIS
R40
JU9
1K50
2 1
C37
4.7nF
R10
49K9
R16
100K0
P2
DIRECT
MODULATION
INPUT
11
P2
SUBTONE INPUT 2
R19
1K2
10
13 Rect Cap I Ref 6
P3
R17
4K53
+8.0V SWD
Output
COMPRESSION
CONTROL
AGC PREAMP
16
Input 1
C36
C37
C38
C39
C41
C43
C44
C45
C46
C47
C48
C49
C50
C51
C52
C53
C54
C55
FB1
JU1
JU2
JU3
JU4
JU5
JU6
JU22
P1
14
Mute
R5
8K25
R31
5K0
U1
SA578D
R33
1K50
4.7uF
BALANCED
INPUT LEVEL
C30
CONTROL
P1
U5a
MC33174
R39
221K0
C36
10pF
1 2
R71
63K4
C5
2 10nF
R22
C53
10nF 1 49K9
R15
49K9
C1 C3
C2 D5
C3 G4
C4 B2
C5 C3
C6 C3
C7 E5
C8 E5
C9 E4
C10 G7
C11 E4
C12 O7
C15 F5
C17 J3
C18 J2
C20 K2
C21 K5
C22 K5
C23 M5
C24 L5
C25 N5
C26 N5
C27 N7
C30 C4
C35 F4
1 C20
100nF
R21
49K9
JU2
+8.0V SWD
C54
1 4.7uF
TP1
SYMMETRY
1 ADJUST
+9.5V CONTINUOUS
R14
50K0
FLAT
+8.0V SWD
DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC
C18
100nF
LOW FREQUENCY / DIRECT
MODULATION OUTPUT
R45
N/I
R90
10K0
TCXO LEVEL ADJUST
+9.5V CONTINUOUS
P7 OPTIONAL
J3
P3
P6
J2
MT-3 TX TIME-OUT-TIMER
DE
HIGHEST REFERENCE DESIGNATORS
J4
P3
P8
C55
FB1
JU44
Q2
P4
R90
TITLE:
TP2
U10
-----
DATE: 12 MAY 98
UNUSED REFERENCE DESIGNATORS
J1
C19,C28,C29
C31-C34
C40,C42
R56-R70
R78,R82,R83
U2,U6,U7
JU41
-----
C13,C14,C16
P5
DANIELS
DANIELS
ELECTRONICS
VICTORIA B.C.
MT-3 TX AUDIO PROCESSOR SCHEMATIC DIAGRAM
DWN BY: STAN POLYAKOV
DWG No: MT3APM2D
DWG REV DATE:
APRVD:
19 NOVEMBER 98
BOARD No: 43-911918
BOARD REV:
VERSION 1.8
TM
ELE CTRONICS LTD.
5-11
Transmitter Main Board Instruction Manual
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
5-12
Transmitter Main Board Instruction Manual
6
PARTS LISTS
invisible text
6.1 Transmitter Main Board Parts List
invisible text
6.1.1 Transmitter Main Board Electrical Parts List
Ref
Desig
Description
Part No.
C1
C2
C3
C4
C5
C6, C7
C8
C10
C12- C14
C15
C20
C21, C22
C23
CAP., SM, 10µF TANT., 10%, 35V
CAP., SM, 1.0µF TANT., 20%, 35V
CAP., SM, 10µF TANT., 20%, 16V
CAP., SM, 1.0µF TANT., 20%, 16V
CAP., SM, 100nF CER, 0805, X7R
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER, 0805, X7R
CAP., SM, 10µF CER/2225 50 X7R
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., 100nF FILM, MMK5, 10%, 63V
1055-6D106K35
1055-5B105M35
1055-6C106M16
1055-5A105M16
1008-5A104K5R
1008-4A103K5R
1008-5A104K5R
1008-6H105J5R
1008-4A103K5R
1055-5B475K16
1055-5B475K16
1008-5A104K5R
1016-5A104K63
D1 - D6
D7, D8
DIODE, BYD17J RECTIFIER, SOD-87
DIODE, BAS16, SWITCHING, DO35
2101-BYD17J00
2100-BAS16000
F1
FUSE, 3AMP FAST-BLO, 1-1/4 IN.
5604-5GAGC030 (Optional)
FH1,FH2
FUSE CLIP, O.250"DIAM., W/EAR
5609-C250P01B
FSW1-4
SWITCH, BCD-10 STEPS,5 PIN,PCB
5273-10BCD001
JS1-1
JS1-13
JS2-1
JS3-1
SOCKET STRIP, 1
SOCKET STRIP, 1
SOCKET STRIP, 1
SOCKET STRIP, 1
5016-SL112G08
5016-SL109G08
5016-SL106G08
5016-SL102G08
LPF1-5
LPF8
LPF10
LPF12
LPF14-35
FILTER,
FILTER,
FILTER,
FILTER,
FILTER,
PCB
MT-3 TRANSMITTER, MAIN, VER 1.7
4321-10920917
Q1
Q3-Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
TRANSISTOR, BC817-25 NPN, G.P., SOT-23
TRANSISTOR, BC817-25 NPN, G.P., SOT-23
MOSFET, D5P06V P-CHANNEL, DPAK
TRANSISTOR, BC817-25 NPN, G.P., SOT-23
MOSFET, D5P06V P-CHANNEL, DPAK
TRANSISTOR, BC807-25 PNP, G.P., SOT-23
MOSFET, D15N06V N-CHANNEL, DPAK
TRANSISTOR, PZT2222A NPN, G.P., SOT-223
TRANSISTOR, BC807-25 PNP,SOT23
2120-BC817025
2120-BC817025
2144-D5P06V00
2120-BC817025
2144-D5P06V00
2120-BC807025
2144-D15N06V0
2120-PZT2222A
2120-BC807025
ROW X 12 PIN
ROW X 9 PIN
ROW X 6 PIN
ROW X 2 PIN
SM. EMI/LPF, 360
SM. EMI/LPF, 360
SM. EMI/LPF, 360
SM. EMI/LPF, 360
SM. EMI/LPF, 360
PF, FER.
PF, FER.
PF, FER.
PF, FER.
PF, FER.
Transmitter Main Board Instruction Manual
(Optional)
1306-T361F2D5
1306-T361F2D5
1306-T361F2D5
1306-T361F2D5
1306-T361F2D5
6-1
Ref
Desig
Description
Part No.
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11-R13
R14-R16
R17
R18,R19
R20
R21
R22
R23
R24
R25
R26
R28
R29
R30
R31
R32
R33
R34, R35
R36
R37
R38
R39
R40
R41
R42
R43 - R46
R47
RES., SM, 10R0 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 1k00 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 10R0 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 1k00 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 221k 0805, 1%, 100 ppm
RES., SM, 100k 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 1k00 0805, 1%, 100 ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 68k1 0805, 1%, 100 ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 68k1 0805, 1%, 100 ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 68k1 0805, 1%, 100 ppm
RES., SM, 27k4 0805, 1%, 100 ppm
RES., SM, 1k00 0805, 1%, 100 ppm
RES., SM, 15K0 0805, 1%, 100ppm
RES., SM, 82k5 0805, 1%, 100 ppm
RES., SM, 15K0 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k00 0805, 1%, 100ppm
RES., SM, 68k1 0805, 1%, 100ppm
RES., SM, 27k4 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k00 0805, 1%, 100ppm
RES., SM, 100k 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 10k0 0805, 1%, 100ppm
RES., SM, 15k0 0805, 1%, 100ppm
RES., OPT METAL FILM, 5%,0.5W
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k00 0805, 1%, 100ppm
1150-1A10R0FP
1150-4A2742FP
1150-3A1001FP
1150-4A2742FP
1150-1A10R0FP
1150-4A2742FP
1150-3A1001FP
1150-4A2742FP
1150-5A2213FP
1150-5A1003FP
1150-4A2742FP
1150-4A1002FP
1150-3A1001FP
1150-4A1002FP
1150-4A6812FP
1150-4A1002FP
1150-4A6812FP
1150-4A1002FP
1150-4A6812FP
1150-4A2742FP
1150-3A1001FP
1150-4A1502FP
1150-4A8252FP
1150-4A1502FP
1150-5A2213FP
1150-3A1001FP
1150-4A6812FP
1150-4A2742FP
1150-5A2213FP
1150-3A1001FP
1150-5A1003FP
1150-5A2213FP
1150-4A1002FP
1150-4A1502FP
OPTIONAL
1150-5A2213FP
1150-3A1001FP
RELAY1
RELAY, 9 Vdc, 2 FORM C, PCB MNT
5310-2C09P005
T1
TRANSFORMER, SPT-196 1:1 AUDIO XFMR
1280-600P6005
U1
U2
U3, U4
U6
U7
U8
IC,
IC,
IC,
IC,
IC,
IC,
2302-33172N08
2375-40810N14
2331-11080N16
2305-29510N08
2302-33172N08
2375-45360W16
6-2
MC33172 DUAL OP-AMP, S0-8
4081 QUAD 2 INPUT AND, S0-14
MMAD1108 8 DIODE ARRAY, S0-16
LP2951, PROG, VOLT REG, SO-8
MC33172 DUAL OP AMP, SO-8
MC14536B PROGRAM TIMER, SO-16W
(Optional)
Transmitter Main Board Instruction Manual
6.1.2 Transmitter Main Board Mechanical Parts List
Description
Part No.
Qty.
CABLE, SMB-SMB PLUG, RG316,12cm
$7910-WP0WP012
CABLE, SMA-SMB PLUG, RG316,15cm
CABLE,SMA PL-SMB PL,RG316,11cm
$7910-SP0WP015
$7910-SP0WP011
CABLE, SMA PLUG-PLUG, RG316, 19 cm
$7910-SP0SP019
1 (Enhanced Synth and
Crystal Control)
1 (Low Power Synth)
1 (Reference Input Opt.
Enhanced Synth)
1 (Reference Input Opt.
Low Power Synth)
CONN, TYPE F 48 MALE, RA, PCB MTG
CONN/RF, SMA JACK-JACK BULKHEAD
3720-6048M0RA
5118-J875BJ05
1 (Reference Input Opt.
Low Power Synth)
PANEL, REAR, POS.4, 14HP EXTRSN.
3702-63002101
FASTENER, QUICK RELEASE
3702-10000120
GASKET, BeCu,3FINGER,.25",CLIP
5630-12023250
HANDLE, FRONT PANEL, 14HP, GREY
3702-10000614
HOLE PLUG, 0.25" HOLE, NYLON, BLACK
5671-250N062B
LOCKWASHER, M3, SPLIT,A2 STEEL
5814-3M0LK00S
MIC CONN, 4 PIN MALE, BLACK
5040-114ST0BK
NAMEPLATE, BLANK, 14HP, ALUM.
3702-10001214
NUT, M2.5, HEX, 5.0mm, STEEL/Ni
NUT, M2.5, SQUARE, 5.0mm, ZINC
NUT PRESS, M2.5, 5.6mm OD, PC MNT
5813-2M5HX50N
5813-2M5SQ50Z
5833-T2M55615
PANEL/FRNT,W/IDENT:TX-EXTR.VER
PANEL, REAR,POS.4,14HP EXTRSN.
3802-61002101
3702-63002101
SCREW, M3 x 8, PAN/PHIL, BLACK
SCREW, M3 x8,OVAL C/S/PHIL,A2
SCREW, M2.5 X 10, CHEESE/SLOT, A2
SCREW, M2.5 X 12, FLAT/PHIL, Ni
SCREW, M3 X 6, OVAL C/S/PHIL, Ni
SCREW, M3 X 6 PAN/PHIL, A2
SCREW, M5 X 8 FLAT/PHIL, A2
5812-3M0PP08T
5812-3M0VP08S
5812-2M5CS10S
5812-2M5FP12N
5812-3M0VP06N
5812-3M0PP06S
5812-5M0FP08S
TAB, GROUND, MT-3 SYNTH., BRASS
3702-67800905
2 (Low Power Synth)
WIRE, PVC-STRANDED,
WIRE, PVC-STRANDED,
WIRE, PVC-STRANDED,
WIRE, PVC-STRANDED,
WIRE, PVC-STRANDED,
WIRE, PVC-STRANDED,
7110-22S07300
7110-22S07301
7110-22S07303
7110-22S07302
7110-22S07304
7110-22S07306
22
22
22
22
22
22
AWG BLK., 10.5cm
AWG BRN., 10cm
AWG ORG., 9.5cm
AWG RED, 13.5cm
AWG YEL., 9.5cm
AWG BLUE, 10cm
Transmitter Main Board Instruction Manual
6-3
6.1.3 MT-3 Front Panel Board Electrical Parts List
Ref
Desig
Description
Part No.
D1
LED, RED, 5 mm OD, T-1 3/4
2010-503001RD
PF1
PF2
HEADER, 0.1", RA, 2 ROW X 2 PIN
HEADER, 0.1", RA, 2 ROW X 2 PIN
5010-H202RA9T
5010-H202RA9T
SW1
SWITCH, TOG/DPDT, ON-OFF-ON, PCB/STR
5215-T2031V02
PCB
MT-3 TX FRONT PANEL
4321-40921211
6.2
MT-3 Audio Processor Parts List (Version 1.6)
invisible text
6.2.1 MT-3 Audio Processor Electrical Parts List (Version 1.6)
Ref
Desig
Description
Part No.
C3
C4
C5 - C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21, C22
C23
C24
C25
C26
C27
C28
C29, C30
C31
C32
C33
C34
C35
C36
C37
C38, C39
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 47uF TANT., 20%, 16V
CAP., 100nF FILM, MMK5, 10%, 63V
CAP., SM, 2.2µF TANT., 10%, 20V
CAP., SM, 150pF CER, 0805, C0G
CAP., 680nF FILM, MMK5, 10%, 50V
CAP., SM, 10pF CER, 0805, C0G
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 150pF CER, 0805, C0G
CAP., SM, 100nF CER,0805,X7R,50V
CAP., 10nF FILM, MMK5, 10%, 63V
CAP., 22nF FILM, MMK5, 10%, 63V
CAP., 10nF FILM, MMK5, 10%, 63V
CAP., 15nF FILM, MMK5, 10%, 63V
CAP., 1.0nF FILM, MMK5, 10%, 63V
CAP., 33nF FILM, MMK5, 10%, 63V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 47uF TANT., 20%, 16V
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., SM, 6.8µF TANT., 20%, 10V
CAP., SM, 150pF CER, 0805, C0G
CAP., 330nF FILM, MMK5, 10%, 50V
CAP., SM, 10pF CER, 0805, C0G
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., 330nF FILM, MMK5, 10%, 50V
1055-5B475K16
1008-5A104K5R
1008-4A103K5R
1055-6D476M16
1016-5A104K63
1055-5B225K20
1008-2AI5IJIG
1016-5D684K50
1008-1A100J1G
1008-5A104K5R
1008-4A103K5R
1016-3A472K63
1008-4A103K5R
1008-5A104K5R
1008-2AI5IJIG
1008-5A104K5R
1016-4A103K63
1016-4A223K63
1016-4A103K63
1016-4A153K63
1016-3A102K63
1016-4A333K63
1008-5A104K5R
1055-5B475K16
1055-6D476M16
1016-3A472K63
1055-5B685M10
1008-2AI5IJIG
1016-5B334K50
1008-1A100J1G
1016-3A472K63
1016-5B334K50
6-4
Transmitter Main Board Instruction Manual
Ref
Desig
Description
Part No.
C40
C41
C42
C43
C44
C47, C48
C49
C50
C51
C52
C53
C54 - C56
C57
C58
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., 150nF FILM, MMK5, 10%, 63V
CAP., N/I
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., 330nF FILM, MMK5, 10%, 50V
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., SM, 150pF CER, 0805, C0G
1016-6D105K50
1016-5B154K63
NOT INSTALLED
1016-3A472K63
1016-5B334K50
1016-6D105K50
1008-4A103K5R
1055-5B475K16
1008-5A104K5R
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1016-6D105K50
1008-2AI5IJIG
FB1
FERRITE BEAD, 43 MIX 1812 PKG
1213-43181200
P1 - P4
HEADER, 0.1", R/A, 2 ROW X 2PIN
5010-H202RA9T
PCB
AUDIO PROCESSOR, MT-3 TX
4321-30911916
Q2
TRANSISTOR, BC817-25 NPN, SOT-23
2120-BC817025
R1
R2
R3
R4
R5, R6
R7
R8
R9
R10, R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21, R22
R23, R24
R25, R26
R27, R28
R29
R30
R31
R32, R33
R34
R35, R36
R37
RES., SM, 604R 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 6k81 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k00 0805, 1%, 100ppm
RES., SM, 20k0 0805, 1%, 100ppm
POT., SM/4mm SQ, 100k 11T, SIDE ADJUST
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 11k8 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 100k 0805, 1%, 100ppm
RES., SM, 4k53 0805, 1%, 100ppm
RES., SM, 681R 0805, 1%, 100ppm
THERMISTOR, 10k NTC, 10%, RADL.
RES., SM, 2k21 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 5k11 0805, 1%, 100ppm
RES., SM, 3k48 0805, 1%, 100ppm
RES., SM, 13k3 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
RES., SM, 681R 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k00 0805, 1%, 100ppm
RES., SM, 20k0 0805, 1%, 100ppm
1150-2A6040FP
1174-DM2502J0
1150-3A6811FP
1150-4A2212FP
1150-3A1001FP
1150-4A2002FP
1174-DM4104J0
1150-4A2212FP
1150-4A4992FP
1150-4A1182FP
1150-4A4992FP
1174-DM3503JO
1150-4A4992FP
1150-5A1003FP
1150-3A45315P
1150-2A6810FP
1180-4RDG103K
1150-3A2211FP
1150-4A4992FP
1150-3A5111FP
1150-3A3481FP
1150-4A1332FP
1174-DM3503JO
1150-2A6810FP
1174-DM2502J0
1150-3A1501FP
1150-5A2213FP
1150-3A1001FP
1150-4A2002FP
Transmitter Main Board Instruction Manual
6-5
R38
R39
R40
R41
R42
R43
R44
R45
R46, R47
R48
R49
R50
R51
R52
R61
R71
R72
R73
R74
R75
R76
R77
R78, R79
R80
R81
R82, R83
R84, R85
R86, R87
R88, R89
R90
POT., SM/4mm SQ, 100k 11T, SIDE ADJUST
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 11k8 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 11k8 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 39k2 0805, 1%, 100ppm
RES., SM, 4k53 0805, 1%, 100ppm
POT., SM/4mm SQ, 100k 11T, SIDE ADJUST
RES., SM, 27k4 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 11k8 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 63k4 0805, 1%, 100ppm
RES., SM, 39k2 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 27k4 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
Not Installed
RES., SM, 20k0 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 68k1 0805, 1%, 100ppm
THERMISTOR, 10k NTC, 10%, RADL.
RES., SM, 27k4 0805, 1%, 100ppm
RES., SM, 39k2 0805, 1%, 100ppm
RES., SM, 22k1 0805, 1%, 100ppm
RES., SM, 100k 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
1174-DM4104J0
1150-5A2213FP
1150-3A1501FP
1150-4A1182FP
1174-DM2502J0
1150-4A1182FP
1174-DM2502J0
1150-4A3922FP
1150-3A45315P
1174-DM4104J0
1150-4A2742FP
1150-5A2213FP
1150-3A1501FP
1150-4A1182FP
1150-5A2213FP
1150-4A6342FP
1150-4A3922FP
1150-5A2213FP
1150-4A2742FP
1174-DM3503JO
1Not Installed
1150-4A2002FP
1150-4A4992FP
1150-4A6812FP
1180-4RDG103K
1150-4A2742FP
1150-4A3922FP
1150-4A2212FP
1150-5A1003FP
1150-4A1002FP
U1, U2
U3, U4
U5
U8
U9, U10
IC,
IC,
IC,
IC,
IC,
2328-62700N08
2302-33172N08
2304-33174N14
2302-33172N08
2375-4S66FSMV
6.3
SL6270 VOGAD, S0-8
MC33172 DUAL OP AMP, SO-8
MC33174 QUAD OP AMP
MC33172 DUAL OP AMP, SO-8
TC4S66F BILATERAL SWITCH, SMV
MT-3 Audio Processor Parts List (Version 1.8)
invisible text
6.3.1 MT-3 Audio Processor Electrical Parts List (Version 1.8)
Ref
Desig
Description
Part No.
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
CAP., 220nF FILM, MMK5,10%,50V
CAP., SM, 2.2uF TANT., 20%, 20V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., 10nF FILM, MMK5, 10%, 63V
CAP., SM, 2.2uF TANT., 20%, 20V
CAP., SM, 10uF TANT., 20%, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
1016-5A224K50
1055-5B225K20
1055-5B475K16
1008-5A104K5R
1008-4A103K5R
1016-4A103K63
1055-5B225K20
1055-6C106M16
1055-5B475K16
1008-4A103K5R
6-6
Transmitter Main Board Instruction Manual
Ref
Desig
Description
Part No.
C11
C12
C15, C17
C18, C20
C21, C22
C23
C24
C25
C26
C27
C30
C35
C36
C37
C38, C39
C41
C43
C44
C45
C46
C47, C48
C49
C50
C51
C52
C53
C54 - C55
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., 10nF FILM, MMK5, 10%, 63V
CAP., 22nF FILM, MMK5, 10%, 63V
CAP., 10nF FILM, MMK5, 10%, 63V
CAP., 15nF FILM, MMK5, 10%, 63V
CAP., 1.0nF FILM, MMK5, 10%, 63V
CAP., 33nF FILM, MMK5, 10%, 63V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., 330nF FILM, MMK5, 10%, 50V
CAP., SM, 10pF CER, 0805, C0G
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., 330nF FILM, MMK5, 10%, 50V
CAP., 150nF FILM, MMK5, 10%, 63V
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., 330nF FILM, MMK5, 10%, 50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., 100nF FILM, MMK5, 10%,63V
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 4.7µF TANT., 10%, 16V
1008-5A104K5R
1008-3A102K5R
1008-4A103K5R
1008-5A104K5R
1016-4A103K63
1016-4A223K63
1016-4A103K63
1016-4A153K63
1016-3A102K63
1016-4A333K63
1055-5B475K16
1016-5B334K50
1008-1A100J1G
1016-3A472K63
1016-5B334K50
1016-5B154K63
1016-3A472K63
1016-5B334K50
1055-5B475K16
1016-5A104K63
1016-6D105K50
1008-4A103K5R
1055-5B475K16
1008-5A104K5R
1055-5B475K16
1008-4A103K5R
1055-5B475K16
FB1
FERRITE BEAD, 43 MIX 1812 PKG
1213-43181200
P1 - P4
HEADER, 0.1", R/A, 2 ROW X 2PIN
5010-H202RA9T
PCB
AUDIO PROCESSOR, MT-3 TX
4321-30911918
Q2
TRANSISTOR, BC817-25 NPN, SOT-23
2120-BC817025
R1
R2
R3
R4
R5
R6
R7
R8 - R11
R12
R13
R14
R15
R16
R17
R18
R19
RES., SM, 604R 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 5K11 0805, 1%,100ppm
RES., SM, 3K01 0805, 1%,100ppm
RES., SM, 8K25 0805, 1%,100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 37K4 0805, 1%,100ppm
RES., SM, 49K9 0805, 1%,100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 49k9 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 100k 0805, 1%, 100ppm
RES., SM, 4k53 0805, 1%, 100ppm
RES., SM, 1K0 0805, 1%,100ppm
TEMPSISTOR, 1K2 PTC, 10%,AXIAL
1150-2A6040FP
1174-DM2502J0
1150-3A5111FP
1150-3A3001FP
1150-3A8251FP
1150-TBA
1150-4A3742FP
1150-4A4992FP
1150-TBA
1150-4A4992FP
1174-DM3503JO
1150-4A4992FP
1150-5A1003FP
1150-3A45315P
1150-3A1001FP
1181-3AGD122K
Transmitter Main Board Instruction Manual
6-7
Ref
Desig
Description
Part No.
R20
R21, R22
R23, R24
R25, R26
R27, R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46, R47
R48
R49
R50
R51
R52
R53
R54
R55
R71
R72
R73
R74
R75
R76
R77
R79
R80
R81
R84, R85
R86, R87
R88, R89
R90
RES., SM, 2k21 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 5k11 0805, 1%, 100ppm
RES., SM, 3k48 0805, 1%, 100ppm
RES., SM, 13k3 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
RES., SM, 681R 0805, 1%, 100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 470K0 0805, 1%,100ppm
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 75K0 0805, 1%,100ppm
RES., SM, 68K1 0805, 1%,100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 49K9 0805, 1%,100ppm
POT., SM/4mm SQ, 100k 11T, SIDE ADJUST
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%,100ppm
POT., SM/4mm SQ, 5k 11T, SIDE ADJUST
RES., SM, 11k8 0805, 1%, 100ppm
RES., SM, 0R0 ZERO OHM JUMPER,0805
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 4k53 0805, 1%, 100ppm
POT., SM/4mm SQ, 100k 11T, SIDE ADJUST
RES., SM, 27k4 0805, 1%, 100ppm
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 1k50 0805, 1%, 100ppm
RES., SM, 11k8 0805, 1%, 100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 274R0 0805, 1%,100ppm
RES., SM, 49K9 0805, 1%,100ppm
RES., SM, 63k4 0805, 1%, 100ppm
RES., SM, 0R0 ZERO OHM JUMPER,0805
RES., SM, 221k 0805, 1%, 100ppm
RES., SM, 27k4 0805, 1%, 100ppm
POT., SM/4mm SQ, 50k 11T, SIDE ADJUST
RES., SM, 0R0 ZERO OHM JUMPER,0805
RES., SM, 20k0 0805, 1%, 100ppm
RES., SM, 49k9 0805, 1%, 100ppm
RES., SM, 68k1 0805, 1%, 100ppm
THERMISTOR, 10k NTC, 10%, RADL.
RES., SM, 39k2 0805, 1%, 100ppm
RES., SM, 22k1 0805, 1%, 100ppm
RES., SM, 100k 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
1150-3A2211FP
1150-4A4992FP
1150-3A5111FP
1150-3A3481FP
1150-4A1332FP
1174-DM3503JO
1150-2A6810FP
1174-DM2502J0
1150-5A4703FP
1150-3A1501FP
1150-4A7502FP
1150-4A6812FP
1174-DM3503J0
1150-4A4992FP
1174-DM4104J0
1150-5A2213FP
1150-3A1501FP
1150-4A4992FP
1174-DM2502J0
1150-4A1182FP
1150-0A0R0000
1150-TBA
1150-3A45315P
1174-DM4104J0
1150-4A2742FP
1150-5A2213FP
1150-3A1501FP
1150-4A1182FP
1150-TBA
1150-2A2740FP
1150-4A4992FP
1150-4A6342FP
1150-0A0R0000
1150-5A2213FP
1150-4A2742FP
1174-DM3503JO
1150-0A0R0000
1150-4A2002FP
1150-4A4992FP
1150-4A6812FP
1180-4RDG103K
1150-4A3922FP
1150-4A2212FP
1150-5A1003FP
1150-4A1002FP
U1
U3, U4
U5
U8
U9, U10
IC,
IC,
IC,
IC,
IC,
2327-SA571D00
2302-33172N08
2304-33174N14
2302-33172N08
2375-4S66FSMV
6-8
SA578D COMPANDOR, SO-16L
MC33172 DUAL OP AMP, SO-8
MC33174 QUAD OP AMP
MC33172 DUAL OP AMP, SO-8
TC4S66F BILATERAL SWITCH, SMV
Transmitter Main Board Instruction Manual
7
REVISION HISTORY
ISSUE DATE
REVISION
August 97
First Issue.
Sept. 97
Included PCB version 1.4 Component Layout and Schematic diagrams.
Dec 97
Main PCB version now 1.7 (ECO 515).
• BCD Switches changed from Surface Mount Part to Through Hole Part.
• Audio Amplifier was removed because this option was never used.
• Added Timer Out Timer circuitry to Main Tx Board.
• TOT PCB no longer installed on Audio Processor.
For
A21-TX3-00
TX MAIN/FP, MT-3, STANDARD
A21-TX3-30
TX MAIN/FP, MT-3, + REF. INPUT
TUBING, TFE-260C,14AWG T/W,CLR 7610-260C14TW
18mm Long and Consummable Buss Wire 16 Awg 40mm Long
NOW NOT INSTALLED
Dec 97
For
A21-TX3-01 TX MAIN/FP, MT-3, WITH FUSE
A21-TX3-02 TX MAIN/FP, MT-3, + DC RELAY
A21-TX3-03 TX MAIN/FP, MT-3, + FUSE,RELAY
• Removed Jumpers J1, J5, J8, J10, J11.
• Added Jumpers J22 - J29, J31 - J35.
• Added Test Points TP28 - TP34
Dec 97
Front Panel Board version now 1.2 (ECO 521).
Modified MT-3 Tx Front Panel Board (FPB) to support all options on the
New Transmitter Main Board . Also, the Front Panel Board is now easier to
configure if new microphones (other than Daniels microphones) are used.
The new FPB can be used on the old TX-3 main - all options will function.
However, the old version of FPB will NOT work with the new version TX-3
Main PCB (unless you hard wire one of the microphone pins into the main
PCB (13.8V line.)
Added J2 SM Jumper. This jumper now selects Rx Audio or 13.8V to Pin
4 of the Microphone. This capability used to be selected by a jumper on the
Main Tx Board. For Normal Opertion J2 'x' position must be installed
Options - This is for future use (not used now). Added 2x4 header land
pattern to Tx Front Panel Board. A 2x4 header can be installed to make
other microphones compatible with Daniels Transmitters.
Nov 98
MT-3 FM Audio Processor now version 1.8
The MT-3 FM Audio Processor was re-designed because the IC, SL62070,
VOGAD, SO-8 is no longer available from the supplier. Also, the new
design improves the flat and 300Hz Pre-emphasis audio responses.
Included PCB version 1.8 Component Layout, Schematic diagram, Parts List
and Section 2.4, 3.9 and 3.10.
Transmitter Main Board Instruction Manual
7-1
ISSUE DATE
REVISION
Updated the DE logo and added the statuary trademark statement to the title
page. Updated the Low Frequency Modulation section 3.11 to reflect the in
house document A0361-06.
7-2
Nov 98
Transmitter Main Board Instruction Manual
MT-3 RADIO SYSTEMS
Audio Processor
Instruction Manual
For AM/FM Transmitters
Covers the following
V 2.2 and V2.3 of the FM Audio Processor Board
used in the VT-3/xxx, UT-3/xxx, VT-3Hxxx and
A22-VAP130 AM Audio Processor Version 04
Copyright © 2000 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored
in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise, without the prior written consent of Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronic Ltd. registered in the U.S. Patent and Trademark Office.
Issue:
Issue Date:
Printing Date:
Part No.:
November 2000
January 2001
IM20-AP3
Previous Issue:
Previous Issue Date: October 2000 Daniels Electronics Ltd.
Victoria, BC.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
ii
Audio Processor Board Instruction Manual
TABLE OF CONTENTS
Page
FM AUDIO PROCESSOR .............................................................................................1-1
1.1
Introduction ..........................................................................................................1-1
1.2
Block Diagram (FM Audio Processor).................................................................1-3
1.3
FM Audio Processor Board Pin Connections.......................................................1-4
1.4
Factory Configuration...........................................................................................1-4
1.5
Turn-on Time........................................................................................................1-5
1.6
Low Frequency Modulation..................................................................................1-5
1.7
Transmitter Standby Modes..................................................................................1-5
SIGNALS.........................................................................................................................2-1
2.1
FM Audio Processor Outputs...............................................................................2-1
2.2
Modulation Output ...............................................................................................2-1
2.3
Low Frequency / Direct Mod. Output...................................................................2-1
2.4
Microphone Input.................................................................................................2-1
2.5
Balanced Input......................................................................................................2-1
2.6
Auxiliary Input......................................................................................................2-2
2.7
Subtone Inputs......................................................................................................2-2
2.8
Direct Modulation Input .......................................................................................2-2
THEORY OF OPERATION ............................................................................................3-1
ALIGNMENT..................................................................................................................4-1
4.1
Standard Deviation Adjustment.............................................................................4-1
4.2
Balanced Input Setup............................................................................................4-1
4.3
Microphone Input Setup.......................................................................................4-1
4.4
Subtone Input Setup .............................................................................................4-2
4.5
Balanced Input Frequency Response....................................................................4-2
TROUBLESHOOTING - TEST EQUIPMENT NEEDED ............................................5-1
5.1
Balanced Input Test ..............................................................................................5-1
5.2
Frequency Response Test.....................................................................................5-1
5.3
Subtone Input Test................................................................................................5-2
5.4
Audio benchmarks ................................................................................................5-2
TEMPERATURE COMPENSATION ............................................................................6-1
ILLUSTRATIONS, TABLES AND SCHEMATIC DIAGRAMS ..................................7-1
7.1
Special Jumper Configuration Table.....................................................................7-1
7.2
FM Audio Processor Component Layout.............................................................7-2
7.3
FM Audio Processor Schematic Diagram.............................................................7-3
FM AUDIO PROCESSOR PARTS LIST.......................................................................8-1
AM AUDIO PROCESSOR.............................................................................................9-5
9.1
Introduction ..........................................................................................................9-5
9.2
Performance Specifications...................................................................................9-5
9.3
Audio Specifications .............................................................................................9-6
Audio Processor Board Instruction Manual
iii
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
10
Audio Circuits.......................................................................................................9-6
Power Requirements .............................................................................................9-6
Transmitter Standby Modes..................................................................................9-6
Audio Circuitry.....................................................................................................9-7
AM Audio Processor Factory Configuration........................................................9-8
AM Audio Processor Alignment...........................................................................9-8
AM Audio Processor Electrical Parts List...........................................................9-11
AM Audio Processor Component Layout...........................................................9-14
AM Audio Processor Schematic Diagram ..........................................................9-15
REVISION HISTORY...................................................................................................10-1
LISTS OF FIGURES
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Block Diagram - Audio Processor............................................................... 1-3
Pin Connection Diagram.............................................................................. 1-4
Microphone and Balanced Input Circuitry................................................... 3-1
Limiter and Splatter Filter ............................................................................ 3-2
Bypassing Compression.............................................................................. 3-3
TX Audio Control Circuitry......................................................................... 3-4
LIST OF TABLES
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
iv
Bandwidth Definition................................................................................... 1-1
Factory Configuration.................................................................................. 1-4
Turn On Time.............................................................................................. 1-5
Mode Condition Table................................................................................. 1-6
Standby Mode Selection Table .................................................................... 1-6
MT-3 Audio Processor Total Current Consumption.................................... 1-6
Operating Current........................................................................................ 5-1
Waveform Levels ......................................................................................... 5-2
Audio Processor Board Instruction Manual
1
FM AUDIO PROCESSOR
1.1
Introduction
The MT-3 FM Audio Processor is a versatile circuit board that can provide several types of audio
processing for voice or data transmission.
The following terms are defined:
Table 1
Bandwidth Definition
Term
Channel Spacing
Rated System Deviation
Wideband
25 kHz or 30 kHz
±5.00 kHz
Narrowband
12.5 kHz or 15 kHz
±2.50 kHz
LTR™ is a trademark of E.F. Johnson Co.
Features include:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Automatic level control using a compression amplifier with a 25 dB dynamic range
Limiter and Splatter filter that removes noise and harmonics
Selectable pre-emphasis or flat audio response
Temperature compensated audio output
Ability to transmit data and voice switched by a single control line.
Backwards compatible with Daniels Electronics MT-2 series transmitters.
Direct modulation input for LTR™, DCS, paging and other digital modulations that
require very low frequency modulation to the synthesizer or crystal oscillator module.
Separate voice and direct modulation outputs, each individually configurable.
Multiple jumpers that can be configured to allow maximum flexibility in routing signals
from inputs to outputs, and disabling selected circuits to reduce operating current.
Dual microphone and balanced audio compression circuits.
On-board multi-configurable temperature compensation to correct for changes in
transmitter deviation over temperature caused by changing characteristics of synthesizers
and oscillators.
A single chip 10th Order Linear Phase Lowpass splatter filter for increased cutoff
attenuation responses needed in today’s narrow band environment.
The ability to switch between narrow and wideband through a single control line which
can be externally controlled. This can be useful when configured as a multi-channel
transmitter which uses mixed wide and narrowband frequencies.
The ability to easily reconfigure fixed operations from narrow to wideband through
simple jumper settings
Audio Processor Board Instruction Manual
1-1
A continuous +9.5 VDC supply and a switched +8.0 VDC supply are required to power the
module which is normally supplied by the Main Transmitter Board.
The 6 audio inputs on the FM Audio Processor are:
•
•
•
•
•
DYNAMIC MICROPHONE INPUT
600 OHM BALANCED INPUT
subtone inputs
auxiliary input.
direct modulation input for data signals.
The Audio Processor's balanced input pins are isolated by a transformer (T1) on the Transmitter
Main Board. Two audio outputs from the MT-3 Audio Processor are routed to the Synthesizer or
Crystal Controlled Oscillator Modules.
1-2
Audio Processor Board Instruction Manual
1.2
Block Diagram (FM Audio Processor)
+4V
+4V
Regulator
Microphone
Input
U2A
Compression
Amp
P1-3
R2
U1A
Preemphasis
Select
Limiter/Summing
Amplifier
Splatter
Filter
U3B
3 KHz
U3A
Balanced
Input
Buffer
Compression
Amp
P1-1
JU11
U1B
R31
Auxillary
Buffer
Amp
R48
U2C
Preemphasis
Select
U5
Audio
Switch 1
Preemphasis
Select
Regular Modulation
Buffer
U3D
Reg Mod
Out
P3-1
49K9
P2-1
3dB
Narrow
Band
Pad
Inverting Amp
JU12
Tone
Digital
Input
U2D
TCVCXO
Modulation Buffer
U6
JU34
49K9
Audio
Switch 2
U3C
P4-2
JU35
Low Freq
Out
JU14
R36
JU25
Subtone
P2-2
R42
Subtone
JU26
2 Port
Polarity
Select
JU13
TCVCXO
DC Level
Adjust
Tx Audio
Control
P4-1
JU4
Tx Audio
Control
JU28
Q1
Direct Modulation
Offset Buffer
JU30
U2B
P4-4
Wide/Narrow
Band Select
Data/Voice
Select
JU27
P4-3
JU43
Coupling
Select
Offset
R87
Direct
Modulation
Input
Figure 1 Block Diagram - Audio Processor
Audio Processor Board Instruction Manual
1-3
1.3
FM Audio Processor Board Pin Connections
P3
P4
P2
P1
Surface Mount Side
PCB
END VIEW
+9.5V
Mic Input
+8V
-10
dBm
Subtone Input 1
Voice
And Subtone
Output
Balanced Input
-18
dBm
Low Frequency
Direct Mod Output
dBm
-8
dBm
Figure 2 Pin Connection Diagram
1.4
Factory Configuration
The MT-3 FM Audio Processor is factory configured as follows:
Table 2
Parameter
Specification
Maximum Deviation
±2.5 kHz (Narrowband),
±5.0 kHz (Wideband).
1 kHz signal at -10 dBm gives ±60% rated system deviation
1 kHz signal compression set at ±84% rated system deviation
1 kHz tone at -8 dBm gives ±60% rated system deviation
1 kHz signal compression set at ±84% rated system deviation
100 Hz tone at -18 dBm gives ±500 Hz (Wideband)
±350 Hz (Narrowband) deviation
Disabled
Microphone Input
Audio Balanced Input
pre-emphasis response
Subtone Input 1
All other audio inputs
1-4
Factory Configuration
Audio Processor Board Instruction Manual
1.5
Turn-on Time
This measurement is made with the standard factory settings with a 1 kHz tone applied to the
balanced input. The turn-on time is the time it takes the FM Audio Processor to output a stable
audio signal to P3-1 from the time its power (+8.0 VDC) is switched on.
The turn-on time can be virtually eliminated by configuring the FM Audio Processor for
continuous audio standby (see section 1.7 Transmitter Standby Modes). The drawback is that
more current is used to enable the audio circuits to minimize the turn on time. The bulk of the delay
is in the powering of the compression amplifier. For applications that do not use the compression
amplifier, the fast turn on times apply as in the case of data transmission, or audio with no
compression.
Table 3
1.6
Turn On Time
Mode
Turn on time
Fast turn on – higher current
Current save – slower response
Approx 1mS
Approx 150mS
Audio Processor
Standby Current
15 mA
450uA
Low Frequency Modulation
The transmitter has an additional option to address low frequency user modulation requirements. A
phase modulated bandwidth from 0 (dc) to 100 Hz (PLL loop filter bandwidth) allows specialized
applications such as paging or trunking where a separate low frequency digital/analog modulation
channel is required. Low Frequency Modulation allows external access to the low frequency
modulation capabilities of the synthesizer module. The DIRECT MODULATION inputs on the J1
control connector of the M-3 motherboard will be used (B20 for TX A, and A20 for
TX B). Refer to “Data Modulation and Signalling Applications Manual”, P/N AM20-DMS for
specific FM Audio Processor configuration methods.
1.7
Transmitter Standby Modes
The MT-3 series transmitters has 8 different standby modes that trade-off standby current
consumption for start-up speed.
Three of these jumpers are on the Transmitter Main Board :
• J6 which always turns on the '+9.5 VDC Switched' supply,
• J7 which selects the power source for the MT-3 FM Audio Processor
• J18 which selects the enable line for the OS-3 or OS-3H Synthesizer, or OC-3 Crystal
Controlled Oscillator module.
Additionally, there is a jumper on the FM Audio Processor Board:
• JU36 which determines the power hookup for the dual compression amplifiers
Audio Processor Board Instruction Manual
1-5
Notes:
If FM Audio Processor JU36 is not installed, both microphone and balanced audio compression
amplifiers will be disabled. This means that the front panel microphone jack will be disabled for
local microphone operations. When in this condition, balanced audio is routed around the
compression circuitry via JU11 (installed) with JU1 and JU2 removed.
Table 4
Mode Condition Table
MODE J6
J7
J18
Synthesizer/Osc
State
1a
1b
1c
2a
2b
2c
PTT Switched
PTT Switched
PTT Switched
Always enabled
Always enabled
Always enabled
PTT Switched
Always enabled
OUT
OUT
OUT
IN
IN
IN
IN
IN
Table 5
MODE
1a
1b
1c
2a
2b
2c
Table 6
Audio
Processor State
(8V Switched)
PTT Switched
PTT Switched
PTT Switched
PTT Switched
PTT Switched
PTT Switched
Always enabled
Always enabled
Standby Mode Selection Table
Total Xmtr Standby
Current
13 mA
6 mA
22 mA
15 mA
13 mA
6 mA
165 mA
25 mA
174 mA
34 mA
165 mA
25 mA
27 mA
20 mA
175 mA
34 mA
Startup Time
150 mS
10 mS
10 mS
150 mS
10 mS
10 mS
10 mS
10 mS
150 mS
10 mS
10 mS
150 mS
10 mS
10 mS
10 mS
10 mS
FM Audio Processor Total Current Consumption.
Compression configuration
Compression enabled (JU36X)
Compression and microphone disabled
(JU36 Open)
Compression enabled (JU36Y)
1-6
Audio Processor
Compression
JU36
Switched +8.0V(X)
Continuous 9.5V(Y)
Disabled (Not Installed)
Switched +8.0V (X)
Continuous 9.5V (Y)
Disabled (Not Installed)
Doesn’t matter
Doesn’t matter
Audio Processor
Current Draw
keyed / unkeyed
15 mA/0.45 mA
9.2 mA/0.45 mA
15 mA /9.2 mA
Audio Processor Board Instruction Manual
2
SIGNALS
The MT-3 FM Audio Processor has six audio inputs, two audio outputs and one audio control
input. Five of the audio inputs are used primarily for voice and tone signals. The sixth, the Direct
modulation input, is used primarily for data signals. The audio control input is used to switch audio
outputs so the transmitter can transmit voice or data.
2.1
FM Audio Processor Outputs
Both the audio outputs, Modulation Output (P3-1) and Low Frequency / Direct Modulation Output
(P4-2), are gated by audio switches U5 and U6 respectively which are controlled by the Transmit
Audio Control Input (P4-4). The audio switches can be operated complimentary to each other so
there can ever only be one source modulating the transmitter. In standard configuration, the
Modulation Output port is used so switch U5 is always on.
2.2
Modulation Output
The Modulation Output port is the output port used by all voice input signals. The voice inputs are
passed to U1A and U1B, a dual programmable compandor which is configured as an automatic
level control amplifier. Op-amp U3A provides the limiting action for the FM Audio Processor.
After the audio signals have been combined limited and buffered, they are filtered by 10th order
Linear Phase Lowpass Filter (U4). The output signal from the filter is then level adjusted by the
deviation control pot, R29, before buffer amplifier U3D.
In special applications, jumper JU6 can be disabled and JU7 enabled, this allows the transmitter to
be modulated directly from the auxiliary input. This should not be done without external filtering
since jumper JU7 bypasses the limiting and filter circuits.
2.3
Low Frequency / Direct Mod. Output
The Low Frequency / Direct Modulation Output port has two functions depending on whether the
transmitter is synthesized or crystal controlled. In a synthesized transmitter, this port is used to
modulate the synthesizer reference frequency. The frequency response of this port is typically DC
to 300 Hz. In a crystal controlled transmitter, this port can be used by the Direct Modulation Input
to directly modulate the crystal control oscillator module. The frequency response of this port is
essentially flat from DC to 5 kHz with no limiting or filtering.
2.4
Microphone Input
The microphone input has an automatically level controlled (ALC) preamplifier U1 whose input
level is controlled by R2. The microphone input level control (R2) can accommodate a -25 dBm to
0 dBm input signal. The microphone input is limited and filtered and is output at the standard
modulation output port. The microphone input can have a standard 6dB/octave pre-emphasis
response or a flat-audio response, jumper JU1 at 'y' and 'x' position respectively.
2.5
Balanced Input
The 600 ohm balanced input uses the ALC preamplifier U1B, with input level control pot (R31).
The balanced input level control can accommodate a -25 dBm to 0 dBm input. (install JU17 when
Audio Processor Board Instruction Manual
2-1
using the lower input levels) Like the microphone input, the balance input is limited and filtered and
is output at the standard modulation output port.
If no compression is required (i.e.: customer is providing their own), JU11 can be enabled
providing a path through R48 (Auxiliary Input Level Control) to amplifier U2C where preemphasis or flat audio can then be selected from its output.
2.6
Auxiliary Input
The auxiliary input is a special input and does not have an ALC. This input can be configured for a
pre-emphasis response (enable JU9Y) or a flat-audio response (enable JU9X). The level for this
input is set by R48. The auxiliary output is normally summed with the voice signals by op-amp
U3A, limited, then filtered and output at the standard modulation output port. When jumper JU6 is
disabled and jumper JU7 is enabled, the auxiliary input can be used to directly modulate the
transmitter. Care should be taken when directly modulating the transmitter with the auxiliary input
because the MT-3 transmitters use direct FM modulation and there is no filtering or limiting action
provided by the auxiliary input. The input level to the auxiliary input should be -18 dBm and can
be driven by one of three inputs:
• the balanced input – JU11
• the tone/digital input – JU12 X or Y enabled
• the direct modulation input – through JU28
When the 600 ohm balanced input is connected to the auxiliary input, the balanced input level
control can be used to adjust the level for the auxiliary input.
2.7
Subtone Inputs
There are two subtone inputs available on the FM Audio Processor. Both subtone inputs can be
individually configured to be output from the standard Modulation Output port or to be output from
the Low Frequency / Direct Modulation Output. In standard configuration, Subtone 1 is summed
with the voice signals to be output from the standard Modulation Output port while Subtone 2 is
used for DCS. Both subtone inputs have an input level control.
2.8
Direct Modulation Input
The Direct Modulation Input is an extremely versatile input. This port is designed to be used for
data signals. Depending on the application, the signal can be amplified, AC or DC coupled and
output to the Modulation Output or the Low Frequency / Direct Modulation Output port. Please
consult the factory for specific jumper settings for your application.
2-2
Audio Processor Board Instruction Manual
3
THEORY OF OPERATION
Voice band audio normally enters the Balanced Input at P1-1 and P1-2 while microphone audio
enters at P1-3. Potentiometer R31 sets the Balanced compression level of U1B while R2 sets the
microphone compression level of U1A. Each amplifier has a dynamic range of 25 dB. Jumper
JU17 is only installed when using very low input levels (-20 to –25 dBm) and allows better tuning
range for R31. The output of the compression amplifiers are normally set for Pre-emphasis
(6dB/Octave) but can be set for flat audio if required by jumpers JU1 and JU2.
+9.5V CONTINUOUS
+8.0V SWD
JU36
R1
215R
C13
47uF
R56
0R0
MICR O P HONE AG C PREAMP
U1 a
SA571D
C25
1.0uF
C4
1.0uF
TP11
MICROP HO NE INP U T
L EVE L CONTROL
R2
5K0
MICROPHONE INPUT
P1
9 THD
Trim
C35
1.0uF
R41
137K
C5
10nF
P1
11
R3
Rect Cap
15 Rect In
C42
680nF
+8.0V SWD
13
Var G
P2
Output
C30
1.0uF
P1
R62
15K4
R3
Rect Cap
B AL A NCE D
C O MP RES S IO N
C O NTR O L
TP3
C15
3.3nF
R6
18K2
2 Rect In
C9
1.0uF
JU17
R9
49K9
JU1
GND
C7
680nF
PRE-EMPHASIS
R7
2K21
R4
18K2
Inv In
R5
1M00
R73
N/I
R38
5K0
C8
4.7uF
C19
330nF
R10
49K9
JU2
FLAT AUDIO
R31
5K0
C2
1.0uF
Vcc
8 THD
Trim
TP4
+9.5V CONTINUOUS
R30
604R
C36
330nF
U1b
SA571D
P2
P1
C26
4.7uF
R63
5K0
R74
N/I
C37
3.3nF
12
Inv In
R39
15K4
R59
20K0
BALANCEDINPUT
PRE-EMPHASIS R8
2K21
R60
R61 18K2
18K2
16
FLATAUDIO
P3
R51
10K0
MICRO P HO N
COMP R ESSI
CON TROL
TP12
14
10
Output
C1
1.0uF
FB1
Var G
BALANC ED
INP U T L EVE L
CONTROL
R64
100K
B ALA NCED A GC P REAMP
JU11
R76
16k2
C51
1.0uF
P2
R65
100K
TWO PORT POLARITY
TP6
JU12
A UXILIARY INPU T
LEV E L CON TROL
R46
4K53
C14
10nF
4.0V R82
10K0
JU14
14
C16
1.0uF
13
12
R57
SEL
JU10
NOT INSTALLEDFOR DIGITAL MOD.
U2d
MC33174
R52
100K
JU33
JU5
4.0V
TONE/DIGITAL I/P
C32
N/I (22nF)
R49
R48
100K0 16k2
PRE-EMPHASIS
C38
3.3nF
10
P2
TP2
R11
2K21
U2c
MC33174
R40
49K9
C10
10nF
Y JU9
SUBTONE INPUT 1
FLATAUDIO
SUB TONE 1 INP U T
CONTROL LEV E L
R42
5K0
C39
2.2uF
R43
11K8
JU16
Figure 3 Microphone and Balanced Input Circuitry
Audio Processor Board Instruction Manual
3-1
The microphone and balanced audio signals are summed and limited by U3A. Op-amp U3B
provides audio level temperature compensation (for synthesizer and crystal oscillator sensitivity
variations). Due to the many different characteristics of the models of synthesizer and crystal
oscillators, the components are marked “SELect” and are identified later in this document (section
6.)
4.0V
4.0V
L IMIT ER
T EMPE RATUR E
COMPE N S ATI O N
+8.0V SWD
R84
10K0
R85
10K0
C50
4.7uF
C17
10nF
C49
10nF
U3a
4 MC33174
R27
SEL
R17
SEL
U3b
MC33174
TP5
11
R18
SEL
R19
SEL
R20
SEL
JU24
R16
100K
C43
150pF
P11 +8.0V SWD
R25
SEL
R68
3K48
R24
SEL
JU3
R69
2K00
R26
SEL
P12
C21 1
1.0uF 2
10 P OLE LO W PAS S FI LTER
JU22
P9
TP14
R28
SEL
1 2
TP10
R23
SEL
U4
LTC1569-6
P10
1 In+
Vout 8
2 In-
V+ 7
3 Gnd
Rx 6
4 V-
Div/Clk5
+8.0V SWD
R66
22K1
R67
30K9
1 C6
2 1.0uF
JU6
JU7
Figure 4 Limiter and Splatter Filter
The audio then is filtered by a 10th Order Linear Phase Lowpass splatter filter. This filter improves
on the previous Butterworth filter design for data linearity and increased cutoff attenuation
responses mandated in today’s narrow band environment.
The filter output level is set by R29, the deviation control. From this point, the signal goes to U5 a
bilateral audio switch. U5 is normally configured to be always on. The output of U5 goes to the
final buffer amplifier U3D. By installing JU23 which lowers the audio level one half, a wideband
transmitter can be quickly re-configured into a narrowband transmitter in the field. The output of
U3D has many selectable capacitors which are chosen depending on the synthesizer or crystal
oscillator module that is connected to this main modulation port.
3-2
Audio Processor Board Instruction Manual
If no compression circuitry is required, the balanced input signals can be routed around the
compression circuitry by jumper JU11. Op-amp U2C then would provide the
buffering/amplification. It’s output would normally have pre-emphasis installed but could be
changed to flat if required through jumper JU9. The audio signal is then normally routed to U3A,
the summing amplifier/limiter and processed as mentioned in the previous paragraphs. Note
however, if compression is bypassed, the THD may be higher due to the reduced dynamic input
range causing more clipping.
If compression is bypassed and disabled by the removal of FM Audio Processor jumper JU36
which removes power from the compression IC, there will be 9mA of key down current saved. The
disadvantage is that the microphone circuit will be disabled due to the removal of the common
power to the compression IC.
+9.5VCONTIN UOUS
+8.0V SWD
JU36
R56
0R0
U1b
SA571D
13
C2
1.0uF
Vcc
8 THD
Trim
TP4
Var G
BA LANC E D
COMPRE S S I O N
CONTROL
TP3
Output 7
C15
3.3nF
C30
1.0uF
P1
R62
15K4
R51
10K0
BA LANCED INPUT
JU17
Rect Cap
Inv In
GND
C8
4.7uF
R73
N/I
R38
5K0
C19
330nF
JU2
R10
49K9
FLATAUDI O
R31
5K0
R6
18K2
C7
680nF
R5
1M00
R30
604R
P1
R3
2 Rect In
C9
1.0uF
PRE-EM PHASIS
R7
2K21
R4
18K2
BALANCED
INP U T L E VEL
CONTRO L
R64
100K
BALANCE D A GC PRE AMP
JU11
R76
16k2
R65
100K
TWO PORT POLARI TY
TP6
AUXILIARY INPUT
LEV E L CONTRO L
R48
R49
100K0 16k2
JU14
13
JU33
14
12
C16
1.0uF
4.0V R82
10K0
R57
SEL
JU10
C14
10nF
U2d
MC33174
R52
100K
JU5
4.0V
C32
N/I (22nF)
PRE-EM PHASI S
10
U2c
MC33174
C10
10nF
C38
3.3nF
R11
2K21
R40
49K9
Y JU9
FLAT AUDIO
Figure 5 Bypassing Compression
A second way to route around audio compression if data is not being used is to use the direct
modulation port P4-3 and go through JU28 to R48 and Op-amp U2C.
Subaudible tones enter at P2-2 where their level is controlled by R42. A single jumper JU16
enables the audio path to U3A, the summing amplifier/limiter.
Audio Processor Board Instruction Manual
3-3
Voltage regulator U2A provides regulated +4.0V to all Op-amp stages. Optional potentiometer R14
can be installed (and JU15 removed) for special applications which need a voltage different than
+4.0V.
Data normally enters at P4-3, the Direct Modulation Input. From there, it has many routes that it
can go. JU43 allows direct or on-board capacitive coupling. Op-amp U2B can be configured as a
buffer with a DC offset to handle input data that has a positive DC voltage offset. The data signals
can be sent to gain buffers U2C and U2D through potentiometer R48. Jumper JU14 is normally
installed so that the output from U2D provides the correct data polarity when using two port
modulation.
P11
+8.0V SWD
JU22
U4
LTC1569-6
P9
P10
1 In+
R68
3K48
R69
2K00
C21
1.0uF 2
P12
Vout 8
2 In-
V+ 7
3 Gnd
Rx 6
4 V-
+8.0V SWD
R66
22K1
Div/Clk 5
1 C6
1.0uF
R67
30K9
JU6
JU7
+9.5V CONTINUOUS
JU19
+8.0V SWD
JU31
R72
0R0
+9.5V CONTINUOUS
R29
50K0
U5
TC4S66F
Tx Audio Control
JU18
Q1
BC817-25
JU25
C28
4.7uF
R21
49K9
C46
1.0uF
JU32
C27
100nF
JU45
JU23
C56
33nF
T CXO MO D ULATIO N
TP9
L EVEL A DJ UST
C23
330pF
VOICE+ SUBAUDIBLE
C47
1.0uF
R36
2 50K0
R35 R12
SEL N/I
4.0V
C12
1.0nF
R53
N/I
C55
100nF 4.0V
C44
330pF
R75
10K0
R37
49K9
R34
49K9
JU34
R55
49K9
JU26
R88
49K9
R77
20K0
R22
49K9
R89
100R
JU44
4.0V
R50
49K9
P3
JU8
TP8
14
13
JU29
C33
1.0uF
U3d
MC33174
JU21
C40
1.0uF
4.0V
12
R58
0R0
R79
49K9
C24
10nF
C45
4.7uF
DEV IATIO N
CONT R O L
TP7
R86
10K0
JU38
R32
SEL
+8.0V SWD
U6
TC4S66F
R80
27K4
JU35
TCXO DC
LEVE L
A D J U ST 1
JU41
U3 c
MC33174
R83
50K0
R81
SEL
R78
10K0
R44
0R0
JU39
10
R54
SEL
C34
47uF
JU37
P4
DCS, LTR
R45
N/I
C41
10nF LOW FREQUENCY / DIRECT
MODULATION OUTPUT
Figure 6 TX Audio Control Circuitry
A single TX Audio control line P4-4 has 2 functions. It can be configured to switch U3D inputs
between data and voice. Alternately, it can be configured to remotely switch between wideband and
narrowband applications by switching between the regular audio path and one carrying half the
audio level as determined by resistive divider comprised of R22 and R21.
Due to the complex nature of data modulation methods, the actual configurations and values of
SELected components for LTR, DCS, Paging are contained in a separate applications manual
“AM20-DMS”.
3-4
Audio Processor Board Instruction Manual
4
ALIGNMENT
Verify the standard factory settings for the MT-3 FM Audio Processor as given in section 1 before
beginning the standard deviation adjustment procedure. If the transmitter's operating frequency is
changed beyond the factory recommended bandwidth or if the synthesizer is changed, the FM
Audio Processor should be realigned to optimize the transmitter's performance. The schematic
diagram for the FM Audio Processor is shown in section 7-2 of this manual.
The settings tolerance is +/- 0.1 kHz.
4.1
Standard Deviation Adjustment
Set up the Communications Analyzer :
-Audio filter to LOW PASS 15 or 20 kHz
-To monitor transmit frequency and audio deviation level.
4.2
Balanced Input Setup
10
11
12
4.3
Connect audio generator output to the BALANCED INPUT (Transmitter
Main Board edge connector pins B18, Z18).
Preset
R31 (BALANCED INPUT LEVEL CONTROL)
R38 (COMPRESSION CONTROL)
R29 (DEVIATION CONTROL)
all maximum clockwise
Set audio generator to 2.4 kHz at 0 dBm.
Adjust R29 for ±4.8 kHz (Wideband) or ±2.4 kHz (Narrowband).
Set audio generator to 1 kHz at 0dBm
Set R38 for ±4.2 kHz (Wideband) or ±2.1 kHz (Narrowband).
Repeat steps c) to f) (slight interaction)
Set audio generator to 1 kHz at –8 dBm
Adjust R31 for ±3.0 kHz (Wideband) or ±1.5 kHz (Narrowband).
Set audio generator to 1 kHz at –18 dBm
Ensure deviation is at ±1.0 kHz (Wideband) or ±0.5 kHz (Narrowband).
Set audio generator to 1 kHz at –8 dBm. Set Communications Analyzer Audio
Filter to BANDPASS 300-3400 Hz. Activate distortion analyzer. Confirm that
the distortion is within specification.
Microphone Input Setup
1. Set R2 fully clockwise
2. Apply a 1 kHz tone at 0 dBm to the microphone audio input (PIN 1 on the front
panel connector. Pin 2 is ground). Set R63 (MICROPHONE
COMPRESSION for ±4.2 kHz (Wideband) or ±2.1 kHz (Narrowband).
3. Reduce the audio generator level to –10 dBm. Adjust R2 (MICROPHONE
INPUT LEVEL) for ±3.0 kHz (Wideband) or ±1.5 kHz (Narrowband).
Audio Processor Board Instruction Manual
4-1
4.4
Subtone Input Setup
• Apply a 100 Hz tone at -18 dBm to the subtone 1 input .
• Adjust R42 (SUBTONE INPUT 1) to produce:
• ±500 Hz(Wideband) or ±350 Hz(Narrowband) deviation.
• Remove the signal.
4.5
Balanced Input Frequency Response
• Apply a 1 kHz tone at –18 dBm to the BALANCED INPUT (Transmitter Main
Board edge connector pins B18, Z18).
• Record deviation and use this level as the 0 dB reference.
• Sweep frequency from 100 Hz to 5 kHz.
• The audio response should be within +/- 1dB from 300 Hz to 2500 Hz.
4-2
Audio Processor Board Instruction Manual
5
TROUBLESHOOTING - TEST EQUIPMENT NEEDED
Variable Power supply/supplies to supply 9.6V and 8.0V at the same time.
Digital Voltmeter to measure RMS AC Volts, DC Volts, DC Current and resistance.
20 MHz Oscilloscope, single channel.
Audio Signal Generator (600 Ohm Output Impedance) capable of frrequencies from
67 Hz to 5000 Hz.
Power Supply
• Connect a regulated power supply with +9.5V as follows:
Positive to P2-4
Negative to P1-4 (Ground)
• Connect a regulated power supply with +8.0V as follows:
Positive to P2-3
Negative to P1-4 (Ground)
• Measure total current from both power line inputs:
Table 7
5.1
Operating Current
Voltage Input
Current (mA)
8.0V
15.7
9.5V
0.47
Balanced Input Test
Connect an Audio Generator set for a 2.4 kHz tone @ 0 dBm (775 mV RMS) output to the
Balanced Input (P1-1 and P1-2). Refer to Table 8
Waveform Levels for measurement points,
levels and waveforms that should be present.
Change Audio Generator settings for a 1 kHz tone @ -8 dBm (309 mV RMS) output. Refer to
Table 8
Waveform Levels for levels and waveforms that should be present.
5.2
Frequency Response Test
Reduce Audio Generator level to –18 dBm (98 mV RMS). Step frequency to 500, 1000, 2000 and
3000 Hz. Ensure that the results conform to the 6dB/octave +/- 1 dB from 300 Hz to 2500 Hz
referenced to 1000 Hz. Measurements are made at JU8 with respect to ground.
Audio Processor Board Instruction Manual
5-1
5.3
Subtone Input Test
Change Audio Generator frequency to 100 Hz and maintain level at –18 dBm (98 mV RMS).
Connect output to Subtone Input 1 (P2-2) and ground (P1-4). Refer to Table 8
Waveform
Levels, for levels and waveforms that should be present.
5.4
Audio benchmarks
Set the audio generator to 2.4 kHz @ 0 dBm at the Balanced Input. Compare the waveform levels
with those listed in table below.
Repeat for the various audio frequencies and levels and compare with the levels in the table below.
Table 8
Measured
TP3
TP12
TP10
TP5
JU6
TP8
5-2
Limiting Test
2.4kHz
@0dBm
5.2V P-P
N/A
6.5V P-P
2.4V P-P
5.5V P-P
1.5V
Waveform Levels
Std Level
1 kHz @
-8dBm
3.8V P-P
N/A
4.9V P-P
1.3V P-P
1.7V P-P
0.9V P-P
Mic Test
1 kHz @
-10 dBm
N/A
3.8V P-P
4.8V P-P
1.9V P-P
1.8V P-P
0.9V P-P
Subtone
100 Hz @
-18 dBm
N/A
N/A
1.1V P-P
0.4V P-P
0.4V P-P
0.2V P-P
Audio Processor Board Instruction Manual
6
TEMPERATURE COMPENSATION
The FM Audio Processor includes temperature compensation circuitry to maintain constant
transmitter audio deviation with a fixed level input signal. It is capable of not only compensating for
temperature related level variations within the FM Audio Processor (typically –0.3 to –0.5 dB at
–40C) but can also compensate for changes caused by the synthesizer or crystal oscillator module
that is not equipped with its own temperature compensation.
The factory specification is as follows:
Wideband
When a 2.4 kHz tone is applied at a level of –8dBm to the balanced input of the transmitter, the
transmitter deviation shall be ±4.8 kHz at room temperature and can vary from ±4.5 kHz to
±5.0 kHz from -40ºC to +60ºC.
Narrowband
When a 2.4 kHz tone is applied at a level of –8 dBm to the balanced input of the transmitter, the
transmitter deviation shall be ±2.4 kHz at room temperature and can vary from ±2.25 kHz to
±2.5 kHz from -40ºC to +60ºC.
Since the specifications of the components used in the synthesizer or oscillator may change over
time, changes to the temperature compensation circuit may be necessary even for the same type of
equipment.
Contact the factory for more information on values used.
Audio Processor Board Instruction Manual
6-1
This Page Intentionally Left Blank
6-2
Audio Processor Board Instruction Manual
7
ILLUSTRATIONS, TABLES AND SCHEMATIC DIAGRAMS
7.1
Special Jumper Configuration Table
Jumper
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Default
Position
Factory
Open
Open
In
Open
Open
Open
Open
Open
Open
Open
XY
In
Open
Open
Open
Open
Factory
Open
Open
Open
Open
Open
N/A
Open
Open
Open
Open
Open
Open
In
N/A
Open
Open
Open
Open
In
Type
XY
XY
XY
XY
XY
Single
Single
Single
XY
Single
Single
XY
Single
XY
XY
Single
Single
Single
XY
XY
XY
XY
Single
XY
XY
Single
XY
Single
Single
N/A
Single
Single
Single
XY
XY
XY
Single
Single
XY
N/A
Single
XY
Single
Single
Single
Description
Microphone Pre-Emphasis/Flat Audio
Balanced Audio Pre-Emphasis/Flat Audio
Custom Temperature Compensation Network
Subtone 2
Auxiliary Input routing
Splatter Filter Output
Auxiliary Input routing
Direct Coupled final OP Amp O/P
Auxiliary Output for Pre-Emphasis
4V AC Ground
Balanced Input Compression Bypass
Tone/Digital Input audio routing
Direct Modulation Audio Routing
Two Port Polarity Select
4V Regulator adjust (Bypassed)
Subaudible Enable
Balanced Input Adjust Range extend
Audio Gate disable
Voltage Select (+9.5V/8V) Audio gates
Direct Modulation Audio Routing
Audio Gate Switch
Splatter Filter Enable/Bypass
Narrow Band gain reduction
Custom Temperature Compensation Network
Wide/Narrow Band switched select
Auxiliary output routing
Direct Modulation Input Offset Output
Direct Modulation Input Routing
Coupling Capacitor selection
This skipped designator has been deleted
Splatter Filter output routing
Coupling Capacitor selection
Direct Input Coupling - Auxiliary amplifier
Audio Routing
Audio Routing
AGC Preamp Power select
Direct Couple (TCXO)
Low pass enable
Low Frequency amplfier bias select
This skipped designator has been deleted
Narrow Band gain reduction
Direct Modulation input bias select
Direct Modulation Direct/Cap couple
Coupling Capacitor selection
Coupling Capacitor selection (Default)
WB VHF
WB UHF
NB VHF
NB UHF
& CTCSS
& CTCSS
& CTCSS
& CTCSS
Contact Factory
Contact Factory
Contact Factory
Contact Factory
Installed
Installed
Installed
Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Y default OK
X and Y both
Installed
Y default OK
X and Y both
Installed
Y default OK
X and Y both
Installed
Y default OK
X and Y both
Installed
Not Installed
Contact Factory
Not Installed
Not Installed
Not Installed
Contact Factory
Not Installed
Installed
Contact Factory
Not Installed
Not Installed
Installed
Contact Factory
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Installed
Not Installed
Not Installed
Not Installed
Not Installed
Not Installed
Installed
Not Installed
Not Installed
Not Installed
Installed
Installed
Not Installed
Not Installed
Installed
Not installed
Installed
Not Installed
Not Installed
Installed
Installed
Installed
Installed
Installed
Installed
WB VHF/CTCSS
WB UHF/CTCSS
NB VHF/CTCSS NB UHF/CTCSS
TCXO Op Amp
R35
R32
R81
R54
Not
Not
Not
Not
O Ohms
51K Ohms
51K Ohms
100 Ohms
Not
Not
Not
Not
Auxiliary Op Amp
R57
Not Installed
Not Installed
Not Installed
Installed
Installed
Installed
Installed
Installed
Installed
Installed
Installed
0 Ohms
51K Ohms
51K Ohms
100 Ohms
Not Installed
DANIELS
ELECTRONICS LTD.
TM
Audio Processor Board Instruction Manual
7-1
COMPONENT LOCATION TABLE
7.2 FM Audio Processor Component Layout V2.3
BOTTOM SIDE
P9
P8
JU7
R80
27k4
R12
N/I
JU22
R35
SEL
R69
2k00
P10
P6
R67
30k9
JU19
R23
C45
SEL
4.7µF
JU25
R68
3k48
R21
49k9
C55
100nF
JU32
JU45
R22
49k9
JU8
R85
10k0 Y
R24
SEL
C27
100nF
C56
33nF
JU29
R55
49k9
JU18
R77
20k0
R75
10k0
P4
Q1
BC817-25
Wire Jumper for
UHF versions only
R26
SEL
P3
JU3
R37
49k9
R79
49k9
JU44
JU6
C6
1µF
R86
C24 10k0
10nF
TP5
R66
22k1
JU38
X JU21
R13
C43
X JU1
10k0
150pF
TP10
R84
R16
10k0
C41
100k0
C44
R15
C14
C23
10nF
330pF
10k0
330pF
C17
JU10 10nF
Y JU39 X
R45
10nF
N/I
JU13
R78
R34
JU23
X JU15 Y
10k0
49k9
R20
R28
SEL
SEL
TP8 R89
X JU12 Y
100R
JU26
R46
C49
P7
4k53
10nF
C51
Y JU24 X
JU43
1µF
R18
R17
SEL C36
SEL
R25
330nF
JU9
SEL
JU28
P2
R8
JU37
R9
2k21
49k9
JU34
JU35
R40
49k9
C18
TP7
R88
100nF
49k9
R53
N/I
TP9
TP14
R32
SEL
C12
1.0nF
R54
SEL
JU41
R72 R50
0R00 49k9 TP2
JU31
C21
1µF
P12
R81
SEL
R58
0R00
P11
P5
R44
0R00
DES LOC DES LOC DES LOC
DES LOC DES LOC
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
JU1 F1
JU2 H2
JU3 C1
JU4 H1
JU5 G1
JU6 A2
JU7 A1
JU8 A2
JU9 F2
JU10 F1
JU11 I1
JU12 F1
JU13 F1
JU14 G2
JU15 F1
JU16 G1
JU17 I2
JU18 B2
JU19 B1
JU20 H1
JU21 C2
JU22 A1
JU23 D1
JU24 E2
JU25 B1
R43
11k8
JU16
I1
J1
O3
J1
J2
A2
L4
J2
I1
G2
N/A
C1
K4
F1
L4
M4
E1
F2
H2
G2
A1
H2
E1
C1
H1
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C50
H1
B2
S4
Q3
I1
R4
M4
S4
S3
I1
E2
P4
O4
G1
T4
D1
M4
E1
E1
B1
T4
T4
P3
D2
P3
C51
C52
C53
C54
C55
C56
FB1 K4
C39
2.2µF
TP12
R47
100k
C52
150pF
TP1
R82
10k0
JU27 Y
JU20 Y
C20
10nF
R11
2k21
C54
100nF
R65
100k
R52
100k
R33
100k
C25
1µF
R70
10k0
DES LOC
TP1 F1
TP2 B1
TP3 I2
TP4 J1
TP5 C1
TP6 G2
TP7 D2
TP8 D1
TP9 C1
TP10 D1
TP11 I1
TP12 G1
TP13 H2
TP14 C1
U1
U2
U3
U4
U5
U6
R57
SEL JU33
R10
49k9
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
J1
K3
H1
J1
I2
J2
H2
E2
E2
H2
G2
A1
F1
O3
F1
E1
D2
E2
Q4
E1
B2
A2
C1
C1
D2
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
C2
P3
E1
S3
J2
M3
C1
H1
D1
A1
T3
C2
N3
I1
F2
I1
R3
G1
D1
D1
F2
G1
O3
G1
B1
R39
15k4
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
16k2
TP4
I1
C2
D1
C2
A1
C1
G2
S3
E1
C1
D1
M4
E2
D1
R4
18k2
R51
10k0
C1
1µF
C4
1µF
R56
0R0
R6
18k2
JU17
R7
2k21
JU36
TP3
R5
1M0
JU42 Y
R30
604R0
R73
N/I
P1
C5
10nF
C8
4.7µF
R64
100k
L3
N3
R3
T3
R3
S3
R1
0R0
R62
15k4
C30
1µF
R59
20k
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R89
C2
1µF
C9
1µF
C26
4.7µF
JU2
I1
F2
D1
C1
B2
J1
G2
B1
I1
H1
H1
J1
N3
I2
G2
A2
A2
A2
A1
H2
G1
B1
I2
I2
C2
JU11
TP11
TP13
JU14 X
L4
O4
S4
R4
Q3
T4
Q4
T3
A1
A1
B1
A1
Q1 C2
C19
330nF
TP6
DES LOC
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
R41 C35
137k 1µF
C22
10nF
C10
10nF
DES LOC DES LOC DES LOC DES LOC DES LOC
R3
100k
JU5
R71
5k11
JU26 E1
JU27 H1
JU28 D2
JU29 B2
JU30 N/A
JU31 B1
JU32 A2
JU33 G2
JU34 D2
JU35 D2
JU36 J2
JU37 D2
JU38 C1
JU39 D1
JU40 N/A
JU41 C1
JU42 H2
JU43 D2
JU44 B2
JU45 B2
R60
18k2
R61
18k2
JU4
R49
16k2
F2
G1
N4
G2
A2
B2
R74
N/I
- JUMPERS INSTALLED
TOP SIDE
R2
5K0
R31
5K0
R38
5K0
R63
5K0
MICROPHONE
INPUT LEVEL
CONTROL
BALANCED
INPUT LEVEL
CONTROL
BALANCED
COMPRESSION
CONTROL
MICROPHONE
COMPRESSION
CONTROL
U1
R48
100K0
C50
4.7µF
R14
N/I (5K0)
AUXILIARY
INPUT LEVEL
CONTROL
R42
5k0
R29
50k0
R83
50k0
SUBTONE 1
INPUT LEVEL
CONTROL
DEVIATION
CONTROL
TCXO
DC LEVEL
ADJUST
P5
U3
MC33174
4.0V
VOLTAGE
ADJUST
R36
50k0
P8
TCXO
MODULATION
LEVEL ADJUST
SA571D
R27
SEL
C3
4.7µF
U2
P7
C48
4.7µF
C13
C34
47uF
U5
TC4S66F
MC33174
47uF
U6
TC4S66F
U4
LTC1569-6
P6
C42
680nF
FB1
C7
C29
47uF
C15
680nF
P1
3.3nF
R87
50K0
INPUT
DC LEVEL
ADJUST
C16
1.0µF
C32
N/I
(22nF)
C38
C53
4.7µF
3.3nF
R19
SEL
C37
3.3nF
P2
C31
47uF
P4
P3
C46
1.0µF
C28
4.7µF
C33
1.0µF
C47
C40
1.0µF 1.0µF
MT3APM1F
PCB 43-911923
DANIELS
ELECTRONICS
VICTORIA B.C .
AUDIO
SM
LAYOUT
/ JUMPERS
TITLE: FM
AM
FM TX
TX
TRANSMITTER
AUDIO PROCESSOR
PROCESSOR
SURFACE
BOARD
SM
TH
MOUNT
LAYOUT
DESIGNATIONS
LAYOUT
DESIGNATIONS
OUTLINE
LAYOUT
DANIELS
ELECTRONICS LTD.
TM
7-2
DATE: MAR 27/00
DRAWN
FM AudioBY:
ProcessorSHANE
Board Instruction
Manual
DWG No:
DWG
No: 9119AS3B
9119AS2B
9119ASx
9119AS1
9119AT1
9119AT3
9119AT2
DWG REV DATE: OCT 27/00
A
R71
5K11
7.3
+8.0V SWD
FM Audio Processor Schematic Diagram V2.3
C48
4.7uF
+9.5V CONTINUOUS
+8.0V SWD
C18
100nF
R56
0R0
4.0V VOLTAGE
R14
ADJUST
N/I (5K0)
C25
1.0uF
TP11
R2
5K0
MICROPHONE INPUT
P1
C1
1.0uF
FB1
C35
1.0uF
R3
R39
15K4
R59
20K0
U1b
SA571D
13
+8.0V SWD
P2
+9.5V CONTINUOUS
P2
P1
R62
15K4
R3
2 Rect In
C9
1.0uF
JU17
P1
JU1
4.0V
C15
3.3nF
R6
18K2
C51
1.0uF
P2
R10
49K9
C19
330nF
JU2
R27
SEL
R17
SEL
R38
5K0
C8
4.7uF
R48
100K0
R49
16k2
JU5
TONE/DIGITAL I/P
R46
4K53
C14
10nF
U2 d
MC33174
TP10
R47
100K
PRE-EMPHASIS
C38
3.3nF
10
R11
2K21
YJU9
R29
50K0
R40
49K9
C10
10nF
JU28
R3
100K
JU20
TP13
C22
10nF
R70
10K0
C39
2.2uF
U5
TC4S66F
V+ 7
3 Gnd
Rx 6
R66
22K1
Div/Clk 5
JU16
TP7
R55
49K9
JU18
R22
49K9
JU34
Q1
BC817-25
JU25
C44
330pF
R34
49K9
C23
330pF
WIRE JUMPER
FOR UHF ONLY
C55
100nF 4.0V
U6
TC4S66F
R12
N/I
C56
33nF
R83
50K0
R44
0R0
R54
SEL
10
JU39
JU41
U3 c
MC33174
C34
47uF
JU37
DCS, LTR
C41
10nF LOW FREQUENCY / DIRECT
MODULATION OUTPUT
R45
N/I
J2
MT-3 TX TIME-OUT-TIMER
HIGHEST REFERENCE DESIGNATORS
P7 OPTIONAL
J4
P8
P3
C56
FB1
JU45
Q1
P12
R89
TP13
U6
-----
DE
TITLE:
DANIELS
ELECTRONICS
MT-3 TX AUDIO PROCESSOR SCHEMATIC DIAGRAM
DATE: 19 APR 2000
UNUSED REFERENCE DESIGNATORS
C11
JU30
JU40
-----
-----
-----
-----
-----
-----
VICTORIA B.C.
DWN BY: LARRY JOE
APRVD:
DWG No: MT3APM2F
DWG REV DATE:
03 OCT 2000
BOARD No: 43-911923
BOARD REV:
VERSION 2.3
TM
ELE CTRONICS LTD.
7-3
FM Audio Processor Board Instruction Manual
P4
+9.5V CONTINUOUS
INPUT DC LEVEL
ADJUST
P5
JU45
R81
SEL
R87
50K0
C27
100nF
R32
SEL
R78
10K0
R80
27K4
TCXO DC 2
LEVEL
ADJUST 1
JU44
4.0V R53
N/I
VOICE + SUBAUDIBLE
3 1.0nF
R35
SEL
JU35
JU32
C47
1.0uF
R36 TCXO MODULATION
TP9
50K0 LEVEL ADJUST
JU38
C12
JU27
C46
1.0uF
+8.0V SWD
P3
JU8
R89
100R
JU23
2Y
C28
4.7uF
R21
49K9
R75
10K0
R88
49K9
R77
20K0
JU21
R50
49K9
JU29
C33
1.0uF
TP8
R37
49K9
+8.0V SWD
1 C6
1.0uF
C40
1.0uF
14
13
4.0V
J1
R67
30K9
4.0V
U3 d
MC33174
R79
49K9
J3
DANIELS
2 In-
+8.0V SWD
12
R58
0R0
R43
11K8
P6
DEVIATION
CONTROL
C29
47uF
P10
Vout 8
C24
10nF
JU43
C31
47uF
1 0 P O LE LO WP AS S FILTE R
JU42
R86
10K0
JU6
C45
4.7uF
1 In+
+9.5V CONTINUOUS
4.0V
E5
L7
N8
K7
N8
O8
F6
N8
I4
K4
N6
D9
N7
O7
JU31
JU26
C21
1.0uF 2
JU22
U4
LTC1569-6
4 V-
C52
150pF
U2 b
MC33174
P12
R33
100K
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R89
JU13
JU4
DIRECT
P4
MODULATION
INPUT
P3
R69
2K00
R72
0R0
JU3
R68
3K48
R24
N/I
+9.5V CONTINUOUS
JU19
+8.0V SWD
high = wideband select
low = narrow band select
P4
1 2
C4
G6
O8
P8
J7
D2
F6
K7
D3
F3
E3
D4
F3
D5
G5
O5
O5
M5
M5
C9
I1
K6
E5
E3
K8
JU7
SUBTONE INPUT 2
R26
N/I
R57
SEL
R42
5K0
P11 +8.0V SWD
TP14
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
12
4.0V R82
10K0
R23
SEL
R25
SEL
FLAT AUDIO
P4
J7
L5
K4
K5
K6
B5
C5
O8
C8
N7
N7
N7
N7
F4
D3
H7
D3
E7
H7
O8
O9
B6
D8
E6
E6
M7
TP5
P9
Tx Audio Control
Q1
R28
SEL
SUBTONE INPUT 1
SUBTONE 1 INPUT
CONTROL LEVEL
U1a D2
U1b D4
U2a I2
U2b D8
U2c F6
U2d G6
U3a J4
U3b L4
U3c O8
U3d N6
U4 N5
U5 M7
U6 M8
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
C2
C3
C8
F4
D5
E4
G4
G3
G3
G5
H6
N8
H1
H2
H2
J5
J4
J4
L5
K5
L7
L7
L5
L5
L5
R19
SEL
R20
SEL
JU14
13
14
C16
1.0uF
TP2
high = voice
low = data
DES LOC
TP1 I2
TP2 E7
TP3 F4
TP4 C4
TP5 L4
TP6 G6
TP7 J7
TP8 O6
TP9 O7
TP10 J5
TP11 D3
TP12 F2
TP13 D8
TP14 K5
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
U2 c
MC33174
DES LOC
P1-1 A4
P1-2 A5
P1-3 A3
P1-4 A3
P2-1 A6
P2-2 A7
P2-3 A4
P2-4 A4
P3-1 P6
P3-2 J9
P3-3 A4
P3-4 A9
P4-4 A7
P4-1 A8
P4-3 A9
P4-2 P8
P9 N5
P10 N5
P11 M5
P12 M6
TWO PORT POLARITY
P2
FB1 B3
DES LOC DES LOC DES LOC DES LOC DES LOC
JU26 I8
JU27 D8
JU28 B8
JU29 O6
JU30 N/A
JU31 L6
JU32 O7
JU33 F6
JU34 M7
JU35 N8
JU36 D2
JU37 P8
JU38 O7
JU39 N8
JU40 N/A
JU41 O8
JU42 D8
JU43 B9
JU44 O7
JU45 O7
JU24
R52
100K
JU33
JU10
NOT INSTALLED FOR DIGITAL MOD.
B6
D8
I2
J2
L8
O7
R18
SEL
R65
100K
C32
N/I (22nF)
U3 b
MC33174
1 2
4.0V
C51
C52
C53
C54
C55
C56
11
C43
150pF
TP6
AUXILIARY INPUT
LEVEL CONTROL
F3
O7
M7
B9
D4
B9
F6
O6
P8
D3
G3
G3
H6
H7
O6
O8
E3
J5
N7
M6
O6
O7
G1
K4
J4
BALANCED AGC PREAMP
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C50
TEMPERATURE
COMPENSATION
C49
10nF
U3a
4 MC33174
R76
16k2
JU1 G3
JU2 G4
JU3 L5
JU4 B8
JU5 E6
JU6 P5
JU7 K6
JU8 O6
JU9 I6
JU10 D6
JU11 C5
JU12 B5
JU13 B8
JU14 H6
JU15 H2
JU16 H7
JU17 C5
JU18 L7
JU19 J6
JU20 C8
JU21 K7
JU22 N5
JU23 N7
JU24 K5
JU25 L7
D3
E4
I1
D2
C3
O5
E5
F4
D4
F7
N/A
O7
D2
E6
G4
F6
I4
G1
G5
H2
M5
C9
N7
N6
E2
C17
10nF
PRE-EMPHASIS
R7
2K21
R4
18K2
R73
N/I
C7
680nF
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
R85
10K0
C50
4.7uF
JU11
JU12
4.0V
LIMITER
R16
100K
R64
100K
DES LOC DES LOC
R84
10K0
BALANCED
COMPRESSION
CONTROL
TP3
Inv In
GND
BALANCED
INPUT LEVEL
CONTROL
R9
49K9
FLAT AUDIO
R31
5K0
C36
330nF
C2
1.0uF
Rect Cap 1
R5
1M00
R30
604R
C37
3.3nF
Output
C30
1.0uF
R51
10K0
C26
4.7uF
Var G
C54
100nF
DES LOC DES LOC DES LOC
+8.0V SWD
Vcc
8 THD
Trim
TP4
BALANCED INPUT
C53
4.7uF
R15
10K0
R63
5K0
R74
N/I
C42
680nF
11
C20
10nF
PRE-EMPHASIS R8
2K21
R60
R61 18K2
18K2
12
Inv In
FLAT AUDIO
P3
10
Rect Cap 16
15 Rect In
R41
137K
C5
10nF
P1
11
MICROPHONE
COMPRESSION
CONTROL
TP12
14
Var G
Output
MICROPHONE INPUT
LEVEL CONTROL
9 THD
Trim
TO ALL 4.0V SUPPLY POINTS
MICROPHONE AGC PREAMP
U1 a
SA571D
C4
1.0uF
U2a
MC33174
C13
47uF
TP1
JU15
R1
215R
C3
4.7uF
R13
10K0
JU36
COMPONENT LOCATION TABLE
+8.0V SWD
This Page Intentionally Left Blank
DANIELS
ELECTRONICS LTD.
TM
7-4
Audio Processor Board Instruction Manual
8
Ref
Desig
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C50
C51
C52
C53
C54
C55
FM AUDIO PROCESSOR PARTS LIST
Description
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 1.0uF TANT., 20%, 16V
CAP., SM, 680nF CER, 1206, X7R, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., 3.3nF FILM, MMK5, 10%, 63V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 100nF CER., 0805, X7R,
CAP., SM, 330nF CER, 0805, X7R, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 1.0uF TANT., 20%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 330pF CER., 0805, X7R, 50V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 100nF CER., 0805, X7R,
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 47uF TANT., 20%, 16V
CAP., N/I (22nF) FILM, MMK5, 10%,63V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 330nF CER, 0805, X7R, 16V
CAP., 3.3nF FILM, MMK5, 10%, 63V
CAP., 3.3nF FILM, MMK5, 10%, 63V
CAP., SM, 2.2uF TANT., 10%, 20V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 680nF CER, 1206, X7R, 16V
CAP., SM, 150pF CER., 0805,C0G
CAP., SM, 330pF CER., 0805, X7R, 50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 10nF CER,0805,X7R,50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 1.0uF CER, 1206, X7R, 16V
CAP., SM, 150pF CER., 0805,C0G
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 100nF CER., 0805, X7R,
CAP., SM, 100nF CER., 0805, X7R,
Audio Processor Board Instruction Manual
Part No.
1008-6B105Z4R
1008-6B105Z4R
1055-5B475K16
1008-6B105Z4R
1008-4A103K5R
1055-5A105M16
1008-5B684M4R
1055-5B475K16
1008-6B105Z4R
1008-4A103K5R
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1016-3A332K63
1008-6B105Z4R
1008-4A103K5R
1008-5A104K5R
1008-5A334M4R
1008-4A103K5R
1055-5A105M16
1008-4A103K5R
1008-2A331J1G
1008-4A103K5R
1008-6B105Z4R
1055-5B475K16
1008-5A104K5R
1055-5B475K16
1055-6D476M16
1008-6B105Z4R
1055-6D476M16
1016-4A223K63
1008-6B105Z4R
1055-6D476M16
1008-6B105Z4R
1008-5A334M4R
1016-3A332K63
1016-3A332K63
1055-5B225K20
1008-6B105Z4R
1008-4A103K5R
1008-5B684M4R
1008-2A151J1G
1008-2A331J1G
1055-5B475K16
1008-6B105Z4R
1008-6B105Z4R
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1008-6B105Z4R
1008-2A151J1G
1055-5B475K16
1008-5A104K5R
1008-5A104K5R
8-1
Ref
Desig
C56
Description
CAP., SM, 33nF CER, 0805, X7R, 50V
Part No.
1008-4A333K5R
FB1
FERRITE BEAD, SM, 43MIX,.18x.12
1213-43181200
P1
P2
P3
P4
HEADER
HEADER
HEADER
HEADER
5010-H202RA9T
5010-H202RA9T
5010-H202RA9T
5010-H202RA9T
Q1
TRANSISTOR, BC817-25 NPN,SOT23
2120-BC817025
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
RES., SM, 215R 0805, 1%, 100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, 18K2 0805, 1%, 100ppm
RES., SM, 1M00 0805, 1%, 100ppm
RES., SM, 18K2 0805, 1%, 100ppm
RES., SM, 2K21 0805, 1%, 100ppm
RES., SM, 2K21 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 2K21 0805, 1%, 100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%, 100ppm
POT., SM, N/I (5K0) 4mm SQ, 11T,SIDE
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
THERMISTOR, SEL NTC,10%,AXIAL
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
THERMISTOR, SEL NTC,10%,AXIAL
RES., SM, SEL 0805, 1%, 100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 604R 0805, 1%, 100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 49K9 0805, 1%, 100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 15K4 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 137K 0805, 1%, 100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 11K8 0805, 1%, 100ppm
RES., SM, 0R0 0805, 1%, 100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 4K53 0805, 1%,100ppm
RES., SM, 100K 0805, 1%, 100ppm
1150-2A2150FP
1174-DM2502J0
1150-5A1003FP
1150-4A1822FP
1150-6A1004FP
1150-4A1822FP
1150-3A2211FP
1150-3A2211FP
1150-4A4992FP
1150-4A4992FP
1150-3A2211FP
1150-NOTINST
1150-4A1002FP
1174-DM2502J0
1150-4A1002FP
1150-5A1003FP
1150-TBA
1150-TBA
1180-4RDG103K
1150-TBA
1150-4A4992FP
1150-4A4992FP
1150-TBA
1150-TBA
1150-TBA
1150-TBA
1180-4RDG103K
1150-TBA
1174-DM3503J0
1150-2A6040FP
1174-DM2502J0
1150-TBA
1150-5A1003FP
1150-4A4992FP
1150-TBA
1174-DM3503J0
1150-4A4992FP
1174-DM2502J0
1150-4A1542FP
1150-4A4992FP
1150-5A1373FP
1174-DM2502J0
1150-4A1182FP
1150-0A0R0000
1150-NOTINST
1150-3A4531FP
1150-5A1003FP
8-2
0.1",
0.1",
0.1",
0.1",
R/A,
R/A,
R/A,
R/A,
ROW X 2PIN
ROW X 2PIN
ROW X 2PIN
ROW X 2PIN
Ref
Desig
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R89
Description
POT., SM, 100K0 4mm SQ, 100K,11T,SIDE
RES., SM, 16k2 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 0R0 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, 0R0 0805, 1%, 100ppm
RES., SM, 20K0 0805, 1%, 100ppm
RES., SM, 18K2 0805, 1%, 100ppm
RES., SM, 18K2 0805, 1%, 100ppm
RES., SM, 15K4 0805, 1%, 100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, 100K 0805, 1%, 100ppm
RES., SM, 22K1 0805, 1%, 100ppm
RES., SM, 30K9 0805, 1%, 100ppm
RES., SM, 3K48 0805, 1%, 100ppm
RES., SM, 2K00 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 5K11 0805, 1%, 100ppm
RES., SM, 0R0 0805, 1%, 100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, N/I 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 16k2 0805, 1%, 100ppm
RES., SM, 20K0 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 27K4 0805, 1%, 100ppm
RES., SM, SEL 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
RES., SM, 10K0 0805, 1%, 100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 49K9 0805, 1%, 100ppm
RES., SM, 100R 0805, 1%, 100ppm
Part No.
1174-DM4104J0
1150-TBA
1150-4A4992FP
1150-4A1002FP
1150-5A1003FP
1150-NOTINST
1150-TBA
1150-4A4992FP
1150-0A0R0000
1150-TBA
1150-0A0R0000
1150-4A2002FP
1150-4A1822FP
1150-4A1822FP
1150-4A1542FP
1174-DM2502J0
1150-5A1003FP
1150-5A1003FP
1150-4A2212FP
1150-4A3092FP
1150-3A3481FP
1150-3A2001FP
1150-4A1002FP
1150-3A5111FP
1150-0A0R0000
1150-NOTINST
1150-NOTINST
1150-4A1002FP
1150-TBA
1150-4A2002FP
1150-4A1002FP
1150-4A4992FP
1150-4A2742FP
1150-TBA
1150-4A1002FP
1174-DM3503J0
1150-4A1002FP
1150-4A1002FP
1150-4A1002FP
1174-DM3503J0
1150-4A4992FP
1150-2A1000FP
U1
U2
U3
U4
U5
U6
IC,
IC,
IC,
IC,
IC,
IC,
2327-SA571D00
2304-33174N14
2304-33174N14
2326-15696N08
2375-4S66FSMV
2375-4S66FSMV
PCB
PCB, FM AUDIO PROCESSOR, MT-3 TX
SA571D COMPANDOR, SO-16L
MC33174 QUAD OP AMP,SO-14
MC33174 QUAD OP AMP,SO-14
LTC1569I, LPF, 10TH ORD, S0-8
TC4S66F BILATERAL SWITCH,SMV
TC4S66F BILATERAL SWITCH,SMV
Audio Processor Board Instruction Manual
4321-30911923
8-3
This Page Intentionally Left Blank
8-4
9
AM AUDIO PROCESSOR
9.1
Introduction
The MT-3 AM Transmitter Main Board integrates the MT-3 Front Panel Board, MT-3 AM
Audio Processor, Synthesizer or Crystal Control module and Amplifier module together to make
a working MT-3 AM series transmitter. The Front Panel Board and the Audio Processor are
soldered directly to the Transmitter Main Board while the Amplifier and the Synthesizer or
Crystal Control module are frequency band sensitive, plug-in modules. Circuitry and jumpers on
the Transmitter Main Board control the operation of the modules as well as the overall operation
of the MT-3 transmitter. Power and signal connections are made to the 48 pin type 'F' connector
on the rear of the Transmitter Main Board and are routed to the other modules. The front and
rear back plates are attached to the Transmitter Main Board and together with the extruded
aluminum shell, as discussed in the assembly section of the Transmitter Manual, form the
transmitter enclosure.
9.2
Performance Specifications
Type:
MT-3 AM Series Transmitter
Compatibility:
VT-3A Series Amplifier, OCT-3 Crystal Oscillator, OST-3
Frequency Synthesizer.
Modulation:
6K00A3 (Amplitude Modulation)
Operating Temperature Range:
-30˚C to +60˚C, optional - 40˚C temperature test.
Operating Humidity:
95% RH (non-condensing) at +25°C.
Operating Voltage:
+13.8Vdc , +9.5 Vdc Regulated.
Front Panel Control:
One 3 position switch
• NORM (repeat mode)
• OFF
• KEY TX
PTT Activation:
• Active to ground with or without time-out-timer;
• Microphone activated with or without time-out-timer;
• Front Panel switch:
KEY TX - without time-out-timer;
• NORM - with or without time-out-timer.
• Isolated (optional relay) with or without time-out-timer.
PTT Time-Out-Timer:
Selectable from 1 sec. to 8 hrs. (factory set 5 min.).
Audio Processor Board Instruction Manual
9-5
9.3
Audio Specifications
Audio Input:
Audio Response:
Audio Distortion:
9.4
-30 to 0 dBm into a 600Ω balanced load.
Flat audio; +1/-3 dB: 300 Hz - 3 kHz
Less than 3% -40˚C to +60˚C at 30% modulation,
Less than 5% -40˚C to +60˚C at 90% modulation
Audio Circuits
All of the audio signal conditioning (e.g. limiting, filtering) is performed by the MT-3 AM Audio
Processor. The transmitter board routes the audio lines from the backplane connector to the
audio processor. The audio lines routed to the audio processor are: a 600 ohm balanced input
(pins B18 and Z18), and a MIC AUDIO from the MT-3 FRONT PANEL BOARD. It is here
that the MIC audio is processed in the same manner as the 600 ohm balanced audio. The audio
processor's balanced input pins are isolated from pins B18 and Z18 by a transformer (T1). Two
audio outputs from the MT-3 AM Audio Processor are routed to the VT-3A130 Amplifier.
The MT-3 AM Audio Processor is a versatile circuitboard that can provide several types of audio
processing. The module also has an on-board programmable push-to-talk (PTT) time-out-timer
(TOT) on an attached circuitboard. A continuous +9.5 Vdc supply and a continuous +13.8 Vdc
supply together with a switched +8.0 Vdc supply are required to power the module. Refer to
section 9.11 "MT-3 AM Audio Processor Component Layout" and to section 9.12 "MT-3 AM
Audio Processor Schematic Diagram" for component location and designation references.
9.5
Power Requirements
The audio processor can be configured for continuous audio standby or for switched audio
standby by the Transmitter Main Board. If fast audio risetime is desired, the transmitter should
be operated in standby mode 3 or 4 as specified below. The current for the associated TOT is
approximately 4 mA when the transmitter is keyed.
9.6
Transmitter Standby Modes
The VT-3A130 Transmitter has four different standby modes that trade-off standby current
consumption for start-up speed. The standby modes are determined by three jumpers: jumper J6
which always turns on the '+9.5 Vdc Switched' supply, jumper J7 which selects the power source
for the MT-3 AM Audio Processor and jumper J18 which selects the enable line for the OST3A128 Synthesizer Module.
9-6
The actual current and start-up time may depend on the frequncy controlled source (crystal or
synthesizer) and amplifier module. The current and start-up times given below are representative
values intended only as a guideline.
MODE 1:
Jumper J6 out
- the audio processor is switched by a PTT signal
- the synthesizer is switched by a PTT signal
- standby current typically 13 mA
- start-up time typically 40 ms
MODE 2:
Jumper J6 in, jumper J7 in the 'y' position, jumper J18 in the 'x' position
- the audio processor is switched by a PTT signal
- the synthesizer is enabled all of the time
- standby current not used in this mode
- start-up time not used in this mode
MODE 3:
Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'y' position
- the audio processor is enabled all of the time
- the synthesizer is switched by a PTT signal
- standby current typically 19 mA
- start-up time typically 40 ms
MODE 4:
Jumper J6 in, jumper J7 in the 'x' position, jumper J18 in the 'x' position
- the audio processor is enabled all of the time
-the synthesizer is enabled all of the time
-standby current typically 163 mA
-start-up time typically 12 ms
9.7
Audio Circuitry
The MT-3 AM Tx Audio Processor refer to section 9.12 "MT-3 AM Audio Processor
Schematic Diagram" has two audio inputs (Microphone input and Balanced input) which can be
used to modulate the transmitter. The input signals are combined by R2 and R17 at a
compandor U1. U1b controls the input level and makes gain inversely proportional to the input
level (say a 20 dB drop in input level will produced a 20 dB increase in gain). The output will
remain fixed at a constant level without clipping and distortion. (Automatic Level Control) The
input signals are adjusted by the pots R1, R16. The variable gain cell in U1a is used as a voltagecontrolled amplifier so that if the power supply (13.8Vdc) has changed the output level will
change in order to keep the modulation of the RF output signal at the same level. The gain
control can be adjust by the pot R4. (Automatic Modulation Control) The audio signal then
amplifies and filters at U2. The output signal is adjusted by the pot R14.
Audio Processor Board Instruction Manual
9-7
9.8
AM Audio Processor Factory Configuration
The MT-3 AM Transmitter Audio Processor is factory configured as follows:
• Microphone Input:
modulations.
• Audio Balanced Input:
modulations.
• Automatic Modulation Control
• Automatic Level Control
1kHz tone at -10 dBm gives
50%
maximum
1 kHz tone at -8 dBm gives 90% maximum
enabled
enabled
The corresponding jumper settings are:
•
•
•
•
•
•
•
•
•
9.9
Jumper JU1:
Jumper JU2:
Jumper JU3:
Jumper JU4:
Jumper JU5:
Jumper JU6:
Jumper JU7:
Jumper JU8:
Jumper JU9:
'x' position
not installed
'y' position
not installed
'y' position
'y' position
not installed
'y' position
installed
Automatic Modulation Control disabled
Modulation configuration
Automatic Level Control enabled
Time-out-time power supply (optional)
Voice application
Voice application
Modulation configuration
Automatic Level Control enabled
Power AMC and Microphone enabled
AM Audio Processor Alignment
Verify the standard factory settings for the MT-3 AM Audio Processor as given in section 9.8
before beginning the standard modulation adjustment procedure. If the transmitter's channel
frequency changes, the audio processor should be realigned to optimize the transmitter's
performance. The schematic diagram for the audio processor is shown in section 9.12 and the
component layout is shown in section 9.11.
*Note: clockwise rotation of controls increases signal levels
9-8
Before adjusting the audio board, confirm that the transmitter frequency is correct.
Unscrew and slide out the case of the transmitter. Locate the Tx Audio Board.
Connect the transmitter RF Output to a Radio communications test set.
Connect the 600 ohm input to the incoming audio (pins B18, Z18). Set the audio
frequency to 1 kHz at the desired level of -8 dBm.
Turn the transmitter on.
Adjust the pot R16, in order to achieve about 0.700 Vrms at TP4.
Adjust the pot R14, in order to achieve about 0.200 Vrms at TP8.
Tune the Audio Adjust pot R35 on the Power Amplifier board to obtain 90% modulation.
Apply a 1 kHz, -20 dBm input signal and adjust the pot R16 in order to obtain 30%
modulation.
10 Apply a 1 kHz, -8 dBm input signal, the modulation should be 90%, observe that the
distortion of the transmitted signal is within 5.0%.
11 Slowly increase the input audio signal level to 5 dBm and observe that the modulation
does not go over 100%. This step verifies the correct operation of the ALC .
12 Change 13.8Vdc power supply to 10V and then to 17V, the modulation of the output RF
signal should remain at the same level of 90% ±7% and distortion should be less then
3%. This step verifies the correct operation of the power regulator on the transmitter
amplifier board.
13 Repeat steps 7 and 9 if required.
14 Supply a 1 kHz, -10 dBm signal to the microphone input. (Note the level restriction of 25 dBm to 0 dBm.)
15 Adjust the Microphone Input Level Adjust pot (R1) to achieve 50% of RF signal
modulation. Observe that the distortion should be under 5%.
16 Turn off the transmitter. Remove the signal source and replace all the screws.
Audio Processor Board Instruction Manual
9-9
This Page Intentionally Left Blank
9-10
9.10
AM Audio Processor Electrical Parts List
Ref
Design
C1
C2
C3
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C25
Description
CAP., SM, 4.7nF CER., 1206, X7R
CAP., 470nF FILM, MMK5,10%,63V
CAP., SM, 680nF TANT., 10%, 35V
CAP., 470nF FILM, MMK5,10%,63V
CAP., SM, 100nF CER., 0805, X7R, 50
CAP., SM, 10nF CER., 0805, X7R
CAP., SM, 680nF TANT., 10%, 35V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., 470nF FILM, MMK5,10%,63V
CAP., SM, 2.2uF TANT., 20%, 20V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., 4.7nF FILM, MMK5, 10%, 63V
CAP., 2.2nF FILM, MMK5, 10%, 63V
CAP., SM, 330pF CER., 0805,C0G
CAP., SM, 220pF CER., 0805,C0G
CAP., SM, 1.0uF TANT., 20%, 35V
CAP., SM, 220pF CER., 0805,C0G
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 680pF CER., 1206,C0G
CAP., SM, 220pF CER., 0805,C0G
CAP., SM, 150pF CER., 0805,C0G
Part No.
1008-3B472K5R
1016-5D474K63
1055-4B684K35
1016-5D474K63
1008-5A104K5R
1008-4B103K5R
1055-4B684K35
1055-5B475K16
1016-5D474K63
1055-5B225K20
1055-5B475K16
1008-3A102K5R
1008-5A104K5R
1016-3A472K63
1016-3A222K63
1008-2A331J1G
1008-2A221J1G
1055-5B105M35
1008-2A221J1G
1055-5B475K16
1008-2B681J1G
1008-2A221J1G
1008-2A151J1G
D1
D2
DIODE, 1N5221B ZENER 3.9V,DO35
DIODE, 1N5221B ZENER 3.9V,DO35
2002-1N5221B0
2002-1N5221B0
FB1
FERRITE BEAD, SM,FERRITE BEAD 43MIX,.18x.12
1213-43181200
P1-P5
HEADER 01", R/A, 2 ROW X 2PIN
5010-H202RA9T
PCB
AUDIO PROCESSOR, VT-3A130
4322-30500494
Audio Processor Board Instruction Manual
9-11
Ref
Design
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R13
R14
R15
R16
R17
R18
R19
R20
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
Description
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 20K0 0805, 1%,100ppm
RES., SM, 49K9 0805, 1%,100ppm
POT., SM, 50K0 4mm SQ, 50K, 11T,SIDE
RES., SM, 30K9 0805, 1%,100ppm
RES., SM, 100K0 0805, 1%,100ppm
TEMPSISTOR, 1K2 PTC, 10%,AXIAL
RES., SM, 4K75 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 27K4 0805, 1%,100ppm
RES., SM, 27K4 0805, 1%,100ppm
RES., SM, 18K2 0805, 1%,100ppm
POT., SM, 100K0 4mm SQ, 100K,11T,SIDE
RES., SM, 49K9 0805, 1%,100ppm
POT., SM, 5K0 4mm SQ, 11T,SIDE
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 470K0 0805, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM, 39K2 0805, 1%,100ppm
RES., SM, 3K48 0805, 1%,100ppm
RES., SM, 51K1 0805, 1%,100ppm
RES., SM, 15K4 0805, 1%,100ppm
RES., SM, 82K5 1206, 1%,100ppm
RES., SM, 3M30 0805, 5%,200ppm
RES., SM, 681R0 0805, 1%,100ppm
RES., SM, 82K5 1206, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 15K4 0805, 1%,100ppm
RES., SM, 51K1 0805, 1%,100ppm
Part No.
1174-DM2502J0
1150-4A2002FP
1150-4A4992FP
1174-DM3503J0
1150-4A3092FP
1150-5A1003FP
1181-3AGD122K
1150-3A4751FP
1150-4A1002FP
1150-4A2742FP
1150-4A2742FP
1150-4A1822FP
1174-DM4104J0
1150-4A4992FP
1174-DM2502J0
1150-4A1002FP
1150-5A4703FP
1150-3A5111FP
1150-4A3922FP
1150-3A3481FP
1150-4A5112FP
1150-4A1542FP
1150-4B8252FP
1150-6A3304JL
1150-2A6810FP
1150-4B8252FP
1150-3A5111FP
1150-4A4752FP
1150-4A1542FP
1150-4A5112FP
U1
U2
IC, SA571D COMPANDOR, SO-16L
IC, MC33174 QUAD OP AMP,SO-14
2327-SA571D00
2304-33174N14
9-12
This Page Intentionally Left Blank
DANIELS
ELECTRONICS LTD.
TM
Audio Processor Board Instruction Manual
9-13
9.11
AM Audio Processor Component Layout
R1
5k0
Microphone
Input Level
Adjust
R4
50k0
Automatic
Modulation
Control Input
Adjust
C3
680nF
D2
1N5221B
R16
5k0
Balanced
Input Level
Adjust
C8
680nF
C12
4.7uF
D1
1N5221B
P8
R14
100k0
Modualtion
Control Output
Adjust
P5
C19
1.0uF
U2
MC33174
U1
SA571D
P1
C2
470nF
wo # xxxx
C21
4.7uF
C11
2.2uF
FB 1
P5
C9
4.7uF
P6
P7
P2
P3
C5
470nF
C10
470nF
C15
C16
4.7nF 2.2nF
R7
1k2 TEMP
PCB 50049-04
Component Side
TP2
R3
49k9
TP 5
C14
100nF
R15
49k9
C17
C25
330pF 150pF
C20
220pF
TP 8
R29
5k11
R20
39k2
R28
82k5
C22
680pF
R22
3K48
R32
51k1
R24
15k4
R31
15k4
TP 6
JU7
JU3
JU9
C6
100nF
R5
30K9
JU8
R13
18k2
JU4
R11
27K4
P1
R17
10k0
TP 4
P5
P2
C1
4.7nF
R8
4k75
C13
1.0nF
C7
10nF
R10
27K4
R6
100k0
TP7
P3
R30
47k5
R18
470k0
R9
10k0
R23
51k1
R26
3M3
R27
681R0
JU5
C23
220pF
TP1
JU2
R25
82k5
C18
220pF
R19
5k11
JU6
TP 3
R2
20k0
JU1
- JUMPERS INSTALLED
Solder Side
- COMPONENTS NOT INSTALLED
DANIELS
ELECTRONICS
MT3AMTXM8C
VICTORIA B.C .
TITLE:
TX
AM
AM
TRANSMITTER
AUDIOPROCESSOR
PROCESSOR
THROUGH
LAYOUT
HOLE DESIGNATIONS
LAYOUT
TITLE:TX
TX
AM
AM
AUDIO
AUDIO
PROCESSOR
SURFACE
OUTLINE
MOUNT
(bottom)
DESIGNATIONS
DATE: 24 AUGUST 1998
DWG
No:
DWG
DWGNo:
DWG
No: VAP130AS2C
VAP130AS1C
VAP130AT2B
XXXXXAT1
VAP130AT1A
DRAWN BY:
SHANE A
DWG
06
/98
DWG
DWGREV
REV
REVDATE:
DATE:AUGUST
DATE:
DATE:MARCH
OCTOBER
AUGUST
25/98
24/98
/ 98
DANIELS
ELECTRONICS LTD.
TM
9-14
Audio Processor Board Instruction Manual
9.12
AM Audio Processor Schematic Diagram
8.0V
8.0V
C14
100nF
JU9
C6
100nF
Automatic Modulatio n C o ntro l
R3
49K9
TP5
C15
4.7nF
C7
10nF
U1a
SA571D
U2a
MC33174
R15
49K9
AM C B yp ass
Micropho ne Input
Leve l Adjust
CW
P1
Micropho ne
TP1
C2
470nF
R2
20K0
Output
JU1
C5
470nF
R20
39K2
R9
10K0
2 Rect In
R18
470K0
Inv In
C13
1.0nF
R28
82K5
U2d
MC33174
C25
150pF
R31
15K4
R25
82K5
R14
100K0
Modulation Co ntro l
Outpu t Adjust
C20
220pF
C19
1.0uF
Mod o utput
P3
JU6
JU5
R8
4K75
JU3
R5
30K9
R22
3K48
CW
TP8
14
13
C18
220pF
R4
50K0
App ro x. 200mV rms @ 90% mod.
12
C17
330pF
JU7
U2 c
MC33174
10
C3
680nF
R6
100K0
TP2
R24
15K4
R32
51K1
R23
51K1
11
GND
P5
Automati c Modulati ons
Co ntrol Input Adjust
Rect Cap 1
R3
U2b
MC33174
R19
5K11
C22
680pF
C23
220pF
3.0 KHZ BU TTERWORTH LOW PASS FIILTER
R30
47K5
TP6
Var G 3
FB1
C1
4.7nF
13.8 Vdc
TP3
Vcc
8 THD
Trim
C16
2.2nF
13
R1
5K0
R29
5K11
3.0 KHZ BESSEL LOW PASS FILTER
R7
1K2
JU2
Auto ma ti c Le ve l Co n tro l
U1 b
SA571D
TP7
P1
B alanced
D2
1N5221B
Input
P1
CW
Var G 14
Output
R27
681R0
D1
1N5221B
9 THD
Trim
A LC B y p ass
R16
5K0
R17
10K0
JU8
11
R3
15 Rect In
C11
2.2uF
8.0V
P2
C12
4.7uF
R26
3M30
C21
4.7uF
C10
R13
470nF 18K2
10
Rect Cap 16
Balanced Input
Level Adjust
TP4
R10
27K4
R11
27K4
Inv In 12
C8
680nF
C9
4.7uF
P1
9.5V
JU4
P2
9.5 Vdc
P8 -1
J7-1
OPTIONAL
P3
P7 -1
P5
J6 -1
MT-3 TX TIME-OUT-TIMER
J8 -1
P9 -1
P3
J5 -1
P6 -1
DANIELS
ELECTRONICS LTD.
TM
Audio Processor Board Instruction Manual
9-15
This Page Intentionally Left Blank
DANIELS
ELECTRONICS LTD.
TM
9-16
Audio Processor Board Instruction Manual
10
REVISION HISTORY
ISSUE DATE
REVISION
First Issue.
Second Issue
Incorporated the AM Audio Processor documentation into this manual.
For specific AM revision history, see manual IM22-MT3AMTXMN-4IM
Oct 2000
Nov 2000
Audio Processor Board Instruction Manual
10-1
This Page Intentionally Left Blank
10-2
Audio Processor Board Instruction Manual
DANIELS
ELECTRONICS LTD. ®
MT-3 RADIO SYSTEMS
VHF AMPLIFIER
INSTRUCTION MANUAL
VT-3
132 - 174 MHz
Covers models:
VT-3/150 Amplifier
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
Issue:
Issue Date:
Printing Date:
Part No.:
Previous Issue:
N/A
May 1998
Previous Issue Date: N/A
January 2001
IM21-VT3150AMP
Daniels Electronics Ltd.
Victoria, B.C.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
ii
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
TABLE OF CONTENTS
Page
GENERAL....................................................................................................................1-1
1.1
Introduction .......................................................................................................1-1
1.2
Performance Specification .................................................................................1-1
THEORY OF OPERATION.........................................................................................2-1
2.1
Amplifier Operation...........................................................................................2-1
2.2
Power Requirements..........................................................................................2-1
2.3
RF Circuitry.......................................................................................................2-2
2.3.1
VT-3/150 Lowpass Filter.......................................................................2-2
2.4
Power Control Circuitry.....................................................................................2-2
2.5
Power Sensing Circuitry....................................................................................2-3
2.5.1
Output Power Sense ..............................................................................2-3
2.5.2
VSWR Sense.........................................................................................2-3
2.5.3
VSWR Overload....................................................................................2-4
VT-3/150 AMPLIFIER ALIGNMENT.........................................................................3-1
3.1
General..............................................................................................................3-1
3.2
Repair Note........................................................................................................3-1
3.3
Recommended Test Equipment List...................................................................3-1
3.4
Printed Circuitboard Numbering Convention.....................................................3-2
3.5
Standard Factory Settings and Jumper Configuration........................................3-2
3.6
VT-3/150 Amplifier Alignment..........................................................................3-2
3.6.1
General..................................................................................................3-2
3.6.2
VT-3/150 Amplifier Adjustment ............................................................3-3
3.6.2.1
General Set-Up..........................................................................3-3
3.6.2.2
Output Power Alarm (Forward Power)......................................3-4
3.6.2.3
Output Power.............................................................................3-5
3.6.2.4
Antenna VSWR Alarm (Reverse Power) ...................................3-5
3.6.2.5
Antenna VSWR Overload..........................................................3-6
3.6.2.6
Procedure Verification ...............................................................3-6
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS................................................4-1
4.1
VT-3/150 VHF Amplifier Component Layout...................................................4-2
4.2
VT-3/150 VHF Amplifier Schematic Diagram...................................................4-3
4.3
VT-3/150 VHF Lowpass Filter Component Layout...........................................4-5
4.4
VT-3/150 VHF Lowpass Filter Schematic Diagram..........................................4-5
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
iii
5
PARTS LISTS...............................................................................................................5-1
5.1
VT-3/150 Amplifier Electrical Parts List............................................................5-1
5.2
VT-3/150 Low Pass Filter Electrical Parts List ..................................................5-3
5.3
VT-3/150 Amplifier Mechanical Parts List ........................................................5-3
REVISION HISTORY..................................................................................................6-1
iv
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
RF Exposure Warning
This transmitting equipment conforms to SAR (Specific Absorption Rate) limits regarding exposure of human
beings to radio frequency electromagnetic energy, as defined in the following national and international standards
and guidelines:
1.
Industry Canada Radio Standards Specification 102 (RSS-102), Evaluation Procedure for Mobile and
Portable Radio Transmitters with respect to Health Canada’s Safety Code 6 for Exposure of Humans to
Radio Frequency Fields;
2.
Health Canada Safety Code 6, Limits of Human Exposure to Radiofrequency Electromagnetic Fields in the
Frequency Range from 3 kHz to 300 GHz1;
3.
United States Federal Communications Commission, Code of Federal Regulations; 47 CFR Part 1,
§ 1.1310 Radiofrequency radiation exposure limits; and
4.
American National Standards Institute (ANSI) criteria for localized SAR in Section 4.2 of “IEEE Standard
for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to
300 GHz”2.
Notes:
A. The SAR limit for uncontrolled exposure of persons not classed as RF and microwave exposed
workers (including the general public) for transmitter equipment operating below 10 GHz, as defined
in the references above, is 2 W/m2 (0.2 mW/cm2).
B. This transmitting equipment is designed for use with an outdoor antenna with a characteristic antenna
gain of 10 dBi, typically mounted at a significant height above ground to provide for adequate signal
coverage. To ensure that the general public is not exposed to a power density above the recommended
limit of 2 W/m2 (0.2 mW/cm2), the equipment must be installed such that the following minimum safe
distances from the antenna are maintained:
6.3 m (20.7 ft)
3.5 m (11.3 ft)
1.8 m (5.9 ft)
when configured with
when configured with
standalone (i.e. no PA)
100 W PA
30 W PA
8W
C. The following power density formula has been utilized in determining minimum safe distances:
S=
PG
4πR 2
where: S = Power density (in appropriate units, e.g. mW/cm2)
P = Power input to the Antenna (in appropriate units, e.g., mW)
G = Power gain of the antenna in the direction of interest relative to an isotropic radiator
R = Distance to the center of radiation of the antenna (appropriate units, e.g., cm)
Minister of Public Works and Government Services, Canada 1999, Cat. H46- 2/ 99- 237E, ISBN 0- 662- 28032- 6
ANSI/IEEE C95.1–1992, Copyright 1992 by the Institute of Electrical and Electronics Engineers, Inc., New York, New York 10017
RF Exposure Warning
This Page Intentionally Left Blank
1
GENERAL
1.1
Introduction
The VT-3/150 Amplifier provides the final stage of RF amplification and filtering for the entire
VHF Transmitter VT-3 132 - 174 MHz family. The amplifier has two distinct frequency ranges:
132 to 150 MHz, and 150 to 174 MHz with continuously adjustable 2.0 to 8.0 Watts output power.
The VT-3/150 Amplifier is housed in a machined aluminum case that ensures optimum RF
shielding, provides a good ground, and also acts as a heatsink.
Additionally, the VT-3/150 Amplifier is equipped with output power and VSWR sensing lines
which can be individually configured as open collector or linear outputs. The internal VSWR
sensor protects the amplifier from high antenna VSWR by approximately halving the amplifier's
RF gain when a VSWR overload condition is present.
Output filtering for the VT-3/150 Amplifier is provided by the VT-3/150 Lowpass Filter Board.
The lowpass filter assembly is mounted in a separate compartment of the amplifier case in order to
provided maximum attenuation of harmonic and other spurious signals.
Refer to Section 4 for the VT-3 132 - 174 MHz VHF amplifier and lowpass filter component
layouts and schematic diagrams
1.2
Performance Specification
Type:
MT-3 series VHF Amplifier module.
Compatibility:
MT-3 series Transmitter Main Board.
Frequency Range:
132 MHz to 150 MHz or 150 MHz to 174 MHz.
RF Power Output:
adjustable 2.0 to 8.0 Watts
RF power Input:
nominal level adjustable from +4 dBm to +10 dBm,
held within +/- 2 dB of nominal.
Ouput Impedance and VSWR:
50 Ω, Type N connector; 3:1 max. VSWR.
Input /Output Isolation:
> 60 dB
Duty Cycle:
100%: Continuous operation from -40˚ C to +60˚C.
Harmonic Emissions:
Less than -80 dBc .
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
1-1
Transmitter Mismatch Protection:
20:1 VSWR at all phase angles.
Transmitter Alarm:
Forward power sense and reverse VSWR;
- open collector output (separate or 'OR'ed configuration);
-linear output (separate lines only).
Operating Temperature Range:
-30˚ C to +60˚ C, optional -40˚ C temperature test.
Operating Humidity:
95% RH (non-condensing) at +25˚ C.
Operating Voltage:
+13.8 Vdc Nominal (range +11 to +16 Vdc),
+9.5 Vdc Regulated.
Transmit Current:
0.7 Amp typical; 1.1 Amp maximum
Amplifier Standby Current:
less than 0.5 mA.
Amplifier Enable:
Active to ground.
Amplifier Enable Response:
1-2
typically overdamped, rising to within 90% of full power
within 5 msec; maximum (underdamped) overshoot of 30%.
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
2
THEORY OF OPERATION
2.1
Amplifier Operation
A power control circuit monitors the RF output power of amplifier U4 and keeps the power
constant. The output power from the high power amplifier will change as the unregulated +13.8
Vdc supply varies. Note that the frequency band does not change how the amplifier operates; it only
changes a few component values in the RF circuitry.
Power for the VT-3/150 Amplifier is provided from the MT-3 Transmitter Board. The +13.8 Vdc
supply (if required) is continuously connected to the amplifier; whereas, the +9.5 Vdc supply is
always switched by the transmitter's PTT circuitry. The VT-3/150 Amplifier will not use any power
from the +13.8 Vdc supply until the amplifier's +9.5 Vdc line is switched on and an RF input
signal is present. The synthesizer or crystal control module controls the +9.5 Vdc to the amplifier's
circuitry; switching it on by grounding the amplifier's input enable line. The synthesizer or crystal
control module will ground the input enable line only when the RF signal from the synthesizer or
crystal control module is phase locked. This prevents unwanted spurious emissions during
transmitter start-up. A typical start-up sequence is shown below:
1) the transmitter is keyed on (+13.8 Vdc is always present)
2) +9.5 Vdc is switched on by the PTT circuitry and the synthesizer
or crystal control module PTT line is pulled low
3) an RF signal is output to the amplifier
4) the amplifier's input enable line is activated
5) the amplifier outputs RF power
2.2
Power Requirements
Typical current requirements for the VT-3/150 Amplifier at different power levels are given in the
Table 2-3 below. The current drawn from the +9.5 Vdc supply should never exceed 1.2 Amps and
the current drawn from the +13.8 Vdc supply should never exceed 1.5 Amps.
Table 2-1
VT-3/150 Amplifier Current Consumption
Output
Power
2.0 W
4.0 W
6.0 W
8.0 W
+9.5 Vdc
+13.8 Vdc
Supply Current Supply Current
0.64 A
0.51 A
0.79 A
0.75 A
0.89 A
0.93 A
1.04 A
1.10 A
Note: Current consumption measured at 153 MHz
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
2-1
2.3
RF Circuitry
The RF circuitry consists of several blocks: a 7 dB input pad (R1, R2, and R3), an RF amplifier
module (U4), an output power boosting transistor (Q7), three directional couplers (TL1, TL3, and
TL4), and the VT-3/150 Lowpass Filter. The heart of the VT-3/150 Amplifier is RF amplifier
module U4. The output of U4 is further amplified by Q1 to a maximum of 8.0 Watts at the antenna
connector. The frequency band of the VT-3/150 Amplifier is determined by the operating frequency
range of the RF amplifier module U4. Directional couplers (TL1, TL3, and TL4) are used to sample
forward and reverse power. The sampled power is used by the sensing and power control circuits to
control the amplifier's operation. The final step in the RF path is output filtering and, as mentioned
earlier, this is done by the VT-3/150 Lowpass Filter.
2.3.1
VT-3/150 Lowpass Filter
The VT-3/150 Lowpass Filter is a 50 ohm, 9 pole, reciprocal filter with a 3 dB cutoff frequency of
approximately 185 MHz. The lowpass filter assembly attenuates the desired signal's harmonics as
well as any other out-of-band emissions so that a 'clean' RF signal is output to the antenna
connector.
2.4
Power Control Circuitry
The VT-3/150 Amplifier employs a closed loop power control which uses a sample of the forward
RF power to control the gain of RF amplifier U4. Op-amp U1b compares the sampled RF voltage
to the output power setpoint and generates an error signal which Q3 uses to control the voltage on
U4's gain control pin. The output power setpoint is determined by R7, the Output Power Adjust
potentiometer.
The forward power is sampled by TL1, D5, C14, R13, L6, R12, and C15. The power control
circuitry keeps the output power of U4 constant. Therefore the amplifier's output power will
fluctuate with variations in the +13.8 Vdc supply voltage.
2-2
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
2.5
Power Sensing Circuitry
The VT-3/150 Amplifier is equipped with output power and VSWR sensing lines which can be
individually configured as open collector or linear outputs. In open collector configuration, the
output is active low, that is, when a fail condition is detected (not enough output power or too high
antenna VSWR) the open collector transistor is turned on. In linear configuration, a voltage
proportional to the sensed output power or antenna VSWR is output.
Both the Output Power Alarm setpoint and the VSWR Alarm setpoint are individually adjustable;
however, the Output Power Alarm setpoint must always be adjusted before the VSWR Alarm
setpoint. This is because the Output Power Alarm setpoint is used as a reference by the VSWR
Alarm circuitry.
2.5.1
Output Power Sense
The output power sense circuitry uses directional coupler TL2 to sample some of the forward
power. The sampled power is rectified by diode D6 and capacitor C20 and then amplified by
op-amp U3b. Op-amp U3b's amplification is controlled by R21, the output power alarm adjust
potentiometer. The amplified voltage is then output directly in linear operation (JU1 installed, JU2
not installed) or compared by op-amp U1a which then drives transistors Q4 and Q3 for open
collector operation (JU1 not installed, JU2 installed).
In open collector configuration, Q3 (the open collector output transistor) is turned on when an
alarm condition occurs. The adjustment range for the output power alarm can vary depending on
the setting of R21 (the Output Power Alarm Adjust potentiometer).
2.5.2
VSWR Sense
The VSWR sense circuitry uses directional coupler TL3 to sample some of the power reflected
from the antenna terminal. The reflected power is rectified by diode D7 and capacitor C25 and then
amplified by op-amp U2b. Op-amp U2b's amplification is controlled by R36, the VSWR Alarm
Adjust potentiometer. The amplified voltage is then output directly in linear operation (JU4
installed, JU3 not installed) or compared to the output power alarm setpoint by op-amp U3a which
then drives transistor Q5 for open collector operation (JU4 not installed, JU3 installed).
In open collector configuration, Q5 (the open collector output transistor) is turned on when an
alarm condition occurs. The adjustment range for the VSWR Alarm can depending on the setting
of R36 (the VSWR Alarm Adjust potentiometer).
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
2-3
2.5.3
VSWR Overload
The VSWR overload circuit protects the VT-3/150 Amplifier from excessive antenna VSWR by
reducing the amplifier's gain (output power) when an overload condition occurs. The VSWR
overload circuit (R14, R37, R39, R40, U2a, and Q6) is an extension of the VSWR sense circuit and
operates the same as the VSWR sense open collector circuit. The VSWR Overload Adjust
potentiometer (R37) reduces the voltage level of the VSWR Alarm Setpoint. The voltage set by
R37 is the compared to the output power alarm setpoint by op-amp U2a which then drives
transistor Q6. When transistor Q6 turns on, signaling an overload condition, resistor R14 is
grounded which reduces the output power setpoint. Reducing the output power setpoint lowers the
VT-3/150 Amplifier's gain and protects the amplifiers from excessive current draw resulting from
high antenna VSWR.
The VSWR overload circuit's range of adjustment depends on the setting of the VSWR Alarm
Adjust potentiometer (R36). The VSWR overload transistor Q6 can be activated at the same point
at which the VSWR alarm becomes active or the VSWR overload circuit can be disabled by turning
R37 completely counterclockwise.
2-4
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3
VT-3/150 AMPLIFIER ALIGNMENT
3.1
General
Connections to the power supply, alarm and transmit enable lines (ENA), are clearly marked on the
amplifier case. The amplifier is enabled when the enable line (ENA) is grounded.
If the amplifier is installed in the transmitter, alignment is simplified by using an SR-3 Subrack,
SM-3 System Monitor, and RF extender cable to provide transmitter power and signal
interconnection (see the Transmitter Main Board Manual for details). For complete transmitter
alignment, the Transmitter Main Board, Synthesizer, Amplifier, and Audio Processor should be
tuned in the aforementioned order. Please refer the corresponding manuals for each module.
If the input RF level is not changed, adjustments to the output power and alarm thresholds may be
made without removing the amplifier cover. However, in the case of a complete amplifier alignment,
the amplifier should be separated from the Transmitter Main Board and the amplifier cover removed
to expose all amplifier circuitry. All jumpers and test points are clearly marked.
3.2
Repair Note
The VT-3/150 Amplifier is mainly made up of surface mount devices which should not be removed
or replaced using an ordinary soldering iron. Removal and replacement of surface mount
components should be performed only with specifically designed surface mount rework and repair
stations complete with ElectroStatic Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place of
manual vacuum type desoldering tools when removing jumpers. This will help prevent damage to
the circuitboards.
3.3
Recommended Test Equipment List
Alignment of the transmitter requires the following test equipment or its equivalent.
Dual Power Supply:
Oscilloscope / Multimeter:
Current Meter:
Radio communications test set :
VSWR 3:1 mismatch load:
coaxial test cable set
Alignment Tool:
Regulated +9.5 Vdc at 0.1 A.
Regulated +13.8 Vdc at 2 A - Topward TPS-4000
Fluke 97 Scopemeter
Fluke 75 multimeter
Marconi Instruments 2955R
JFW 50T-035-3.0:1
three 50 Ω cables of incremental length 20 to 40 cm
Johanson 4192
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3-1
It is recommended that the radio communications test set be frequency locked to an external
reference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set to
within its ±1 ppm frequency tolerance.
3.4
Printed Circuitboard Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuitboard (PCB) numbering convention in which the last two digits of the circuitboard
number represent the circuitboard version. For example:
• PCB number 43-912010 indicates circuitboard version 1.0;
• PCB number 50002-02 indicates circuitboard version 2.0.
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
3.5
Standard Factory Settings and Jumper Configuration
The VT-3/150 Amplifier is factory configured as follows:
• Open collector configuration for Output Power Alarm.
• Open collector configuration for Antenna VSWR Alarm.
The corresponding jumper settings are:
• Jumper JU1: not installed
• Jumper JU2: installed
• Jumper JU3: installed
• Jumper JU4: not installed
Output power alarm - linear output
Output power alarm - open collector output
Antenna VSWR alarm - open collector output
Antenna VSWR alarm - linear output
3.6
VT-3/150 Amplifier Alignment
invisible text
3.6.1
General
The VT-3/150 Amplifier is a frequency sensitive module that is factory assembled to operate in one
of two frequency bands: 132 to 150 MHz or 150 to 174 MHz. The amplifier requires 7 dBm of
input power and is continuously adjustable over the its power range of 2.0 to 8.0 Watts. The
VT-3/150 Amplifier provides Output Power and Antenna VSWR Alarm outputs which can be
configured for open collector output or linear operation. The amplifier's output power level and
alarm levels can be set without detaching the amplifier from the transmitter board. However, to
change the configuration of the output power alarm or the Antenna VSWR alarm, the VT-3/150
Amplifier must be detached from the MT-3 Transmitter Board. Refer to page 4-2 "VT-3/150 VHF
Amplifier Component Layout" for the location of solder jumpers JU1 to JU4.
3-2
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3.6.2
VT-3/150 Amplifier Adjustment
The Amplifier alignment consists of two adjustment procedures; (i) a general set up (section
3.6.2.1) procedure which sets up the proper bias conditions for the RF transistors and (ii) the RF
threshold adjustments which set up the desired alarm threshold levels as well as the RF output
power. The general alignment procedure is required following major repair operations, changes in
RF input levels or large changes in operating frequency (greater than ± 1.0 MHz).
The RF output and alarm threshold level adjustments are more easily accessible so that fine
adjustments can be made in the field. Depending on user requirements, the RF alarm threshold
levels should be checked whenever a significant change in operating frequency (± 0.5 MHz) is
made. As the antenna VSWR alarm is dependent on the output power alarm, the output power alarm
should always be set first. The order of adjustment should be:
1)
2)
3)
4)
Set the desired output power alarm level (section 3.6.2.2).
Set the output power (section 3.6.2.3).
Set the desired Antenna VSWR alarm level (section 3.6.2.4).
Set the desired overload condition level (section 3.6.2.5).
Details for the alignment steps are outlined below.
3.6.2.1
General Set-Up
All of the setup steps detailed below are performed at the factory as part of the initial
Transmitter alignment. A general realignment of the Amplifier Module will be required
under the following conditions:
(i) the nominal RF input power applied to the amplifier is changed from that
which the amplifier was intially set up for, and
(ii) components, particularly the RF transistors Q1 and Q2, are replaced
during a repair operation.
1.
Connect the transmitter's antenna output connector to the type N input of the radio
communications test set through a short section of low loss 50 Ω coaxial cable.
2.
Turn all four (4) of the adjustment potentiometers (R7, R21, R36, and R37) fully
counterclockwise.
3.
Turn on the power to the transmitter.
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3-3
4.
Monitor the +9.5 Vdc and 13.8 Vdc supply current and adjust R7, the output power
adjustment, so that approximately 1 Amp is being drawn on the +9.5 Vdc line and 1.3
Amps or less is being drawn on the 13.8 Vdc line. This should produce
approximately 8 Watts.
5.
If only a 6 or 7 watt output is obtained, adjust the low pass filter coil pairs L2/L3 and
L1/L4 to obtain 8 watts.
3.6.2.2
Output Power Alarm (Forward Power)
Open Collector Output
* note: the output power alarm output is factory configured as an open collector output
so a pull-up resistor may be required on transmitter pin B26 if one is not already
present.
1.
Adjust R7, the output power adjustment, to the output power at which the Output
Power Alarm is to be activated.
2.
Monitor transmitter pin B26, the Output Power Alarm line, and slowly turn R21, the
output power alarm adjustment, clockwise until pin B26 goes low. The alarm is now
set for the current output power of the transmitter.
Linear Output
1.
Open the amplifier case to disable (open circuit) jumper JU2 and enable (short)
jumper JU1.
2.
Monitor transmitter pin B26 with a voltmeter.
3.
Adjust R7, the output power adjustment, for full transmitter output power.
4.
Adjust R21, the output power alarm adjustment, so that the voltmeter indicates +7.5
Vdc for full transmitter output power.
5.
Turn R7, the output power adjustment, fully counterclockwise. The voltmeter should
read approximately +3 Vdc.
6.
Disconnect the voltmeter.
3-4
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3.6.2.3
1.
Output Power
Turn R7, the output power adjustment, clockwise to the desired transmitter output
power.
3.6.2.4
Antenna VSWR Alarm (Reverse Power)
Open Collector Output
* note: the antenna VSWR alarm output is factory configured as an open collector
output so a pull-up resistor may be required on transmitter pin Z26 if one is not
already present. The output power alarm must be set first before the antenna VSWR
alarm can be set.
1.
Disconnect the radio communications test and terminate the transmitter with the 3:1
mismatch load.
2.
Monitor pin Z26, the Antenna VSWR Alarm line, and turn R36 fully
counterclockwise. Pin Z26 should be high. Slowly turn R36 clockwise until pin Z26
is pulled low. Put the 50 ohm load back on again, Pin Z26 should go high. The
reverse power trip point is now set for a VSWR of 3:1.
Linear Output
1.
Open the amplifier case to disable (open circuit) jumper JU3 and enable (short)
jumper JU4.
2.
Monitor transmitter pin Z26 with a voltmeter.
3.
Disconnect the radio communications test set and terminate the transmitter with the
3:1 mismatch load.
4.
Adjust R36, the VSWR alarm adjustment, so that the voltmeter indicates +5 Vdc for a
3:1 mismatch.
5.
Put the 50 ohm load back on again. The voltmeter should read approximately 0 Vdc.
6.
Disconnect the voltmeter.
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
3-5
3.6.2.5
Antenna VSWR Overload
1.
Disconnect the radio communications test set and so that the amplifier is terminated
with an open circuit.
2.
Monitor the current from the +9.5 Vdc supply.
3.
Adjust R37, the VSWR overload adjustment, clockwise until a noticeable drop in the
+9.5 Vdc current occurs.
4.
Reconnect the radio communications test set and, the +9.5 Vdc current should return
to the previous level.
3.6.2.6
Procedure Verification
1.
Verify that the current drawn from the +13.8 Vdc supply is less than 1.5 A and from
the +9.5 Vdc supply is less than 1.2 A when transmitting full RF output power (8
Watts).
2.
Turn off the power to the transmitter.
3-6
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
4
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-1
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
4.1
VT-3/150 VHF Amplifier Component Layout
MBZ5233B
R37
50K
JU3
R21
50K
JU4
R36
50K
R38
Q5
PZT2222A
1K
JU1
R7
50K
R25
1K
JU2
R6
27K4
R14 10K
R4
D1
R5
4K53
C13
100n
R8
3K48 10n C14
MMBD701
D7
Q6
10K R41
Q1
IRF9540
R10
10K
C12
10nF
27K4
U1
R28 R29
Q3
MC
10K
33172
PZT2222A
R9
Q4
R31
10K
C17 10n
10K
49K9
BC817-25 C15 10n
R11 R12
10K
R27 49K9
R30
JU5
49K9
R26
49K9 C39
2.2nF
TL5
R39
1K
49K9
C25
150p
L2
0.18uH
D3
BYD17J
C10
10nF
LOW PASS
FILTER ASSEMBLY
C22 10n
R20
R24 1K TL2
10K
R22 49K9
C18
C21 10n
100n
R23 49K9
R19 49K9 C19 10n
D6
COMPONENT INSTALLED ON BOTTOM OF BOARD
C5
18nF
COMPONENT NOT INSTALLED
SELECT
C31
C33
COMPONENT MOUNTED ON CASE
C32
R17 SELECT SELECT
49R9
L8
19nH
C35
SELECT
R45
10R
NOTE Q1 MOUNTED ON CASE WITH LEADS
INSERTED TO BOTTOM OF BOARD
C34
SELECT
L9
150nH
R16
49R9
FB2
M3 x 8 CAP SOCK SCREW
L10
150nH
L11
19nH
C30
47uF
M3 x 8 SCREW
M3 x 6 CAP SOCK SCREW
C27
SELECT
C28
C37
1nF
4-2
FB3
100nF
SELECT C38
DANIELS
DE ELECTRONICS
M2.5 x 6 SCREW
MRF262
SELECT
C36
TL4
MMBD701
L6 R18 C20
1.5uH 49K9 150p
C6
4.7uF
MMBD701
150pF D5
C16
49R9
R15
DEFAULT JUMPER
TL1
R42 1K C23
10n R44 R32
R43 27K4
10K 10K
U3
MC
33172
MHW607
SELECT
150nH
R35 1K
VT-3/150
C3
18nF
C4
18nF
L4
49K9
R33
TL3
BC817-25
R40
L7
221K
1.5uH
R34
49K9
U2
MC
C24
C26 10n
33172
100n
L3
0.18uH
C2
18nF
FB1
C9
18nF
L5
1.5uH
R13
49K9
L1
0.18uH
C11
100nF C7
100nF
Q2
D5P06V
C1
1nF
R1
R3
178R
1nF C8
D2
1N5402
D4
BYD17J
30R1
178R
R2
C29
10nF
DANIELS
ELECTRONICS
VICTORIA B.C .
VT3AMPM1
VT-3/150
VT-3/150AMPLIFIER
AMPLIFIER
AMPLIFIERSM
TH
SMDESIGNATION
LAYOUT
DESIGNATION
LAYOUT
AND
(LOW
(LOW
(HIGH
DESIGNATION
(HIGH
(LOW
POWER)
(LOW
POWER)
POWER)
POWER)
POWER)
POWER)
(HIGH POWER)
TITLE: VT-3/150
DATE.:
DWG No:
MARCH 8, 1994
BOARD No.:
43-932611
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
9326AS2
9326AS1
9326AS3
9326AS4
9326A5
9326A6
DWG REV DATE:
4.2
VT-3/150 VHF Amplifier Schematic Diagram
+13.8 VDC
LOW / HIGH BAND
FIL5*
+13.8 VDC
LPF
+13.8 VDC
C1
1nF
R1
30R1
R2
178R
R3
178R
C4
18nF
C2
18nF
TO ALL SWITCHED +9.5V
FIL2
+9.5 VDC
LPF
R4
49k9
AMPLIFIER ENABLE I/P
C27
100nF
FB3*
L8
19nH
R45
10R
L4
150nH
L3
180nH
R15
49R9
TL2
Q7
MRF262
C33
68pF LB/51pF HB
C35
SELECT
LB = LOW BAND
HB = HIGH BAND
FB1
C8
1nF
C7
100nF
C9
18nF
Q1
IRF9540
C10
10nF
R7
50k
D5
MMBD701
C12
10nF
C39
2.2 nF
R8
3k48
FORWARD
POWER
ALARM
FIL3
R9
10k0
C19
10nF
U3b
MC33172
R31
10k0
LPF
L5
1.5uH
R13
49k9
R12
49k9
U1a
Q4
BC817-25
C16
150pF
R25
1k00
R22
49k9
U1b
MC33172
RF OUT
D7
MMBD701
R19
49k9
R21
50k
R28
27k4
J2
TYPE N JACK
TL5
C21
10nF
R29
10k0
Q3
PZT2222A
L6
1.5uH
C17
10nF
R30
49k9
JU2
C18
100nF
C14
10nF
Power Range Selection
C11
100nF
TL3
R18
49k9
R26
49k9
R27
49k9
SWITCHED +9.5V
C13
100nF
OUTPUT
POWER
ADJUST
SWITCHED +9.5V
Q2
D5P06V
SWITCHED +9.5V
R6
SEL
SWITCHED +9.5V
R10
10k0
C20
150pF
R17
49R9
R24
1k00
D4
BYD17J
R5
4k53
D6
MMBD701
JU1
L2
180nH
D3
BYD17J
POWER
R16
49R9
TP2
D2
IN5402
D1
MBZ5233B
C37
47pF LB/36pF HB
L9
150nH
FB2
C6
4.7uF
C29
1nF
C38
56pF LB/220pF HB
C36
47pF LB/43pF HB
C32
5.6pF LB
C5
18nF
C28
10nF
L11
19nH
C34
20pF LB
LPF
27k4
392k
TP1
C3
18nF
L1
180nH
FIL1
R6
C31
51pF LB/24pF HB
TL1
MHW 607
RF IN (1 mW)
L10
150nH
U4
MHW607
J1
SMB
C30
47uF
LPF
R20
10k0
FORWARD
OUTPUT ALARM
ADJUST
C25
150pF
SWITCHED +9.5V
C15
10nF
JU5
R11
10k0
2 - 8 Watts
2 - 5 Watts
TP3
R32
10k0
R14
10k0
VSWR
ALARM
FIL4
JU3
LPF
C23
10nF
R23
49k9
Q5
PZT2222A
TP4
L7
1.5uH
U2b
MC33172
R44
10k0
R33
49k9
C24
100nF
C22
10nF
U3a
R42
1k00
R34
49k9
C26
10nF
R43
27k4
JU4
R38
1k00
R36
50k
TP5
OVERLOAD
R41
10k0
U2a
VSWR
OUTPUT ALARM
ADJUST
OVERLOAD
ADJUST
Q6
BC817-25
R35
1k00
R37
50k
R39
1k00
R40
221k
HIGHEST REFERENCE DESIGNATORS
C39
D7
FB3, FIL5
J2, JU5
L11
Q7
R45
TL5, TP5
U4
UNUSED REFERENCE DESIGNATORS
-----
-----
-----
-----
-----
-----
-----
-----
-----
DE
TITLE:
DANIELS
ELECTRONICS
VICTORIA B.C.
VT-3/150 VHF AMPLIFIER SCHEMATIC DIAGRAM
DATE:
4 MARCH 1994
DWG No: VT3AMPM2A
BOARD No: 43-932611
DWN BY: REX WONG
APRVD:
DWG REV DATE: 10 DECEMBER 1995
BOARD REV:
1.1
DANIELS
DE ELECTRONICS
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
4-3
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-4
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
4.3
VT-3/150 VHF Lowpass Filter Component Layout
invisible text
4.4
VT-3/150 VHF Lowpass Filter Schematic Diagram
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
4-5
This Page Intentionally Left Blank
4-6
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
5
PARTS LISTS
5.1
VT-3/150 Amplifier Electrical Parts List
Ref
Desig
Description
Part No.
C1
C2-C5
C6
C7
C8
C9
C10
C11
C12
C13
C14, C15
C16
C17
C18
C19
C20
C21-C23
C24
C25
C26
C27
C28
C29
C30
C31
C31
C32
C32
C33
C33
C34
C34
C35
C35
C36
C36
C37
C37
C38
C38
C39
CAP., SM, 1nF CER, 1206, C0G
CAP., SM, 18nF CER, 1206, X7R
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 1nF CER, 1206, C0G
CAP., SM, 18nF CER, 1206, X7R
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 150pF CER, 1206, C0G
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 150pF CER, 1206, C0G
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 150pF CER, 1206, C0G
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 100nF CER, 1206, X7R
CAP., SM, 10nF CER, 1206, X7R
CAP., SM, 1nF CER, 1206, C0G
CAP., 47µF DIP. TANT., 20%, 35V
CAP.,SM, 51pF PORCEL., 5% 500V
CAP.,SM, 24pF PORCEL., 5% 500V
CAP.,SM, 5.6pF PORCEL., ±0.25pF 500V
CAP.,SM, NOT INSTALLED
CAP.,SM, 68pF PORCEL., 5% 500V
CAP.,SM, 51pF PORCEL., 5% 500V
CAP.,SM, 20pF PORCEL., 5% 500V
CAP.,SM, NOT INSTALLED
CAP., 330pF METAL CLAD,1% 250V
CAP., 270pF METAL CLAD, 1% 250V
CAP.,SM, 47pF PORCEL., 5% 500V
CAP.,SM, 43pF PORCEL., 5% 500V
CAP.,SM, 47pF PORCEL., 5% 500V
CAP.,SM, 36pF PORCEL., 5% 500V
CAP.,SM, 56pF PORCEL., 5% 500V
CAP.,SM, 220pF PORCEL., 5% 200V
CAP., 2.2nF FILM, MMK5,10%,63V
1008-3B102K1G
1008-4B183K5R
1055-5B475K16
1008-5B104K5R
1008-3B102K1G
1008-4B183K5R
1008-4B103K5R
1008-5B104K5R
1008-4B103K5R
1008-5B104K5R
1008-4B103K5R
1008-2B151J1G
1008-4B103K5R
1008-5B104K5R
1008-4B103K5R
1008-2B151J1G
1008-4B103K5R
1008-5B104K5R
1008-2B151J1G
1008-4B103K5R
1008-5B104K5R
1008-4B103K5R
1008-3B102K1G
1054-6M476M35
1036-1B2510J5
1036-1B2240J5
1036-0B2569C5
NOT INSTALLED
1036-1B2680J5
1036-1B2510J5
1036-1B2200J5
NOT INSTALLED
1046-2A331FDB
1046-2A27TFDB
1036-1B2470J5
1036-1B2430J5
1036-1B2470J5
1036-1B2360J5
1036-1B2560J5
1036-2B2221J2
1016-3A222K63
D1
D2
D3, D4
D5
D6, D7
DIODE, MBZ5233B 6.0V ZENER, SOT-23
DIODE, IN5402 3A RECT, DO-201AD
DIODE, BYD17J RECTIFIER, SOD-87
DIODE, MMBD701 HOT CARRIER, SOT-23
DIODE, MMBD701 HOT CARRIER, SOT-23
2102-MBZ5233B
2001-1N540200
2101-BYD17J00
2105-MMBD7010
2105-MMBD7010
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
(132 - 150
(150 - 174
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
MHz)
5-1
Ref
Desig
Description
Part No.
FB1
FB2, FB3
FIL1-FIL5
FERRITE BEAD, SM, 43 MIX 1812 PKG
FERRITE BEAD, 64MIX 3X3.5mm OD
FILTER, EMI PI/5500pF, 8-32 UNC
1213-43181200
1210-64030350
1302-P552D10D
J1
J2
CONNECTOR, SMB, JACK,2 HOLE FLANGE
CONNECTOR, N JACK PANEL MNT, C/SNK
5120-J2SC01BG
5184-10923011
L1-L3
L4
L5
L6, L7
L8
L9
L10
L11
LPF1
INDUCTOR, SM., 180nH 20%, 1812
CHOKE, RF/MOULD., 150nH 10%, .37
INDUCTOR, SM, 1.5µH 10%, 1812
INDUCTOR, SM, 1.5µH 10%, 1812
COIL, 1.5 TURNS, 18AWG, 3.83mmID
CHOKE, RF/MOULD., 150nH 10%, .25
CHOKE, RF/MOULD., 150nH 10%, .37
COIL, 1.5 TURNS, 18AWG, 3.83mmID
LPF, ASSEMBLY VT-3/150 AMPLIFIER
1255-2GR1800M
1251-2B00R15K
1255-3G1R500K
1255-3G1R500K
1220-1T501812
1251-2A00R15K
1251-2B00R15K
1220-1T501812
A21-LPF3/150
PCB
PCB, VT-3/150 TX AMPLIFIER
4321-15932611
Q1
Q2
Q3
Q4
Q5
Q6
Q7
MOSFET, IRF9540 P-CHANNEL, TO-220
MOSFET, D5P06V P-CHAN., DPAK
TRANSISTOR, PZT2222A NPN, SOT-223
TRANSISTOR, BC817-25 NPN, SOT-23
TRANSISTOR, PZT2222A NPN, SOT-223
TRANSISTOR, BC817-25 NPN, SOT-23
TRANSISTOR, MRF262 VHF, TO-220
2044-IRF95400
2144-D5P06V00
2120-PZT2222A
2120-BC817025
2120-PZT2222A
2120-BC817025
2025-MRF26200
R1
R2, R3
R4
R5
R6
R6
R7
R8
R9-R11
R12, R13
R14
R15-R17
R18, R19
R20
R21
R22, R23
R24, R25
R26, R27
R28
R29
R30
R31, R32
R33, R34
R35
R36, R37
RES., SM, 30R1 1206, 1%,100ppm
RES., SM, 178R 1206, 1%,100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 4k53 1206, 1%, 100ppm
RES., SM, 27k4 1206, 1%, 100ppm
RES., SM, 392k 1206, 1%, 100ppm
POT., SM, 50k 12 TURN, SIDE ADJUST
RES., SM, 3k48 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., SM, 49R9 1206, 1%, 100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
POT., SM, 50k 12 TURN, SIDE ADJUST
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 1k00 1206, 1%, 100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 27k4 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., SM, 49k9 1206, 1%, 100ppm
RES., SM, 1k00 1206, 1%, 100ppm
POT., SM, 50k 12 TURN, SIDE ADJUST
1150-1B30R1FP
1150-2B1780FP
1150-4B4992FP
1150-3B4531FP
1150-4B2742FP
1150-4B3922FP
1172-M30503X5
1150-3B3481FP
1150-4B1002FP
1150-4B4992FP
1150-4B1002FP
1150-1B49R9FP
1150-4B4992FP
1150-4B1002FP
1172-M30503X5
1150-4B4992FP
1150-3B1001FP
1150-4B4992FP
1150-4B2742FP
1150-4B1002FP
1150-4B4992FP
1150-4B1002FP
1150-4B4992FP
1150-3B1001FP
1172-M30503X5
5-2
(Default)
(Exciter for VT-30)
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
Ref
Desig
Description
Part No.
R38, R39
R40
R41
R42
R43
R44
R45
RES., SM, 1k00 1206, 1%, 100ppm
RES., SM, 221k 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., SM, 1k00 1206, 1%, 100ppm
RES., SM, 27k4 1206, 1%, 100ppm
RES., SM, 10k0 1206, 1%, 100ppm
RES., 10R METAL FILM, 5%, 0.5W
1150-3B1001FP
1150-5B2213FP
1150-4B1002FP
1150-3B1001FP
1150-4B2742FP
1150-4B1002FP
1101-1A0100JP
TL1
TL2, TL3
TL5
COAX, DIRECTIONAL COUPLER 0.5"
COAX, DIRECTIONAL COUPLER 0.5"
COAX, CONFORMABLE 31.5mm, 50 OHM, 0.083
7496-30CR005T
7496-30CR005T
7482-5024T083
U1-U3
U4
U4
I.C., MC33172 DUAL OP AMP, S0-8
AMP, RF,MHW607-1,7W,136-154MHz
AMP, RF,MHW607-2,7W,146-174MHz
2302-33172N08
2256-MHW60701
2256-MHW60702
5.2
VT-3/150 Low Pass Filter Electrical Parts List
Ref
Desig
Description
Part No.
C1
C2-C4
C5
CAP., SM, 30pF PORCEL., 5%, 500V
CAP., SM, 47pF PORCEL., 5%, 500V
CAP., SM, 30pF PORCEL., 5%, 500V
1036-1B2300J5
1036-1B2470J5
1036-1B2300J5
L1
L2, L3
L4
COIL, 55nH 3.0 TURNS, 18AWG, 6.70mm ID
COIL, 60nH 3.0 TURNS, 18AWG, 6.70mm ID
COIL, 55nH 3.0 TURNS, 18AWG, 6.70mm ID
1220-3T001822
1220-3T001822
1220-3T001822
PCB
PCB, LPF VT-3/150, UT-3/400 AMP
4321-16931712
5.3
VT-3/150 Amplifier Mechanical Parts List
Description
Part No. Qty.
CASE, MT-3 VHF/UHF AMPLIFIER, ALUMINUM
3702-66102130
HEATSHRINK, 1/8" DIA, RED, 1" LENGTH
CONSUMABLE
INSULATOR, THERM. COND. TO-220
5622-1T220701
LABEL, MTL/PE, VT-3/150 AMP ID
LID, CASE MT-3 AMPLIFIER, ALUMINUM
3508-21002010
3702-66102151
SCREW, M2 X 6, PAN/PHILLIPS,A2
SCREW, M2 X 4, PAN/PHIL., S/S
SCREW, M2.5 X 6, PAN/PHIL., S/S
SCREW, M3 X 6, FLAT/PHIL., S/S
SCREW, M3 X 8, PAN/PHIL., S/S
5812-2M0PP06S
5812-2M0PP04S
5812-2M5PP06S
5812-3M0FP06S
5812-3M0PP08S
10
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
(132 - 150 MHz)
(150 - 174 MHz)
5-3
Description
Part No. Qty.
SCREW, M3 X 8, CAP SOCK-M2.5, S/S
SCREW, M3 X 8, CAP SOCK-M2.5, S/S
SET SCREW, M3 X 3, HEX SOCKET, A2
SHOULDER WASHER, M3 0.24" OD, NYLON
5812-3M0SA08S
5812-3M0SA08S
5817-3M0AC03S
5674-120N2440
TUBING, TFE-260C, 22AWG,Thin 5mm
TURRET TERMINAL, 4-40 0.188L, Tn
7610-260C22TW
5053-144M188T
WIRE, PVC/STRANDED 16AWG, RED, 70 mm
7110-16S26302
5-4
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
6
REVISION HISTORY
ISSUE
DATE
REVISION
Jul 97
First Issue.
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
6-1
ISSUE
6-2
DATE
REVISION
VHF Amplifier Instruction Manual VT-3 132 - 174 MHz
MT-3 RADIO SYSTEMS
ENHANCED AM/FM
SYNTHESIZER
INSTRUCTION MANUAL
OS(R/T)-3(A/H) 29 - 470 MHz
Covers models:
OST-3H035, OST-3H045, OSR-3H061
OST-3A128, OSR-3A149
OST-3H141, OST-3H162, OSR-3H141, OSR-3H162
OST-3H440, OSR-3H440
Copyright © 2000 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise, without the prior written consent of Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent and Trademark Office.
Issue:
Issue Date:
Printing Date:
Part No.:
September 2000
January 2001
IM10-OS3AH
Previous Issue:
Previous Issue Date: March 2000
Daniels Electronics Ltd.
Victoria, BC.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous development.
The equipment covered by this manual may incorporate minor changes in detail
from the information contained in this manual.
ii
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
TABLE OF CONTENTS
Page
GENERAL...................................................................................................................1-1
1.1
Introduction ....................................................................................................1-1
1.2
OS(R/T)-3(A/H) Enhanced Synthesizer Family Models ................................1-1
1.3
Performance Specifications.............................................................................1-3
1.4
Printed Circuit Board Numbering Convention................................................1-5
THEORY OF OPERATION........................................................................................2-1
2.1
Internal Power and Control (Digital Board)....................................................2-1
2.2
Synthesizer Analog Circuitry (Analog Board) ................................................2-1
2.2.1
Common Analog Board Circuitry.......................................................2-1
2.2.2
29 - 71.4 MHz Analog Board Circuitry..............................................2-3
2.2.3
118 - 159.4 MHz Multichannel AM Analog Board Circuitry.............2-3
2.2.4
128 - 174 MHz Analog Board Circuitry.............................................2-4
2.2.5
406 - 470 MHz Analog Board Circuitry.............................................2-5
2.3
Synthesizer Digital Circuitry (Digital Board)..................................................2-6
2.4
Frequency Control..........................................................................................2-6
2.4.1
BCD Switch Frequency Control.........................................................2-6
2.4.2
Frequency Select Handle Frequency Control......................................2-7
2.5
Synthesizer Base and Frequency Increment Table..........................................2-7
2.6
5.0/6.25 kHz Channelization...........................................................................2-8
2.7
8.333 kHz Channelization...............................................................................2-8
2.8
12.5 kHz Channelization.................................................................................2-9
SYNTHESIZER ALIGNMENT..................................................................................3-1
3.1
General...........................................................................................................3-1
3.2
Repair Note.....................................................................................................3-1
3.3
Recommended Test Equipment.......................................................................3-1
3.4
OS(R/T)-3(A/H) Synthesizer Factory Configuration......................................3-1
3.5
OS(R/T)-3(A/H) Synthesizer Alignment ........................................................3-2
3.5.1
General...............................................................................................3-2
3.5.2
Synthesizer Test Points.......................................................................3-2
3.5.3
Synthesizer Removal and Installation..................................................3-3
3.5.4
Circuit Board Removal........................................................................3-3
3.5.5
Frequency Adjustment and Channel Selection....................................3-3
3.5.5.1
VHF OS(R/T)-3H 29 - 71.4 MHz VCO Alignment...............3-4
3.5.5.2
VHF OS(R/T)-3A 118 - 159.4 MHz Alignment.....................3-5
3.5.5.3
VHF OS(R/T)-3H 128 - 174 MHz VCO Alignment..............3-5
3.5.5.4
UHF OS(R/T)-3H 406 - 470 MHz VCO Alignment..............3-6
3.5.5.5
Reference Frequency Alignment.............................................3-6
3.5.6
Jumper Configuration.........................................................................3-7
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
iii
4
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS ..............................................4-1
4.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Diagrams ...................................4-1
4.1.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Bottom)4-1
4.1.2
OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Top) 4-2
4.1.3
OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram........4-3
4.2
OS(R/T)-3A 118 - 159.4 MHz Analog Board Diagrams................................4-5
4.2.1
OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Bottom)
4-5
4.2.2
OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Top)4-6
4.2.3
OS(R/T)-3A 118 - 159.4 MHz Analog Board Schematic Diagram....4-7
4.3
OS(R/T)-3H 128 - 174 MHz Analog Board Diagrams ..................................4-9
4.3.1
OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Bottom)49
4.3.2
OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Top)4-10
4.3.3
OS(R/T)-3H 128 - 174 MHz Analog Board Schematic Diagram.......4-11
4.4
OS(R/T)-3H 406 - 470 MHz Analog Board Diagrams ..................................4-13
4.4.1
OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Bottom)413
4.4.2
OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Top)4-14
4.4.3
OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram.......4-15
4.5
OS(R/T)-3(A/H) Digital Board Diagrams ......................................................4-17
4.5.1
OS(R/T)-3(A/H) Digital Board Component Layout (Bottom)............4-17
4.5.2
OS(R/T)-3(A/H) Digital Board Component Layout (Top) .................4-18
4.5.3
OS(R/T)-3(A/H) Digital Board Schematic Diagram...........................4-19
PARTS LISTS .............................................................................................................5-1
5.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Electrical Parts List ....................5-1
5.2
OS(R/T)-3A 118 - 159.4 MHz Analog Board Electrical Parts List.................5-5
5.3
OS(R/T)-3H 128 - 174 MHz Analog Board Electrical Parts List ...................5-8
5.4
OS(R/T)-3H 406 - 470 MHz Analog Board Electrical Parts List ...................5-11
5.5
OS(R/T)-3(A/H) Digital Board Electrical Parts List .......................................5-14
5.6
OS(R/T)-3(A/H) Synthesizer Mechanical Parts List.......................................5-15
REVISION HISTORY.................................................................................................1
iv
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
1.
GENERAL
This is hidden text.
1.1
Introduction
The OS-3A/H Synthesizer is a compact, fully shielded and environmentally rugged frequency
synthesis module that is the nucleus of every MT-3 synthesized Receiver and Transmitter radio
module. The OS-3A/H generates a high stability, low distortion radio frequency signal in one of
several frequency bands, including 29 - 50 MHz, 118 - 159.4 MHz, 118 - 174 MHz and
406 - 470 MHz. The OS-3A/H utilizes an internal temperature compensated 9.6 MHz reference to
produce a signal stable to ±1 ppm within the temperature range of -40°C to +60°C. Alternately, the
OS-3A/H can be disciplined by an external 9.6 MHz or 10 MHz reference of higher stability. The
OS-3A/H Synthesizer Module is manufactured in twelve distinct models which cover three primary
frequency bands (see section 1.2 below). All synthesizer modules are designed to be easily
removed for programming, calibration and/or repair. The synthesizer circuitry is distributed
between two printed circuit boards (PCBs) which are isolated yet interconnected via photo-logic
optical transceivers that effectively eliminate residual electrical noise between digital and analog
circuitry. Further shielding of the synthesizer’s RF filter circuitry is provided by an internal
shielded enclosure.
1.2
OS(R/T)-3(A/H) Enhanced Synthesizer Family Models
The OS-3A/H Synthesizer Module is utilized in both the MT-3 Receiver and Transmitter product
lines. In MT-3 Transmitters, the OS-3A/H synthesizer provides a modulated, low-level RF signal
to the Power Amplifier module. In MT-3 Receivers, the OS-3A/H synthesizer provides a low noise
local oscillator (LO) signal that either directly drives the mixer circuitry or first drives a buffer
amplifier which precedes the mixer circuitry (if a higher LO drive signal is required for enhanced
intermodulation capability). There are twelve distinct models within the OS-3A/H Enhanced
Synthesizer Family. Note that this manual provides service and operating information for all twelve
synthesizer modules. It is extremely important to establish the correct synthesizer model number,
as documentation is model-specific. The model number can be found on the synthesizer label,
located on the synthesizer module top cover.
The twelve synthesizer models that comprise the OS-3A/H Synthesizer family are follows:
Frequency Band: 29 - 50 MHz, Common OS-3H0xx Analog Board
• OST-3H035
• OST-3H045
• OSR-3H061
- installed in FM transmitter, 29 - 38 MHz RF output.
- installed in FM transmitter, 38 - 50 MHz RF output.
- installed in FM receiver, 50.4 - 71.4 MHz RF output.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
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Frequency Band: 118 - 159.4 MHz, AM Multichannel OS-3H1xx Analog Board
• OST-3A128
• OSR-3A149
- installed in AM transmitter, 118 - 138 MHz RF output.
- installed in AM receiver, 139.4 - 159.4 MHz RF output.
Frequency Band: 128 - 174 MHz, Common OS-3H1xx Analog Board
• OST-3H141
• OST-3H162
• OSR-3H141
• OSR-3H162
- installed in FM
- installed in FM
- installed in FM
- installed in FM
transmitter, 128 - 152.6 MHz RF output.
transmitter, 150 - 174 MHz RF output.
receiver, 128 - 152.6 MHz RF output.
receiver, 150 - 174 MHz RF output.
Frequency Band: 406 - 470 MHz, Common OS-3H4xx Analog Board
• OST-3H418
• OST-3H460
• OSR-3H440
- installed in FM transmitter, 406 - 430 MHz RF output.
- installed in FM transmitter, 450 - 470 MHz RF output
- installed in FM receiver, 427.4 - 451.4 MHz RF output.
All OS-3A/H Enhanced Synthesizer Modules, regardless of the frequency band, use the same
digital PCB and mechanical construction. There are, however, significant differences between the
various models when it comes to the analog PCB. There are four different analog PCBs, designed
to cover the four frequency bands of 29 - 50 MHz, 118 - 159.4 MHz, 128 - 174 MHz and
406 - 470 MHz. Each model’s specific sub-band of operation within a given frequency band is
determined through SELECT components on the corresponding analog board.
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1.3
Performance Specifications
Type: Narrow band FM, Single loop synthesizer module utilizing low noise VCO and PLL technology.
Compatible with Daniels MT-3 series Transmitter and Receiver modules.
Frequency Range:
29 MHz - 38 MHz [±0.5 MHz] (OST-3H035)
(Tuning range with no adjustment
38 MHz - 50 MHz [±1.0 MHz] (OST-3H045)
is shown in [ ] brackets.)
50.4 MHz - 71.4 MHz [±1.0 MHz] (OSR-3H061)
118 MHz -138 MHz [Full band] (OST-3A128)
128 MHz - 152.6 MHz [±2.0 MHz] (OST-3H141, OSR-3H141)
139.4 MHz - 159.4 MHz [Full band] (OSR-3A149)
150 MHz - 174 MHz [±2.0 MHz] (OST-3H162, OSR-3H162)
406 MHz - 430 MHz [Full band] (OST-3H418)
427.4 MHz - 451.4 MHz [Full band] (OSR-3H440)
450 MHz - 470 MHz [Full band] (OST-3H460)
Output Power: +5 dBm ±2 dBm into 50Ω
Harmonics:
<-30 dBc
Spurious:
<-90 dBc
<-70 dBc above 400 MHz
Attack Time:
<10 ms (Normal Mode)
<50 ms (Low Current Standby Mode)
Hum and Noise:
-55 dB
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Modulation Sensitivity:
3.0 kHz peak deviation (400 mVrms input)
External Reference Input:
External reference input signal via SMB connector J1
Input level 0 dBm ±3 dB
Input impedance 50Ω
Input frequency 10.0 MHz or 9.6 MHz (selectable through
digital board jumper JU1)
Power Requirements:
Normal Configuration:
+9.5 Vdc @ 160 mA for FM and 65 mA for AM
Low Current Standby Mode (TCXO enabled):
+9.5 Vdc @ 14 mA for FM and 4 mA for AM
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Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
1.4
Printed Circuit Board Numbering Convention
To expedite troubleshooting and maintenance procedures, Daniels Electronics Ltd. has adopted a
printed circuit board (PCB) numbering convention in which the last two digits of the circuit board
number represent the circuit board version. All PCB's manufactured by Daniels Electronics Ltd.
are identified by one of the following numbering conventions:
•
•
PCB number
PCB number
43-912010
50002-02
indicates circuit board version 1.0; or
indicates circuit board version 2.0
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2.
THEORY OF OPERATION
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2.1
Internal Power and Control (Digital Board)
Refer to "OS(R/T)-3(A/H) Digital Board Schematic Diagram" on page 4-19 of this manual. The
synthesizer operates from a +9.5 Vdc power source applied to connector pin P1-2. Total current
draw is approximately 160 mA for FM synthesizers and 65 mA for AM synthesizers. POWER
DOWN control line P2-4 controls the +5.0 Vdc microcontroller regulator U2 through power
MOSFET switch U1. For receiver applications the synthesizer is always ON, with the enable line
P2-4 directly connected to +9.5 Vdc. For transmitter applications, pin P2-4 is controlled by MT-3
Transmitter Board jumper J18 which selects the synthesizer standby mode. In Low Current
Standby Mode, less than 14 mA current is drawn (for FM, < 4 mA for AM) however, a delay of
approximately 50 ms from PTT activation to transmitter turn is then required to allow for
synthesizer lock time. In Normal Mode, with the synthesizer ON continuously, less than 10 ms
delay is encountered. This capability comes at the expense of additional standby current (160 mA
for FM, 65 mA for AM).
2.2
Synthesizer Analog Circuitry (Analog Board)
There are four separate analog circuit boards covering the four frequency bands of 29 - 50 MHz,
118 - 159.4 MHz, 128 - 174 MHz and 406 - 470 MHz respectively. All four analog boards are
similar in operation and circuit topology with the VCO, Loop Filter and Output Low-pass Filter
sections being band specific.
2.2.1
Common Analog Board Circuitry
This section describes the circuitry common to all versions of the FM Synthesizer Analog Board.
The Analog Board utilizes four optical receivers (U1 - U4) and one optical transmitter (U5) to
provide an isolated data interface to the digital board. In normal operating modes, +9.5 Vdc
Regulator IC U8 provides continuous +5.0 Vdc to the internal TCXO and power control optical
receiver U1. This results in a standby current level of ≈ 14 mA for FM and 4 mA for AM.
Primary power is controlled through activation of optical receiver U1 under control of the digital
board micro controller U4. Regulator U6 provides switched +8.0 Vdc with regulator U7 providing
switched +5.0 Vdc to all analog supply points. Power MOSFET IC U9 works as a clamping
circuit to quickly discharge VCO filter capacitors C32 and C33 when powered down, resulting in
immediate suppression of RF output from the VCO.
The heart of the OS-3A/H Enhanced Synthesizer is U10 - a low power, single chip synthesizer IC.
A 9.6 MHz reference signal is provided either from the internal TCXO (JU1-B Analog Board) or
from an external source via SMB connector J1 with jumper JU1-A (Analog Board) and jumper
JU2 (AM Analog Board only) installed. The external reference source may be 9.6 MHz or
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
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10.0 MHz and is selected via jumper JU2 on the Digital Board (9.6 MHz with JU2 not installed,
10.0 MHz with JU2 installed). If an external signal is used as the reference source, it must be a
sinusoidal, low phase noise, high stability signal of 0 dBm ±3 dB level. A poor quality reference
source will degrade receiver /transmitter performance to unacceptable levels. Transistor Q2 forms a
buffer amplifier having 50Ω input impedance at 10.0 MHz. The internal 9.6 MHz TCXO provides
better than ±1 ppm frequency stability from -30°C to +60°C (-40°C to +60°C optional). Fine
frequency adjustment is made through frequency control potentiometer RV1, which is accessible
through the synthesizer top cover.
The 9.6 MHz reference source is divided down to establish a channel selection step size of 5.0/6.25,
12.5, or 25.0 kHz depending on the particular synthesizer model type. A third order passive loop
filter comprised of C37, C38, C39, C45, C49, R36 and R32 is employed to achieve the required
noise performance, modulation and worst case switching time of 50 ms. A small sample of RF
energy is coupled from the VCO output buffer U16 on the FM analog board or from Q6 on the
AM analog board to the synthesizer IC U10 prescaler input (pin 11). FM modulation of the VCO
from ≈ 100 Hz to 3 kHz is achieved through the baseband input pin P1-1 on the Digital Board. A
1 kHz sine wave with a level of approximately 400 mVrms at P1-1 provides FM deviation of
3.0 kHz. SMB connector J2 provides an RF output level of approximately +5 dBm into a 50Ω
load.
An optional modulation input is provided through connector P1-18 (Digital Board) and routed to
the Analog board via connector P3. This connection must be coupled to a low impedance, dc
coupled source and provides a phase modulated bandwidth from 0 Hz (DC) to ≈ 50 Hz (PLL loop
filter bandwidth) allowing for specialized applications such as paging or trunking where a separate
low frequency digital/analog modulation channel is required. Phase modulation input pin P1-18 is
routed to the transmitter audio processor spare pin P4-2 via JA4-2 on the MT-3 transmitter main
board. It should be noted that any application of the direct TCXO modulation port transfers control
of the synthesizer steady state frequency setting to the external modulating source. Frequency
control potentiometer RV1 is then effectively removed from the frequency adjust circuitry.
A lock detect LED (LED1) indicates an unlocked PLL condition. An unlocked PLL condition
normally indicates that the VCO is not tuned within the lock-in range of the desired channel
frequency. In a transmitter, the loss of lock will prevent PTT from keying the power amplifier
module, thus preventing transmission of a spurious output signal. Adjustment of tuning capacitor
C24 will normally reestablish frequency lock within the synthesizer’s frequency range. Optical
transmitter U5 is additionally activated in unlocked conditions and enables the micro-controller
(Digital Board) to respond to the unlocked PLL condition. Note that the 118 - 159.4 MHz and the
406 - 470 MHz Analog Boards do not incorporate a VCO tuning capacitor; the VCO covers the full
frequency range without tuning. An unlocked condition in either of these synthesizers would
indicate an attempt to synthesize an invalid channel frequency outside the installed VCO frequency
range.
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2.2.2
29 - 71.4 MHz Analog Board Circuitry
Refer to the "OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram" on page 4-3 of this
manual.
Field effect transistor Q5 forms part of the negative resistance VHF amplifier oscillator that is tuned
on-frequency by the combination of resonator L5 and the total capacitive reactance presented across
L5 through capacitors C62, C63, C64, C23 (Select), variable capacitor C24 and varactor diodes D1
and D2. Fine frequency adjustment is obtained via multi-turn trimmer capacitor C24 in conjunction
with coarse frequency jumper selections JU2, JU3 and JU4. Select capacitor values are chosen to
position the operating frequency in one of three bands: 29 - 38 MHz, 38 - 50 MHz or
50.4 - 71.4 MHz. Varactor diodes D1 and D2 provide oscillator frequency control. PLL feedback
control voltage, at the output of the low-pass loop filter, controls the VCO frequency through the
reverse biasing of varactor diodes D1 and D2. The PLL control voltage can range between ≈
+1.0 Vdc and +7.0 Vdc and is nominally set to ≈ +4.5 Vdc at the synthesizer centre frequency.
Setting of the PLL control voltage set point (TP4) is achieved by adjusting fine frequency variable
capacitor C24 combined with binary weighted lumped capacitor coarse frequency jumpers (JU2,
JU3, JU4). External baseband frequency modulation is provided through connection P1 and a
voltage divider network formed by R21 and R22. A large signal division ratio, established by the
resistive dividers R21 and R22, allows low deviation (less than 5 kHz) direct frequency modulation
of the VCO output signal.
The PLL low-pass filter is formed by SELECT components C37, C38, C39, C45, R32 and R36.
The loop filter response is optimized for switching time, noise and modulation requirements
specific to each sub-band within the 29 - 71.4 MHz frequency range. The SELECT components
(including the loop filter) can be found in tabular format on the VHF OS-3H 29 - 71.4 MHz
Analog Board Schematic diagram.
RF output power is taken from the source of Q5 and amplified/buffered by U11. U15 provides
further amplification and isolation while delivering ≈ +10 dBm into a six-pole low-pass/notch
output filter formed by C53, C57, C58, C59, L11 and L13. The six pole output filter, with a cutoff
frequency of 50 MHz (OST-3H035, OST-3H045 TX) or 80 MHz (OSR-3H061 RX) effectively
eliminates output harmonics. SMB connector J2 provides interconnection to the companion
transmitter or receiver with an output level of ≈ +5 dBm.
2.2.3
118 - 159.4 MHz Multichannel AM Analog Board Circuitry
Refer to the "OS(R/T)-3H 118 - 159.4 MHz Analog Board Schematic Diagram" on page 4-7 of
this manual.
Field effect transistor Q5 forms part of the negative resistance VHF amplifier oscillator that is tuned
on-frequency by the combination of resonator L5 and the total capacitive reactance presented across
L5 through capacitors C40 and/or C23 (SELECT), varactor diodes D6, D7 and varactor diodes D1
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2-3
and D2. Coarse frequency adjustment is provided by varactor diodes D6, D7. SELECT capacitor
values C40 and/or C23 are chosen to position the operating frequency in one of two bands;
118 - 138 MHz or 139.4 - 159.4.MHz. Varactor diodes D1 and D2 provide fine oscillator
frequency control. PLL feedback control voltage, at the output of the low-pass loop filter, controls
the VCO frequency through the reverse biasing of diodes D1 and D2. The PLL control voltage can
range between ≈ +1.0 Vdc and +4.7 Vdc and is nominally set to ≈ +3.3 Vdc for all synthesizer
frequencies. Setting of the PLL control voltage set point (TP4) is achieved by adjusting the
capacitance of varactor diodes D6 and D7, which are controlled by microcontroller U18 through
digital-to-analog converter U17. Microcontroller U18 controls the output of the PLL Low-pass
Filter and adjusts the output voltage of the D/A converter so that PLL control voltage set point
(TP4) is approximately 3.3Vdc at all synthesizer frequencies. The microcontroller then goes to
sleep in a low-power mode.
The PLL low-pass filter is formed by SELECT components C37, C38, C39, C45, R32 and R36.
The loop filter response is optimized for switching time, noise and modulation requirements
specific to each sub-band within the 118 - 159.4 MHz frequency range. SELECT components
(including the loop filter) can be found in tabular format on the VHF OS(R/T)-3(A/H)
118 - 159.4 MHz Analog Board Schematic diagram.
RF output power is taken from the source of Q5 and amplified/buffered by Q6. U11 provides
further amplification and isolation while delivering ≈ +10 dBm into a five-pole low-pass output
filter formed by C53, C58, C59, L11 and L12. The five-pole low-pass output filter, with a cutoff
frequency of 190 MHz, effectively eliminates output harmonics. SMB connector J2 provides
interconnection to the companion transmitter or receiver with an output level of ≈ +5 dBm.
2.2.4
128 - 174 MHz Analog Board Circuitry
Refer to the "OS(R/T)-3(A/H) 128 - 174 MHz Analog Board Schematic Diagram" on page 4-11 of
this manual.
Field effect transistor Q5 forms part of the negative resistance VHF amplifier oscillator that is tuned
on-frequency by the combination of resonator L5 and the total capacitive reactance presented across
L5 through capacitors C40 and/or C23 (SELECT), variable capacitor C24 and varactor diodes D1
and D2. Fine frequency adjustment is obtained via multi-turn trimmer capacitor C24. SELECT
capacitor values C40 and/or C23 are chosen to position the operating frequency in one of two
bands; 128 - 152.6 MHz or 150 - 174 MHz. Varactor diodes D1 and D2 provide oscillator
frequency control. PLL feedback control voltage, at the output of the low-pass loop filter, controls
the VCO frequency through the reverse biasing of diodes D1 and D2. The PLL control voltage can
range between ≈ +1.0 Vdc to +7.0 Vdc and is nominally set to ≈ +4.5 Vdc at the synthesizer centre
frequency. Setting of the PLL control voltage set point (TP4) is achieved by adjusting fine
frequency variable capacitor C24. External baseband frequency modulation is provided through
connector P1 and a voltage divider network formed by R21 and R22. A large signal division ratio,
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Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
established by the resistive dividers R21 and R22, allows low deviation (less than 5 kHz) direct
frequency modulation of the VCO output signal.
The PLL low-pass filter is formed by SELECT components C37, C38, C39, C45, R32 and R36.
The loop filter response is optimized for switching time, noise and modulation requirements
specific to each sub-band within the 128 - 174 MHz frequency range. The SELECT components
(including the loop filter) can be found in tabular format on the VHF OS(R/T)-3(A/H)
128 - 174 MHz Analog Board Schematic diagram.
RF output power is taken from the source of Q5 and amplified/buffered by U11. U15 provides
further amplification and isolation while delivering ≈ +10 dBm into a five pole low-pass output
filter formed by C53, C58, C59, L11 and L12. The five-pole low-pass output filter, with a cutoff
frequency of 190 MHz, effectively eliminates output harmonics. SMB connector J2 provides
interconnection to the companion transmitter or receiver with an output level of ≈ +5 dBm.
2.2.5
406 - 470 MHz Analog Board Circuitry
Refer to the "OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram" on page 4-15 of this
manual.
The UHF OS(R/T)-3H 406 - 470 MHz synthesizer employs an integrated surface mount VCO
module (U17) capable of full frequency band coverage. Two VCO modules are used to cover the
406 - 470 MHz frequencies in the Transmitter module and the 427.4 - 451.4 MHz frequencies in
the Receiver module. The VCO modules are optimized for low phase noise, however the transmitter
VCO is additionally configured with modulation input capability. PLL feedback control voltage, at
the output of the low-pass loop filter, controls the VCO frequency through pin 2;the modulation
input (Mod I/P) port. The PLL control voltage can range between ≈ +1.0 Vdc and +7.0 Vdc
depending on the selected operating frequency. External baseband frequency modulation is
provided through connector P1 and VCO Mod input pin 6.
The PLL low-pass filter is formed by SELECT components C37, C38, C39, C45, R32 and R36.
The loop filter response is optimized for switching time, noise and modulation requirements
specific to each sub-band within the 406 - 470 MHz frequency range. The SELECT components
(including the loop filter and VCO type) can be found in tabular format on the UHF OS(R/T)-3H
406 - 470 MHz Analog Board Schematic diagram.
RF output power is taken from the VCO RF output and amplified/buffered by U11. U15 provides
further amplification and isolation while delivering ≈ +10 dBm to a five pole low-pass output filter
formed by C53, C58, C59, L11 and L12. The five-pole low-pass output filter, with a cutoff
frequency of 530 MHz, effectively eliminates output harmonics. SMB connector J2 provides
interconnection to the companion transmitter or receiver with an output level of ≈ +5 dBm.
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2-5
2.3
Synthesizer Digital Circuitry (Digital Board)
Refer to the "OS(R/T)-3(A/H) Digital Board Schematic Diagram" on page 4-19 of this manual.
Microcontroller U4 generates control signals utilized within the synthesizer module. U4
communicates with synthesizer IC U10, monitors the synthesizer lock detect, manages PTT input
and output and determines the operating frequency by reading channel number information from
either the four rotary Binary Coded Decimal (BCD) switches mounted on the main Transmitter and
Receiver PCB, or by reading four externally driven CHANNEL SELECT lines. Microcontroller
U4 is also designed to communicate with Daniels SYNTHESIZER CHANNEL PROGRAMMER
(CP-SC-3) through I/O lines TX DATA (P1-17), RX DATA (P1-9) and BOOTSTRAP (P2-2).
This external programmer places the operating program in non-volatile microprocessor memory
and programs up to 15 user defined channel selections. An internal "watchdog" timer provides
robust software protection in all operating modes.
Data communication between the digital and analog circuit boards is achieved through four optical
transmitters (U5 through U8) and one optical receiver (U9). The optical interface provides a fully
isolated inter-board data communications link designed to prevent digital noise from interfering
with sensitive PLL circuitry.
2.4
Frequency Control
This is hidden text.
2.4.1
BCD Switch Frequency Control
Selection of the desired synthesizer output frequency is straightforward. If all four of the
CHANNEL SELECT lines (CHAN SEL3 - CHAN SEL0) are pulled low (to GND), the
synthesizer will scan the four BCD switches (FSW1 - FSW4) located on the receiver and
transmitter main circuit boards via connections SW1 COM - SW4 COM and PC4 - PC7 and
establish the operating frequency from these switches. The four CHANNEL SELECT lines,
CHAN SEL3 - CHAN SEL0, are connected via the MT-3 transmitter or receiver main board
module connector to the M3 motherboard subrack. These lines are by default normally pulled low
(to GND) via jumpers located on the M3 motherboard subrack.
If any one of the CHANNEL SELECT lines are pulled high (to +9.5 Vdc), then the synthesizer’s
frequency of operation will be determined by the CHANNEL SELECT lines and not the BCD
switches. Up to 15 separate channel frequencies can be pre-programmed into a ‘table’ in nonvolatile microprocessor memory and accessed through binary interpretation of the CHANNEL
SELECT lines. The most significant bit (MSB) in the CHANNEL SELECT binary code is
represented by CHAN SEL3 and the least significant bit (LSB) is represented by CHAN SEL0.
For example, if all CHANNEL SELECT lines are pulled high, (i.e. binary ‘1111’) then the 15th
frequency entry in the internal channel table will be selected. The channel table is normally preprogrammed at the factory to user specifications, but may be programmed in the field using Daniels
SYNTHESIZER CHANNEL PROGRAMMER (CP-SC-3).
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In transmitters, the synthesizer operating frequency is the transmitter operating frequency; however,
for receivers, an IF Offset correction factor must be added to or subtracted from the synthesizer
operating frequency in order to determine the actual receive frequency. For VHF and UHF
Receivers, the IF Offset correction factor is 21.4 MHz, while for 800 and 900 MHz Receivers it is
45 MHz. Refer to Channel Designation Table documentation for simplified channel number and
frequency information.
2.4.2
Frequency Select Handle Frequency Control
In AM Receiver and Transmitter modules so equipped, the Frequency Select Handle (FSH)
replaces the normal Front Panel handle and allows direct Front Panel selection of the operating
frequency. Operation of the FSH is enabled by setting all external CHANNEL SELECT lines to
‘1111’ (i.e. all lines jumpered to +9.5 Vdc). The FSH user interface consists of three pushbuttons
plus an 8-digit dot matrix display. The FSH module communicates with the synthesizer through a
standard 2-wire serial interface (9600 Baud, 8 bits, no parity, 1 stop bit) using simple ASCII
command protocols. On power up or on any key press, the synthesizer is interrogated by the FSH
for the current channel number and corresponding channel frequency, and this information is then
briefly displayed on the FSH display. The frequency may be either incremented or decremented
from the displayed value by pressing the Frequency Increase È or Frequency Decrease Í
button, as appropriate. For more detailed operating information, refer to the "Frequency Select
Handle Instruction Manual".
2.5
Synthesizer Base and Frequency Increment Table
The OS-3A/H Synthesizer operates in frequency increments of 5.0/6.25 kHz, 12.5 kHz or 25 kHz
depending on the particular model and band of operation. The Base Frequency for any given
synthesizer model is the lowest frequency generated.
Model Number
OST-3H035
OST-3H045
OSR-3H061
OST-3A128
OSR-3A149
OST-3H141
OST-3H162
OSR-3H141
OSR-3H162
OST-3H418
OST-3H460
OSR-3H440
Freq. Range
29 - 38 MHz
38 - 50 MHz
50.4 - 71.4 MHz
118 - 138 MHz
139.4 - 159.4 MHz
128 - 152.6 MHz
150 - 174 MHz
128 - 153 MHz
150 - 174 MHz
406 - 430 MHz
450 - 470 MHz
427.4 - 451.4 MHz
Base Frequency
29 MHz
29 MHz
50.4 MHz
118 MHz
139.4 MHz
128 MHz
150 MHz
128 MHz
150 MHz
406 MHz
406 MHz
427.4 MHz
Freq. Increment
5.0/6.25 kHz
5.0/6.25 kHz
5.0/6.25 kHz
25/8.333 kHz
25/8.333 kHz
5.0/6.25 kHz
5.0/6.25 kHz
5.0/6.25 kHz
5.0/6.25 kHz
12.5 kHz
12.5 kHz
12.5 kHz
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2-7
2.6
5.0/6.25 kHz Channelization.
All Daniels VHF synthesizers (excluding AM synthesizers) have been designed to generate
frequencies in both 5.0 kHz and 6.25 kHz channel increments. BCD channel switch settings from
0000 to 4999 will therefore select operating frequencies with 5.0 kHz increments, while BCD
switch settings from 5000 to 9999 will select operating frequencies with 6.25 kHz increments.
Calculation of the operating frequency for VHF synthesizers capable of 5.0/6.25 kHz
channelization is determined as follows:
•BCD switch settings from 0000 to 4999: Multiply the switch setting by 5.0 kHz and add
the result to the synthesizer base frequency.
Example: An OST-3H141 synthesizer has a base frequency of 128 MHz. The
selected channel number is 0988. The synthesizer output frequency is:
((988 x 5 kHz) + 128 MHz) = 132.940 MHz
•BCD switch settings from 5000 to 9999: Subtract 5000 from the switch setting. Multiply
the result by 6.25 kHz and add the result to the synthesizer base frequency.
Example: An OSR-3H162 synthesizer has a base frequency of 150 MHz. The
selected channel number is 7205. The synthesizer output frequency is:
((7205-5000) x 6.25 kHz) + 150 MHz) = 163.78125 MHz
2.7
8.333 kHz Channelization.
Daniels AM synthesizers have been designed to generate frequencies in 8.333 kHz increments. In
North America, AM channels and operating frequencies are allocated in triples of 8.333 kHz
(i.e. 25 kHz steps). The operating frequency for synthesizers having 8.333 kHz channelization is
determined as follows:
•Multiply the BCD switch setting by 8.333 kHz and add the result to the synthesizer base
frequency.
Example: An OST-3A128 synthesizer has a base frequency of 118 MHz. The
selected channel number is 0231. The synthesizer output frequency is:
[(1200 x 8.333 kHz) + 118 MHz] = 128.000 MHz
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2.8
12.5 kHz Channelization.
The operating frequency for Synthesizers having 12.5 kHz channelization is determined as follows:
•Multiply the BCD switch setting by 12.5 kHz and add the result to the synthesizer base
frequency.
Example: An OST-3H418 synthesizer has a base frequency of 406 MHz. The
selected channel number is 1660. The synthesizer output frequency is:
((1660 x 12.5 kHz) + 406 MHz) = 426.7500 MHz
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3.
SYNTHESIZER ALIGNMENT
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3.1
General
OS(R/T)-3(A/H) enhanced synthesizer alignment is simplified by using a Type 84 subrack and RF
extender card/cable of providing receiver or transmitter power and signal interconnection.
Alternately, +9.5 Vdc may be directly connected to a receiver or transmitter module with the positive
connection on pins B6 / Z6 and the negative connection on pins B30 / Z30 / B32 / Z32. Receiver
balanced audio (600 Ω) is available at pins B26 and Z26.
3.2
Repair Note
The OS(R/T)-3(A/H) synthesizer employs a large number of surface mount components. Removal
and/or replacement of surface mount components should never be performed using an ordinary
soldering iron but should only be performed at surface mount rework and repair stations equipped
with Electro Static Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended that solder wick braid be used
in lieu of vacuum type de-soldering tools to help prevent damage to the printed circuit boards.
3.3
Recommended Test Equipment
Alignment of the synthesizer requires the following test equipment, or its equivalent:
Power supply - Regulated +9.5 Vdc at 2 A. Phillips PM 2811
Oscilloscope / Multimeter - Fluke 97 Scopemeter
Radio communications test set - Marconi Instruments 2965A
It is recommended that the radio communications test set be referenced to an external high stability
frequency source (WWVH, GPS, Loran C) so that the OS-3A/H internal high stability local
oscillator may be accurately set to within its ±1 ppm frequency tolerance.
3.4
OS(R/T)-3(A/H) Synthesizer Factory Configuration
The OS(R/T)-3(A/H) Synthesizer is factory configured as follows:
•Internal 9.6 MHz reference selected.
•VCO modulation (via audio processor) enabled (OST TX versions only)
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3-1
The corresponding internal synthesizer jumper settings are:
•
•
Digital Board
Jumper JU2 not installed
Jumper JU1 installed
9.6 MHz internal frequency reference selected
AM Multichannel mode selected
•
•
Analog Board
Jumper JU1: 'B' position
Jumper JU2 not installed
Internal frequency reference selected
Internal frequency reference selected
3.5
OS(R/T)-3(A/H) Synthesizer Alignment
Invisible text
3.5.1
General
Under normal circumstances (i.e. a change in operating frequency within the synthesizer’s
maximum tuning range), synthesizer alignment is accomplished with the synthesizer installed in the
MT-3 Receiver IF/Audio Board or the MT-3 Transmitter Main Board. The alignment procedure
involves setting the internal TCXO reference frequency (if one is installed and the internal
reference option is enabled). This step is described in "Reference Frequency Alignment", section
3.5.5.5. A change in operating frequency from the initial factory setting that exceeds the
synthesizer’s maximum tuning range (Refer to Specifications section 1.3) requires a more involved
alignment procedure as described in sections 3.5.2 to 3.5.5. Conversion of a synthesizer from
internal reference to external reference or vice-versa is accomplished through selection of jumper
JU1 A or B, as appropriate and JU2 (Refer to section 3.5.6).
3.5.2
Synthesizer Test Points
Analog Board Component Layout (Top)
Common to all synthesizer family members.
TP1
TP2
TP3
TP4
+8.0 ±0.3 Vdc. U6 positive regulator output.
+5.0 ±0.1 Vdc. U7 positive regulator output.
+5.0 ±0.1 Vdc. U8 positive regulator output (always on).
PLL error voltage. Normal range is +0.5 to +4.5 Vdc (depending on frequency).
Nominally adjusted for +2.3 Vdc (via C24) for center channel.
UHF/VHF versions employing integrated VCO modules (OSR-3H440,
OST-3H418, OST-3H460, OSR-3A149, OST-3A128) require no adjustment.
Digital Board Component Layout (Bottom)
TP1
TP2
3-2
+5.0 ±0.1 Vdc. U2 positive regulator output (controlled via pin P2-4).
Microcontroller E clock. 2 MHz logic level square wave.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3.5.3
Synthesizer Removal and Installation
The synthesizer module is secured to the main board (MT-3 Receiver IF/Audio Board or MT-3
Transmitter Main board) with a single counter sunk Phillips machine screw accessible from the top
cover. Remove this screw to remove the synthesizer module. Using a plastic coated lifting tool,
such as a small screwdriver with the tip covered in heat shrink material, gently lift the synthesizer
module from the main circuit board by applying pressure in a rotating fashion about the four
corners of the synthesizer module. It is important to gently remove the synthesizer module
"straight out" in order to prevent damage to the connector pins. Installation of the synthesizer is
performed in a reverse fashion. It is important to ensure complete connector pin alignment prior to
any application of reinsertion force. Four corner locating pins on the synthesizer housing assist in
connector pin alignment during installation and removal.
Note: Complete synthesizer alignment can be performed without removing the synthesizer.
The alignment procedure starting in section 3.5.5 may now be performed.
3.5.4
Circuit Board Removal
Note: Circuit board removal is not required for tuning purposes.
Using a vacuum de-soldering station, de-solder connections P1, P2 and P3. Remove SMB
connectors J1 and J2 by de-soldering the center pins and removing four M2.0 machine screws.
These connection points are shown in the "OS(R/T)-3(A/H) XXX - XXX MHz Analog Board
Component Layout (Top)" diagrams. Remove seven M2.0 machine screws and carefully remove
the analog circuit board. Removal of the analog circuit board will expose three inter-board wire
connections. Carefully remove three ferrite beads and six Teflon washers from the inter-board
connection wires. Attempt to maintain the position of the three inter-board wires in order to
simplify re-assembly. The digital board may now be extracted by removing four M2.0 machine
screws. Follow a reverse procedure to re-assemble.
3.5.5
Frequency Adjustment and Channel Selection
Connect a radio communications test set through a short section of low loss 50 Ω coaxial cable to
the synthesizer module SMB RF output jack (J2). Select the desired channel number via the BCD
frequency selection switches on the MT-3 Transmitter Main board or the MT-3 Receiver IF/Audio
board (or through .the Frequency Programming Module). Turn the power off and back on and
wait a few minutes for the oscillator to completely stabilize. It should be noted that the internal
synthesizer TCXO, if installed, operates continuously (regardless of the TX PTT state) when
installed in a transmitter.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3-3
The measured RF output signal should be within ±1.0 ppm of the specified oscillator frequency at
an output level of +5 dBm. Note that unlocked synthesizer operation will be indicated by an
unstable or spurious RF output signal. The "Unlocked" red LED will also be illuminated when the
PLL is unlocked. Check that the requested channel number is within the frequency range of the
particular synthesizer model. An unlocked condition may be rectified by adjusting the VCO tuning
elements as described in the following procedures (no adjustment required for the Multichannel
AM Synthesizers). Note that there are variations in alignment procedures between the three
synthesizer family members as described in the following sections.
3.5.5.1
VHF OS(R/T)-3H 29 - 71.4 MHz VCO Alignment
Refer to the "OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout" diagrams and the
"OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram" on pages 4-1, 4-2 and 4-3 of this
manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4 located
on the synthesizer module analog board (top). Access to TP4 is available through the synthesizer
top cover. Using a small standard blade screwdriver, carefully adjust the VCO fine frequency
"TUNE" trimmer capacitor C24 until a test point (TP4) voltage of approximately +2.3 Vdc is
obtained. PLL loop control voltages below approximately +0.5 Vdc and above approximately
+4.5 Vdc will indicate an "out of lock" synthesizer condition.
If a test point (TP4) reading of approximately +2.3 Vdc is unattainable through adjustment of C24,
then the coarse frequency jumpers, JU2-JU4 require modification in order to pull the VCO tune
range within the adjustment range of fine tuning capacitor C24. The top synthesizer cover must be
removed in order to gain access to the coarse frequency jumpers. The coarse frequency jumpers
(JU2-JU4) may be considered to be a selectable binary weighted capacitor element with JU2 being
the most significant "bit" and JU4 being the least significant "bit". The tuning resolution size is
≈12 pF (JU4). If the tuning voltage remains higher than +2.3 Vdc, decrease the tuning jumper
setting by 1 "bit" position and re-adjust C24 in an attempt to achieve +2.3 Vdc at TP4. For
example, if coarse frequency jumpers JU2-JU4 are all installed and represented by 111 then a
decrease by 1 "bit" position (12 pF) is represented by a binary jumper selection of 110; jumper
JU4 is not installed and jumpers JU2, JU3 are installed. Continue to decrease the jumper position
one "bit" at a time until the synthesizer regains lock with TP4 adjusted (C24) for +2.3 Vdc. If the
tuning voltage remains lower than +2.3 Vdc, increase the jumper setting by 1 "bit" position and readjust C24 in an attempt to achieve +2.3 Vdc at TP4. Repeat this procedure until +2.3 Vdc is
achieved at TP4.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within a +1.0 to +4.0 Vdc
range. Adjust the fine-tuning capacitor C24 to center multiple channel voltages symmetrically about
+2.3 Vdc. Channel selections beyond the tuning range capability of the synthesizer will result in
3-4
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
unlocked operation. The tuning range capability of all synthesizer models is listed in the
Specifications section (1.3) of this manual.
3.5.5.2
VHF OS(R/T)-3A 118 - 159.4 MHz Alignment
Refer to the "OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3A 118 - 159.4 MHz Analog Board Schematic Diagram" on pages 4-5, 4-6 and 4-7 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4 located
on the synthesizer module analog board (top). Access to TP4 is available through the synthesizer
top cover. VHF synthesizers operating in the 118 - 159.4 MHz frequency range require no
frequency adjustment as tuning is microprocessor controlled. (The OST-3A128 and OSR-3A149,
covering 118-138 MHz and 139.4 - 159.4 MHz respectively, provide full band coverage without
tuning adjustment.)
All channel selections should result in a TP4 voltage between +3.1 and +3.5 Vdc. Channel
selections beyond the tuning range capability of the synthesizer will result in unlocked operation
over the temperature range -40C to +60C. The tuning range capability of all synthesizer models is
listed in the Specifications section of this manual.
3.5.5.3
VHF OS(R/T)-3H 128 - 174 MHz VCO Alignment
Refer to the "OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3H 128 - 174 MHz Analog Board Schematic Diagram" on pages 4-9, 4-10 and 4-11 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4 located
on the synthesizer module analog board (top). Access to TP4 is available through the synthesizer
top cover. Using a small standard blade screwdriver, carefully adjust the VCO fine frequency
"TUNE" trimmer capacitor C24 until a test point (TP4) voltage of approximately +2.3 Vdc is
obtained. Measured PLL loop control voltages below approximately +0.5 Vdc and above
approximately +4.5 Vdc will indicate an "out of lock" synthesizer condition.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within the +1.0 to
+4.0 Vdc range. Adjust the fine-tuning capacitor C24 to center multiple channel voltages
symmetrically about +2.3 Vdc. Channel selections beyond the tuning range capability of the
synthesizer will result in unlocked operation. The tuning range capability of all synthesizer models
is listed in the Specifications section of this manual.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3-5
3.5.5.4
UHF OS(R/T)-3H 406 - 470 MHz VCO Alignment
Refer to the "OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram" on pages 4-13, 4-14 and 4-15 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4 located
on the synthesizer module analog board (top). Access to TP4 is available through the synthesizer
top cover. The UHF synthesizers operating in the 406 - 470 MHz frequency range employ
integrated VCO modules having no external frequency adjustment capability. The OST-3H418,
OST-3H460 and OSR-3H440 models cover frequencies from 406 - 430 MHz, 450 - 470 MHz and
427.4 - 451.4 MHz respectively and provide full band coverage without tuning adjustment. For the
OST-3H418, measured PLL control voltages below approximately +0.5 Vdc and above
approximately +4.5 Vdc will indicate an “out of lock” condition. For the OSR-3H440 and the
OST-3H460, measured PLL control voltages below approximately +1.0 Vdc and above
approximately +7.0 Vdc will indicate an “out of lock” condition.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within the +0.5 to
+4.5 Vdc range for the OST-3H418. The TP4 voltage for the OSR-3H440 and the OST-3H460
should be within the +1.0 to +7.0 Vdc range. Channel selections beyond the tuning range
capability of the synthesizer will result in unlocked operation. The tuning range capability of all
synthesizer models is listed in the Specifications section of this manual.
3.5.5.5
Reference Frequency Alignment
Adjust the synthesizer TCXO fine frequency potentiometer RV1 until the correct output frequency
is achieved. Access to this potentiometer is through an opening in the synthesizer top cover. A RF
power level of approximately +5 dBm should be measured at the synthesizer module output
connector and the frequency should be within ±1 ppm of the desired operating frequency.
Reference frequency adjustments should be made at room temperature (+25°C) after a ten minute
stabilization period.
3-6
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3.5.6
Jumper Configuration
Solder jumpers are clearly marked on both synthesizer digital and analog circuit boards. Refer to
the "OS(R/T)-3(A/H) Digital Board Component Layout (Bottom)" diagram on page 4-17 of this
manual and the applicable "OS(R/T)-3(A/H) Analog Board Component Layout (Top)" diagram on
page 4-18 for jumper locations. The following list details the required jumper configuration for the
two synthesizer operating modes:
1)
Internal reference. Install jumper JU1-B, on the Analog Board (Standard). The internal
temperature compensated crystal oscillator (TCXO) provides the reference signal with a
stability of ±1 ppm from -30°C (Optional -40°C) to +60°C.
2)
External reference input. Install jumper JU1-A and JU2 on the Analog Board. This mode is
used in applications requiring better than ±1 ppm frequency stability. An external reference
signal must be provided at synthesizer SMB connector J1.
3)
Reference Frequency Select. Install jumper JU2 on the Digital Board to select a 10.0 MHz
reference frequency. When not installed, the reference frequency is by default 9.6 MHz.
JU2 must not be installed when using the internal 9.6 MHz TCXO reference. JU2 is used
by the microcontroller to establish the correct reference frequency division ratio. (Located
on the Digital Board; The Synthesizer module must be removed to change jumper JU2.)
4)
AM Multichannel Synthesizer Select. Install jumper JU1 on the Digital Board to select and
enable the AM Multichannel Synthesizer with Frequency Select Handle.
Caution: Care must be exercised when reinstalling the synthesizer module on the Transmitter
Main board or the IF/Audio board. Pay careful attention to pin alignment before
pressing the synthesizer module into its mating sockets.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
3-7
This Page Intentionally Left Blank
3-8
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
4.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Diagrams
4.1.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Bottom)
R50
180R
C42
22µF
C38
1.0µF
C37
1.0µF
C39
1.0µF
2K7
R32
15K
R33
680R
L5
SEL
L7
4.7µH
R40
180R
C49 22nF
R36
Q5
J211
L12
4.7µH
+ C50
22µF
L9
1.5µH
L8
1.5µH
C24
1-14pF
C45
470nF
C54
22µF
L6
10µH
L4
10µH
C48 SEL
R51
220R
R2
330R
L10
1.5µH
R26
1R2
LED1
L3
10µH
L1
10µH
TRANSMITTER
L2
10µH
PCB 50038-02
DESIG.
TX 29 - 40 MHz
OST - 3H035
C48
68 nF
L5
260 nH
RECEIVER
TX 39 - 50 MHz
OST - 3H045
68 nF
197 nH
RX 50.4 - 71.4 MHz
OSR - 3H061
Not Installed
138 nH
OS3050M1
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3H050 ANALOG BOARD THROUGH HOLE BOTTOM DESIGNATION
LAYOUT
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
DATE: FEB 26, 1997
BOARD No.:
DWG No: OS3H040AT2A
DWG REV DATE: JAN 6/99
50038-02
4-1
4.1.2
OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Top)
JU2
JU3
JU4
R27
15K0
C62
47pF
MMBD701L
C63 C64 C28 D3
22pF 12pF 1nF
C23
SEL
R20
10R0
C61
R25
SEL
D2 10R0
MMBV609L
D1
MMBV609L
R22
1k00
J1
C41
1nF
R21
20k0
C9
10nF
R38
49R9
R39
0R0
R53
10k0
R1
49R9
R30
R31 10R0
49R9
C40
C36
33pF
330pF
C34
U11
SEL
MSA-0611
C25
1nF
C17
1nF
C4
10nF
C35
3.3pF
C47
330pF
U16
MSA-0611
R41
R49
33R2
C43
10nF
C53
SEL
L11
SEL
L13 R56
SEL 274R
TRANSMITTER
C58 C59
SEL SEL
C57 R54
SEL 18R2
R55
274R
R48
27R4
Remove seven M2.0
machine screws to
remove analog board.
DESIG.
J2
C55
R52 10nF
49R9
R28
N/I
C29
47µF
LOCK DETECT
LED
TX 29 - 40 MHz
OST - 3H035
C23
C34
C53
C57
C58
C59
C61
L11
L13
150 pF
56 pF
56 pF
15 pF
33 pF
33 pF
150 pF
100 nH
100 nH
18k2
R29
U2
OPL550
Q2
U3
OPL550
U4
OPL550
U1
OPL550
BC817
C10
100nF
BC817
R9 R6 R7 C14
1k00
10nF
1k00 10k0
R17
5k11
R45
27R4
U15
C46
330pF
MSA-0611
18R2
R47
47R5
C56
330pF
TP4
C51
10nF
R46
33R2
R44
47R5
C44
330pF
U5
OP140A
R8
10k0
C8 R5
100nF 100R
D4
BYD17J
C52
330pF
RV1
5k0
R16
5k11
C16
1nF
C18
47µF
R19
10k0
R11
10k0
D5
BAS16
C5
100nF
Q3
C26
1nF
BC807
R18
Q4
R10
JU1 10k0
10k0
C11
R12
A B
1µF
10k0
C27
4.7µF
BAR located on
bottom side of TCXO
R29
SEL
C31
1nF
U10
SEL
C21
10nF
C22
10nF
R24
10R0
U9
SI9945DY
C13
4.7µF
TP2
TCXO1
R15
10R0
TP3
C15
4.7µF
C30
10nF
P3
R35
10k0
R34
10k0
TP1
U10
TX 39 - 50 MHz RX 50.4 - 71.4 MHz
OST - 3H045
OSR - 3H061
100 pF
47 pF
56 pF
15 pF
33 pF
33 pF
100 pF
100 nH
100 nH
56 pF
33 pF
Not Installed
68 pF
68 pF
100 pF
56 pF
120 nH
120 nH
3k92
3k92
MC145193
MC145193
C3
1nF
R4
R3
BC817
10k0
C19 10k0
10nF
Q1
U6
LT1129-IS8
R23
P1
C20
10R0
4.7µF
R13
C12
11k8
4.7µF
U7
LP2951
C7
C1
10nF
1nF
R14
C6
10k0
P2 C2
U8
47µF
1nF
LP2951
PCB 50038-02
MC145191 or
MC145192
RECEIVER
Desolder three board
interconnect points to
separate analog and
digital boards..
OS3050M2B
JU1 position B selected
for internal 9.6 MHz
DANIELS
ELECTRONICS
DANIELS
DE ELECTRONICS
4-2
VICTORIA, B.C.
TITLE: OS-3H040 ANALOG BOARD GENERIC
SURFACE
TH TOP DESIGNATION
LAYOUT
SM
MOUNT
TOP DESIGNATIONS
TOP LAYOUT
DATE: FEB 27, 1997
BOARD No.:
50038-02
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29-470 MHz
DWG No:OS3HANA040AS1A
No:OS3HANA040AS2A
DWG REV DATE: 26 MAY 2000
+8VA
4.1.3
U9
SI9945DY
OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram
AGND
P1
8 VIN
MODULATION INPUT
L1
10uH
C1
1.0nF
TP1
OUTPUT 1
7 GND
ADJ 2
6 GND
GND 3
5 SHDN
TO ALL +8VA SUPPLY POINTS
R13
11K8
+ C12
4.7uF
U6
LT1129-IS8
L4
10uH
R14
10K0
AGND
AGND
AGND
U7
LP2951
GND 3
R3
10K0
AGND
8 INPUT
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
4 GND
L2
10uH
C62
47pF
C63
22pF
AGND
+ C42
22uF
AGND
C51
10nF
Q5
J211
C24
1-14pF
1 IN
OUT
GND
JU3
C40
33pF
D3
MMBD701
R15
10R0
+5VB
+ C6
47uF
C7
10nF
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
VCC
R31
49R9
R44
47R5
C44
330pF
R41
18R2
C28
1.0nF
JU4
AGND
AGND
AGND
C15
4.7uF
FB 7
AGND
AGND
AGND
AGND
GND
AGND
R47
47R5
OUTPUT
R51
220R
J2
C59
SEL
C57
SEL
AGND
R55
274
R56
274
AGND AGND
AGND AGND
C54
22uF
AGND
L10
1.5uH
C56
330pF
R49
33R2
R28
N/I
VCNTRL
C58
SEL
+8VA
C55
10nF
1 IN
OUT
GND
R54
18R2
L13
SEL
RF OUTPUT
C52
330pF
AGND
U16
MSA-0611
C47
330pF
AGND
+8VA
AGND
3.5 dB Pad
L11
SEL
AGND
R48
27R4
+5VA
C25
1.0nF
AGND
AGND
AGND
R39
0R00
AGND
R27
15K0
AGND
R52
49R9
AGND
AGND
AGND
AGND
AGND
L3
10uH
R16
5K11
JU1
R19
10K0
FREQ CONTROL
CLK 18 CLK
ENB 17 ENB
C16
1.0nF
R17
5K11
AGND
R5
100R
OUTA 16 OUTPUTA
OUTB 15 OUTPUTB
AGND
+5VA
NC
R23
10R0
C21
10nF
14 VDD
13 TEST 2
12 VCC
11 FIN
AGND
C8
100nF
20 REFIN
19 DIN
DIN
C29
47uF
U10
SEL
C19
10nF
RV1
5K0
+5VA
C20
4.7uF
REFOUT 1 NC
LD 2
AGND
C30
10nF
AGND
øR 3 NC
øV 4 NC
VPD 5
TP4
R32
15K0
AGND
Q2
BC817
RX 8
TEST 1 9 NC
FIN 10
R36
2K7
R29
SEL
C22
10nF
AGND
C45
470nF
C49
22nF
C31
1.0nF
AGND AGND
+5VA
TP4 LOOP CONTROL
SET FOR ≈ 2.3 VDC
R53
10K0
PDOUT 6
GND 7
C37
1.0uF
R6
1K00
AGND R7
10K0
C50
22uF
L9
1.5uH
R46
33R2
R38
49R9
AGND
1 IN
OUT
GND
R45
27R4
AGND
C18
47uF
AGND
U15
MSA-0611
C46
330pF
L12
4.7uH
L5
SEL
AGND
8 INPUT
R50
180R
C53
SEL
U11
MSA-0611
C36
330pF
C35
3.3pF
L6
10uH
AGND
TCXO1
9.6 MHz
C14
10nF
TP3
C3
1.0nF
C38
1.0uF
C39
1.0uF
AGND
R24
10R0
C26
1.0nF
AGND
AGND
AGND
AGND
AGND
J1
EXTERNAL REFERENCE
INPUT (50Ω)
C9
10nF
C4
10nF
U2
OPL550
AGND
R1
49R9
AGND
R8
10K0
AGND
+5VA
R9
1K00
U3
OPL550
R18
Q4
10K0
BC817
R11
10K0
C10
100nF
AGND
VCC 1
OUT 2
OUTB
ENB
D5
BAS16
+5VA
AGND
AGND
U10
GND 3
U4
OPL550
+5VA
AGND
R35
10K0
VCC 1
OUT 2
GND 3
U5
OP140A
R10
10K0
R12
10K0
AGND
C23
C34
C48
C53
C57
C58
C59
C61
L5
L11
L13
R22
R29
AGND
AGND
VCC 1
OUT 2
DESIGNATION
C27
4.7uF
+5VA
GND 3
LOCK DETECT
OUTPUT
ACTIVATED WHEN
UNLOCKED
C64
12pF
R25
10R0
R22
1K00
C17
1nF
AGND
TCXO MOD INPUT
DATA INPUT
R40
180R
L8
1.5uH
JU2
AGND
CLK
AGND
L7
4.7uH
+ C13
4.7uF
U8
LP2951
4 GND
ENABLE
ACTIVE HIGH
C43
10nF
C61
SEL
AGND
+9.5 VDC SUPPLY
P3
AGND
C33
100uF
C34
SEL
Z2
FB 7
AGND
AGND
D2 5
+8VA
C32
100uF
AGND
Q1
BC817
C2
1.0nF
G2
D4
BYD17J
D2
MMBV609L 1
D1
MMBV609L 1
AGND
R21
20K0
TO ALL +5VA SUPPLY POINTS
P2
D2 6
C41
1.0nF
TP2
+5VA
R4
10K0
D1 7
S2
C48
SEL
C5
100nF
VCC 1
OUT 2
POWER CNTRL
G1
R30
10R0
R26
1R2
C23
SEL
U1
OPL550
D1 8
AGND
AGND
+5VB
R20
10R0
NC 4
AGND
AGND
+8VA
+8VA
S1
R34
10K0
Q3
BC807
R2
330R
100 pF
47 pF
68nF *
56 pF
56 pF
33 pF
Not Installed
Not Installed
15pF
33 pF
33 pF
150 pF
260 nH *
100 nH
100 nH
475R
18k2
15pF
33 pF
33 pF
100 pF
197 nH *
100 nH
100 nH
475R
3k92
68 pF
68 pF
100 pF
56 pF
138 nH *
120 nH
120nH
Not Installed
3k92
MC145191 or
MC145192
MC145193
MC145193
HIGHEST REFERENCE DESIGNATORS
LOCK DETECT
+ C11
1.0uF
C64
D5
L13
LED1
Q5
R56
RV1
TCXO1
U16
UNUSED REFERENCE DESIGNATORS
AGND
LED1
LTL-93BEK1
ID≈10 mA
AGND
150 pF
56 pF
68nF *
56 pF
CLK
R33
680R
RECEIVER
OSR-3H061
TX 50.4 - 71.4 MHz
* Thru Hole Component
DIN
TRANSMITTER
OST-3H035
OST-3H045
TX 29 - 40 MHz
TX 39 - 50 MHz
U12 - U14
R37
R42, R43
-----
-----
-----
-----
-----
-----
DE
TITLE:
DATE:
DWG No:
DANIELS
ELECTRONICS
VICTORIA B.C.
OS(R/T)-3H 29 - 71.4 MHz ANALOG BOARD SCHEMATIC DIAGRAM
24 FEB 97
OS3050M3B
BOARD No: 50038-02
DWN BY: COLIN GUNN
APRVD:
DWG REV DATE:
26 MAY 00
BOARD REV:
AGND
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4-3
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-4
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4.2
OS(R/T)-3A 118 - 159.4 MHz Analog Board Diagrams
4.2.1
OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Bottom) PCB 50082-04
L8
1.5uH
Q5
J211
L7
1.5uH
C42
22uF
C39
SEL
C38
SEL
C37
SEL
R36
SEL
R32
SEL
R33
680R
L5
L4
1.5µH
R2
330R
C45
SEL
C63
680nF
L13
1.5uH
C49 SEL
R26
1R2
L6
1.5uH
LED1
L3
10uH
SELECT COMPONENTS
L2
10uH
DESIG.
AM TX
118 - 138 MHz
OS - 3A128
C37
C38
C39
C45
C49
R32
470 nF
100 nF
NOT INSTALLED
330 nF
2.2 nF
68K
R36
8K2
AM RX
139.4 - 159.4 MHz
OS - 3A149
1.0 µF
1.0 µF
1.0 µF
470 nF
22 nF
15K
1K8
OS3150M1A
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3A130 ANALOG BOARD BOTTOM
OUTLINE THROUGH HOLE DESIGNATIONS
LAYOUT
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
DATE: APR 18, 1999
BOARD No.:
DWG No:TBA
DWG REV DATE: 04 NOV 99
50082-04
4-5
4.2.2
OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Top) PCB 50082-04
Select values
C40
SEL
C23
SEL
R27
11k8
D6
SEL
D3
MMBD701L
C28
6.8µF
C35
5.6pF
R63
C34 10R0
10nF
C60
2.2µF
R31
49R9 C32
C36 100µF
3.3pF
D7
R20
10R0 SEL
D1
D2
MMBV609L MMBV609L
U18
C17
1nF PIC12C672 R37
C61
U17
49k9 LTC1275I
4.7µF
TP4
R62
R59
C24
C62 R57 4k75 U19
10K0
1nF C25
10nF 274K
MC33172
N/I
R39
R60 R61
0R0
SEL 20K0
R25
C4
R58
10R0
10nF
825K
J1
R1
49R9
U2
C9 C48 OPL950
10nF 100nF
R8
10k0
U3
OPL950
U4
OPL950
U1
OPL950
C33
100µF
R44
1k82
C1
1nF
R45
18R2
D4
R30
10R0
BYD17J
C47
330pF
C41
R41
100nF
20k0
Q6
MMBR901
U11
MSA-0611
Remove seven M2.0
machine screws to
remove analog board.
C44
330pF C53
27pF
L11 C58
47nH 47pF
C43
10nF
R40
C59
L12 27pF
27pF
47nH
SEL
C52
10nF
J2
R46
C46 475R
100nF
R28
N/I
C29
47µF
U5
OP140A
C31
1nF
C26
1nF
R29
18k2
LOCK DETECT
LED
P3
C30
10nF
TP1
R35
10k0
R34
10k0
C3
1nF
R22
BAS16 D5 R11
U10
137k C5 Q3
R43
R4
R3
Q2
MC145191
10k
BC817
100nF BC807
137k
10k0
10k0
BC817
C19
R53
C10
Q4
U20
R38 BC817
10nF
Q1
R10
100nF
U6
C50
100k 49k9
R9 R6
74HC14
10k0
1k00
JU1
100nF
R12
LT1129-IS8
1k00
R18
R7
10k0 C22 C21
R23
C51 100nF A B 10k0 C11
P1
10k0
C20
1µF
10R0
10nF 10nF
R5
4.7µF
R13
C27
100R RV1 R19
C12
C8
11k8
4.7µF
5k0 10k0
4.7µF
R24
100nF JU2
U7
10R0
BAR located on
U9
LP2951
C7
C13
SI9945DY
bottom
side
of
TCXO
C18
4.7µF
10nF
R14
R17
47µF
C6
TP2
5k11
10k0
C2
P2
U8
47µF
TCXO1
R15
1nF
C15
LP2951
R16 C14 C16
10R0
4.7µF
5k11 10nF 1nF
TP3
R42
100k
C23
DANIELS
DE ELECTRONICS
4-6
C40
D6,D7
R40
R60
SELECT COMPONENTS
Not Inastalled (installed during final assembly)
AM TX 118 -138 MHz
AM RX 118 -138 MHz
OST - 3A128
OSR - 3A149
Factory
3.3pF Installed JumpersNot Installed
Not Installed
8.2pF
D6-SMV1212-004, D7-N/I
SMV1211
SMV1211-001
220Ω
330Ω
39K2
68K1
Desolder three board
interconnect points to
separate analog and
digital boards..
OS3150M2A
JU1 POSTION B SELECTED
FOR INTERNAL 9.6 MHz
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3A130
OS-3A130 ANALOG
ANALOGBOARD
BOARDSURFACE
OUTLINE
TOP THROUGH
MOUNTHOLE
DESIGNATIONS
LAYOUT
DESIGNATIONS
LAYOUT
DATE: APR 18, 1999
BOARD No.: 50082-04
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H)
29 - 470 MHz
DWG No:OS3AxxxxxS1A
DWG REV DATE: 04 NOV 99
+8VA
C32 AND C33 ARE SURFACE MOUNT
OR THROUGH HOLE PARTS
4.2.3
+8VA
OS(R/T)-3(A/H) 118 - 159.4 MHz Analog Board Schematic Diagram
TP1
8 VIN
C5
100nF
OUTPUT 1
7 GND
ADJ 2
6 GND
GND 3
5 SHDN
AGND
R13
11K8
R22
137K0
U6
LT1129-IS8
D1 8
G1
D1 7
S2
D2 6
G2
D2 5
R27
11K8
AGND
POWER CNTRL
L4
1.5uH
U7
LP2951
AGND
AGND
R4
10K0
R3
10K0
8 INPUT
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
P2
AGND
9.5V
8 INPUT
+ C6
47uF
C2
1.0nF
C7
10nF
C18
47uF
AGND
AGND
SENSE 2
3 SHDN
5VTAP 6
4 GND
GND
AGND
AGND
FB 7
VCNTRL
+5VA
FREQ CONTROL
R19
10K0
+5VA
20 REFIN
DIN 19 DIN
C19
10nF
CLK 18 CLK
ENB 17 ENB
16 OUTPUTA
15 OUTPUTB
R23
10R0
C21
10nF
C20
4.7uF
C22
10nF
NC
14 VDD
13 TEST 2
12 VCC
11 FIN
C4
10nF
C9
10nF
R1
49R9
AGND
R9
1K00
ENABLE
ACTIVE HIGH
R18
10K0
U20b
74HC14
R11
10K0
C50
100nF
R43
137K0
U4
OP950
R53
100K0
AGND
U20d
74HC14 AGND
9.5V
DIN
DOUT
AGND
AGND
C58
47pF
AGND
C59
27pF
AGND
AGND
AGND
GP1
GP0
GP5
GP2
GP4
R37
4 49K9
GP3
GND
AGND
R58
825K0
R57
274K0
U18
PIC12C672
C24
1.0nF
1 2
VDD
LOAD
GND
U17
LTC1257I
R63
10R0
U19
MC33172
AGND
AGND
+5VA
AGND
AGND
R28
N/I
REFOUT 1 NC
LD 2
TP4 LOOP CONTROL
SET FOR ≈3.3 VDC
C29
47uF
øR 3 NC
øV 4 NC
VPD 5
C30
10nF
TP4
AGND
PDOUT 6
GND 7
RX 8
TEST 1 9 NC
FIN 10
AGND
R32
SEL
R36
SEL
R29
18K2
AGND
C49
SEL
C45
SEL
C37
SEL
C38
SEL
C39
SEL
AGND
AGND
AGND
AGND
DESIG.
AM TX 118-138 MHz
OST-3A128
C23 *
10 pF
13
12
AM RX 139.4-159.4 MHz
OSR-3A149
NOT INSTALLED
C37
470 nF
1.0 µF
C38
100 nF
1.0 µF
C39
NOT INSTALLED
1.0 µF
C40 *
NOT INSTALLED
8.2 pF
330 nF
470 nF
C45
C45
C49
2.2 nF
22 nF
SMV1211-001
D6 - SMV1212-004, D7 - N/I
68K
R32
R36
R35
10K0
10
U20f
74HC14
+5VA
C51
100nF
C53
27pF
AGND
C17
1.0nF
1 2
D6*, D7*
CLK
1 2
11
R34
10K0
AGND
+5VB
CLK
D5
BAS16
U20c
74HC14 AGND
U20e
74HC14
1 2
AGND
ENB
+5VA
AGND
RF OUTPUT
C44
330pF
C27
4.7uF
Q4
BC817
R38
49K9
+5VB
U3
OP950
+5VB
AGND
AGND
+5VA
AGND
AGND
J2
C26
1.0nF
R24
10R0
C48
1 100nF
CLK
REF
AGND
+5VA
R8
10K0
AGND
R42
100K0
VOUT
AGNDAGND
+5VB
U2
OP950
C31
1.0nF
L12
47nH
AGND
AGND
AGND
R45
18R2
L11
47nH
+5VA
R6
1K00
EXTERNAL REFERENCE
INPUT (50Ω)
R61
20K0
U10
MC145191
AGND
AGND
AGND
AGND
R7
10K0
J1
R17
5K11
Q2
BC817
C46
10nF
1 IN
OUT
GND
R31
100R0
2 SM_0805
VCC
1 2
R39
C16
1.0nF
R5
100R
RV1
5K0
C8
100nF
C61
2 4.7uF
AGND
L8
1.5uH
U11
MSA-0611
AGND
C60
2.2uF
AGND AGND
C25
SEL
JU2
AGND
R59
10K0
AGND
JU1
R60
SEL
AGND
TCXO MOD INPUT
C63
680nF
AGND
R16
5K11
C3
1.0nF
+ C42
22uF
AGND
L3
10uH
P3
C62
10nF
D7
SEL A
L6
1.5uH
OUTPUT
AGND
AGND
TCXO1
9.6 MHz
VCC
R15
10R0
C15
4.7uF
R62
4K75
C47
330pF
1 2
C1
1 2 1.0nF
U19b
MC33172
L13
1.5uH
MMBR901
R44
1K82
+5VB
R46
475R0
AGND
AGND
OUTPUT 1
5 ERROR
R41 AGND
20K0 Q6
D6
SEL
R25
10R0
TP3
+5VB
AGND
1 2
AGND
AGND
AGND
C35
5.6pF
AGND
C14
TO ALL +5VB SUPPLY POINTS 10nF
U8
LP2951
C36
3.3pF
D3
MMBD701L
AGND
FB 7
AGND
AGND
Q1
BC817
C28
6.8uF
+ C13
4.7uF
5VTAP 6
4 GND
C33
100uF
TO ALL +5VA SUPPLY POINTS
C34
10nF
D2
MMBV609L
Z2
L2
10uH
D1
MMBV609L
TP2
+5VA
C23
SEL
C32
100uF
L7
1.5uH
Q5
J211
L5
C52
10nF
AGND
R20
10R0
C41
100nF
D4
BYD17J
R26
1R2
C40
SEL
R14
10K0
AGND
R30
10R0
S1
14
+9.5 VDC SUPPLY
AGND
U20a
74HC14
+ C12
4.7uF
NC 4
AGND
U1
OP950
R40
330R (SEL)
C43
10nF
U9
SI9945DY
AGND
TO ALL +8VA SUPPLY POINTS
+8VA
Z1
+5VB
+8VA
15K
8K2
1K8
R60 *
39K2
68K1
R40
330R
330R
* - Surface Mount Components
AGND
DIN
DATA INPUT
U5
OP140A
C10
100nF
+5VA
R10
10K0
R12
10K0
AGND
LOCK DETECT
OUTPUT
ACTIVATED WHEN
UNLOCKED
HIGHEST REFERENCE DESIGNATORS
AGND
Q3
BC807
LOCK DETECT
+ C11
1.0uF
C63
D7
L13
LED1
Q6
R63
RV1
TCXO1
U20
UNUSED REFERENCE DESIGNATORS
R33
680R
R2
330R
AGND
AGND
LED1
ID≈10 mA
AGND
C54 - C57
L1, L9, L10
R54-R56
U12 - U16
-----
-----
R21, R47-R52
---------
DE
DANIELS
ELECTRONICS
VICTORIA B.C.
TITLE: OS(R/T)-3(A/H) 118 - 159.4 MHz ANALOG BOARD SCHEMATIC DIAGRAM
DATE:
06 JULY 99
DWG No:
OS3150M3A
BOARD No: 50082-04
DWN BY: STAN POLYAKOV
DWG REV DATE:
BOARD REV:
APRVD:
08 AUGUST 1999
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4-7
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-8
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4.3
OS(R/T)-3H 128 - 174 MHz Analog Board Diagrams
4.3.1
OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Bottom)
L9
1.5µH
+ C50
R50 22µF
180R
C42
22µF
C37
1.0 µF
SEL
R32
SEL
R33
680R
C32
100µF
C33
100µF
C39
SEL
C49 SEL
L5
L5
L7
1.5µH
R40
180R
C38
SEL
R36
Q5
J211
L4
1.5µH
C45
SEL
C54
22µF
L8
1.5µH
R2
330R
C24
1-14pF
L6
1.5µH
R51
220R
R26
1R2
L10
1.5µH
LED1
L3
10uH
SELECT COMPONENTS
VHF LOW BAND
VHF HIGH BAND
DESIG.
128 - 153 MHz
150 - 174 MHz
OSx - 3H141
OSx - 3H162
L1
10µH
L2
10µH
PCB 50025-02
C38
C39
C45
1.0 µF
1.0 µF
470 nF
470 nF
NOT INSTALLED
220 nF
C49
R32
R36
33 nF
12K
2K2
22 nF
15K
6K2
OS3150M1B
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3H ANALOG BOARD THROUGH HOLE BOTTOM DESIGNATION
LAYOUT
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
DATE: MARCH 22, 1996
BOARD No.:
DWG No:TBA
DWG REV DATE: 15 MARCH 2000
50025-02
4-9
4.3.2
OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Top)
C24 Fine Frequency Adjust
Select values
R27
11k8
C23
SEL
C28
6.8µF
C40
SEL
D3
MMBD701L
C34
10nF
R20
10R0
D1
N/I
J1
SELECT COMPONENTS
Receiver
Transmitter
128 - 174 MHz
128 - 174 MHz
OSR - 3Hxxx
OST - 3Hxxx
R22
100R
0R0
R25
10R0
C17
1nF
BC817
C40
12 pF
3.3 pF
12 pF
6.8 pF
8.2 pF
6.8 pF
U3
OPL550
U4
OPL550
U1
OPL550
1k00 10k0
C8 R5
100nF 100R
R17
5k11
Q4
BC817
C10
100nF
R9 R6 R7 C14
1k00
10nF
C23
C35
TP4
U2
OPL550
R41
18R2
R47
47R5
R49
10R0
C18
47µF
C5
100nF
R11
10k0
JU1
R19
10k0
D5
BAS16
A B
RV1
5k0
BAR located on
bottom side of TCXO
R16
5k11
C16
1nF
C51
10nF
R45
27R4
C43
10nF
C46
330pF
U15
MSA-0611
Remove seven M2.0
machine screws to
remove analog board.
C55
10nF
C56
330pF
R28
N/I
U5
OP140A
Q3
BC807
R18
R10
10k0
10k0
C11
R12
1µF
10k0
C27
4.7µF
U10
MC145193
C13
4.7µF
TP2
TP3
C15
4.7µF
LOCK DETECT
LED
P3
TP1
R35
10k0
R34
10k0
C19
10nF
C3
1nF
R4
10k0
R3
10k0
U7
LP2951
U8
LP2951
Q1
P1
C12
4.7µF
C7
10nF
P2
BC817
U6
LT1129-IS8
R23
C20
10R0
4.7µF
C21
10nF
C22
10nF
R24
10R0
U9
SI9945DY
R15
10R0
C30
10nF
R29
3k92
C31
1nF
C26
1nF
C29
47µF
C2
1nF
PCB 50025-02
Select components
C53
27pF
L11
47nH R54 R56
18R2 274R
C58
47pF R55
274R
J2
L12
C59
47nH
27pF
R48
47R5
R52
N/I
U16
MSA-0611
R44
47R5
C44
330pF
R8
10k0
Q2
SELECT COMPONENTS
VHF HIGH BAND
VHF LOW BAND
150 - 174 MHz
128 - 153 MHz
OSx - 3H162
OSx - 3H141
R39
0R0
R53
10k0
R1
49R9
C9
10nF
C47
330pF
C25
1nF
R21
20k0
C4
10nF
C36
330pF
R30
R31 10R0
49R9
U11
MSA-0611
D2
MMBV609L
R22
SEL
C35
SEL
R46
33R2
D4
BYD17J
C52
330pF
C6
47µF
Desolder three board
interconnect points to
separate analog and
digital boards..
R13
11k8
R14
10k0
C1
1nF
OS3150M2C
JU1 position B Selected
for internal 9.6 MHz
Factory Installed Jumpers
DANIELS
DE ELECTRONICS
4-10
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE:
OS-3H150
ANALOG
BOARD
SURFACE
MOUNT
TOP DESIGNATIONS
TITLE: OS-3H
OS-3H150
ANALOG
ANALOG
BOARD
BOARD
THROUGH
ECO
#584
HOLE
CHANGES
DESIGNATION
LAYOUT
DATE: FEB 24, 1996
BOARD No.: 50025-02
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H)
29 - 470 MHz
DWG
DWG
No:OS3HANA150AT1
No:OS3HANA150AT2
DWG No:OS3HANA150AS2B
No:OS3HANA150AS1A
DWG REV DATE: June 19, 2000
4.3.3
OS(R/T)-3H 128 - 174 MHz Analog Board Schematic Diagram
+8VA
U9
SI9945DY
P1
8 VIN
MODULATION INPUT
L1
10uH
OUTPUT 1
7 GND
Z1
R13
11K8
GND 3
5 SHDN
GND 3
R3
10K0
AGND
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
U8
LP2951
R15
10R0
+5VB
+ C6
47uF
C7
10nF
8 INPUT
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
TCXO1
9.6 MHz
C14
10nF
TP3
AGND
AGND
VCC
AGND
C15
4.7uF
FB 7
C24
1-14pF
C28
6.8uF
C35
SEL
D3
MMBD701L
R22
SEL
C33
100uF
C46
330pF
C43
10nF
AGND
C36
330pF
R44
47R5
+ C42
22uF
R45
27R4
AGND
U11
MSA-0611
AGND
GND
OUTPUT
L12
47nH
R54
18R2
J2
RF OUTPUT
C52
330pF
C53
27pF
+8VA
AGND
AGND
C55
10nF
C44
330pF
R41
18R2
R47
47R5
1 IN
OUT
GND
AGND
R51
220R
AGND
U16
MSA-0611
C47
330pF
R48
47R5
C58
47pF
C59
27pF
R56
274
R55
274
R28
N/I
AGND
AGND
AGND
AGND
AGND
C54
22uF
AGND
L10
1.5uH
C56
330pF
R49
10R0
+8VA
+5VA
C25
1.0nF
3.5 dB Pad
L11
47nH
AGND
R39
0R0
AGND
R52
N/I
AGND
AGND
AGND
AGND
AGND
R16
5K11
JU1
FREQ CONTROL
R19
10K0
R17
5K11
AGND
R5
100R
CLK 18 CLK
ENB 17 ENB
OUTA 16 OUTPUTA
OUTB 15 OUTPUTB
AGND
+5VA
NC
R23
10R0
C21
10nF
14 VDD
13 TEST 2
12 VCC
11 FIN
AGND
C8
100nF
20 REFIN
19 DIN
DIN
C16
1.0nF
C20
4.7uF
C29
47uF
U10
MC145193
C19
10nF
RV1
5K0
+5VA
REFOUT 1 NC
LD 2
AGND
C30
10nF
AGND
øR 3 NC
øV 4 NC
VPD 5
TP4
R32
SEL
AGND
Q2
BC817
RX 8
TEST 1 9 NC
FIN 10
R36
SEL
R29
3K92
C22
10nF
AGND
C49
SEL
C45
SEL
C31
1.0nF
AGND AGND
+5VA
TP4 LOOP CONTROL
SET FOR ≈ 2.3 VDC
R53
10K0
PDOUT 6
GND 7
C37
1.0uF
R6
1K00
AGND R7
10K0
AGND
L6
1.5uH
C18
47uF
AGND
L8
1.5uH
AGND
R31
49R9
C50
22uF
L9
1.5uH
R46
33R2
1 IN
OUT
GND
AGND
R40
180R
1 IN
OUT
GND
R50
180R
AGND
U15
MSA-0611
+8VA
AGND
R25
10R0
VCNTRL
L3
10uH
C3
1.0nF
C38
SEL
C39
SEL
AGND
R24
10R0
C26
1.0nF
AGND
AGND
AGND
AGND
AGND
J1
EXTERNAL REFERENCE
INPUT (50Ω)
C9
10nF
C4
10nF
U2
OPL550
AGND
R1
49R9
AGND
R8
10K0
AGND
+5VA
R9
1K00
U3
OPL550
DESIG.
R18
Q4
10K0
BC817
AGND
R11
10K0
VCC 1
OUT 2
C10
100nF
AGND
VCC 1
OUT 2
OUTB
ENB
D5
BAS16
+5VA
AGND
AGND
GND 3
U4
OPL550
+5VA
AGND
R35
10K0
VCC 1
OUT 2
GND 3
U5
OP140A
R34
10K0
LOW BAND 128-153 MHz
OSx-3H141
HIGH BAND 150-174 MHz
OSx-3H162
C23 *
12 pF
6.8 pF
C35 *
3.3 pF
8.2 pF
C38
1.0 µF
470 nF
C39
1.0uF
Not Installed
C40 *
12 pF
6.8 pF
C45
470nF
220 nF
C49
33nF
22nF
R32
12K
15K
R36
2K2
R22 *
CLK
6K2
100R for OST-3Hxxx
0R0 for OSR-3Hxxx
* - Surface Mount Components
HIGHEST REFERENCE DESIGNATORS
R10
10K0
R12
10K0
AGND
C27
4.7uF
AGND
+5VA
GND 3
LOCK DETECT
OUTPUT
ACTIVATED WHEN
UNLOCKED
D2
MMBV609L
C34
10nF
C51
10nF
C32
100uF
Q5
J211
L5
AGND
DATA INPUT
R27
11K8
C23
SEL
AGND
TCXO MOD INPUT
CLK
AGND
C17
1nF
D4
BYD17J
L7
1.5uH
R21 AGND
20K0
+ C13
4.7uF
AGND
ENABLE
ACTIVE HIGH
D2 5
R30
10R0
R26
1R2
AGND
4 GND
P3
G2
AGND
+9.5 VDC SUPPLY
AGND
FB 7
AGND
C2
1.0nF
D1
N/I
Z2
TO ALL +5VA SUPPLY POINTS
Q1
BC817
D2 6
TP2
8 INPUT
4 GND
L2
10uH
D1 7
S2
AGND
+5VA
R4
10K0
G1
L4
1.5uH
U7
LP2951
D1 8
R20
10R0
AGND
AGND
+8VA
S1
C40
SEL
R14
10K0
AGND
C5
100nF
P2
AGND
+5VB
VCC 1
OUT 2
POWER CNTRL
+ C12
4.7uF
NC 4
U6
LT1129-IS8
U1
OPL550
AGND
TO ALL +8VA SUPPLY POINTS
AGND
AGND
ADJ 2
6 GND
C1
1.0nF
TP1
+8VA
LOCK DETECT
DIN
Q3
BC807
+ C11
1.0uF
R33
680R
R2
330R
C59
D5
L12
LED1
Q5
R56
RV1
TCXO1
U16
UNUSED REFERENCE DESIGNATORS
LED1
AGND
C41,C48
R42,R43
ID≈10 mA
----AGND
C57
U12 - U14
-----
R37,R38
---------
DE
DANIELS
ELECTRONICS
VICTORIA B.C.
TITLE: OS(R/T)-3(A/H) 128.6 - 174 MHz ANALOG BOARD SCHEMATIC DIAGRAM
DATE:
21 FEB 96
DWG No:
OS3150M3C
BOARD No: 50025-02
DWN BY: COLIN GUNN
APRVD:
DWG REV DATE:
19 JUN 00
BOARD REV:
AGND
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4-11
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-12
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4.4
OS(R/T)-3H 406 - 470 MHz Analog Board Diagrams
4.4.1
OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Bottom)
R50
180R
L9
1.5µH
+ C50
22µF
L7
1.5µH
VCO INSTALLED (U17)
RX 427.4 - 451.4 MHz
C42
+ 22µF
LVCO-2309 TEV
R40
180R
C39
SEL
C49 SEL
R36
SEL
SEL
R32
680R
R33
VCO-190-435 MT
U17
C38
SEL
C37
1µF
TX 406 - 470 MHz
C54
22uF
L8
1.5µH
C45
SEL
VCO
R2
330R
L6 R21
1.5µH SEL
R51
220R
R26
1R2
L10
1.5µH
LED1
L3
10µH
DESIGNATION
L1
10µH
L2
10µH
PCB 50028-02
OSR-3H440
RX 427.4 - 451.4 MHz
LVCO-2309 TEV
C37
C38
C39
C45
C49
C60
R21
1.0 µF
1.0 µF
1.0 µF
470 nF
33 nF
Not Installed
Not Installed
R32
R36
4k7
1k5
OST-3H4xx
TX 406 - 470 MHz
VCO-190-435 MT
1.5 µF
1.5 µF
1.5 µF
68 nF
15 nF
0 Ω Wire Jumper
2k7
6k2
1k2
C16
100nF
OS3450M1C
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3H ANALOG BOARD THROUGH HOLE BOTTOM DESIGNATION
LAYOUT
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
DATE: MARCH 22, 1996
BOARD No.:
DWG No:TBA
DWG REV DATE: 23 May 2000 (NB)
50028-02
4-13
4.4.2
OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Top)
C51
R46
D4
10nF
R57
R30 BYD17J 33R2
R58 18R2
R31 10R0
C46
274R
330pF
C36 274R
R44 R45
330pF
C44
47R5 27R4
330pF
R41
U11
18R2
C43
MSA-0611
10nF
R49
R47
SEL
C47
47R5
R48
330pF
C55
SEL
10nF
R52
SEL
U16
MSA-0611 C56
R28
330pF
SEL
C29
47µF
C17
1nF
C34
10nF
C35
100pF
R25
10R0
C25
1nF
R39
0R0
J1
C4
10nF
R53
10k0
TP4
R1
49R9
C9
10nF
U2
OPL550
U3
OPL550
U4
OPL550
U1
OPL550
U5
OP140A
R8
10k0
Q2
BC817
OSR-3H440
OST-3H418
10R0
36k5
27R4
33R2
49R9
MC145190
Not Installed *
OST-3H460
DESIG RX 427.4-451.4 MHz TX 406 - 430 MHz TX 450 - 470 MHz
R28
R29
R48
R49
R52
U10
3k92
47R5
10R0
Not Installed
MC145202F*
or
MC145193F*
* - INDICATES JUMPERED TO 5VA
10R0
36k5
27R4
33R2
49R9
MC145190
C10
100nF
R9 R6 R7 C14
1k00
10nF
1k00 10k0
C8 R5
100nF 100R
R17
5k11
Q4
BC817
C18
47µF
C5
100nF
R11
10k0
JU1
R19
0R0
D5
BAS16
RV1
5k0
R16
5k11
BAR located on
bottom side of TCXO
TCXO1
R29
SEL
C31
1nF
C26
1nF
Q3
BC807
R18
R10
10k0 10k0
C11
R12
1µF
10k0
C27
4.7µF
U10
SEL
C22
10nF
C21
10nF
R24
10R0
U9
C13
SI9945DY
4.7µF
TP2
R15
10R0
TP3
C15
4.7µF
C30
10nF
U15
MSA-0611
C53
10pF
R54 R56
18R2 274R
C52 L11 C58
R55
330pF 18nH 15pF 274R
L12
18nH
C59
10pF
J2
LOCK DETECT
LED
P3
TP1
R35
10k0
R34
10k0
C3
1nF
R4
R3
BC817
10k0
10k0
C19
10nF
Q1
U6
LT1129-IS8
R23
P1
C20
10R0
4.7µF
R13
C12
11k8
4.7µF
U7
LP2951
C7
C1
10nF
1nF
C6
C2
P2
R14
U8
47µF
1nF
10k0
LP2951
Desolder three board
interconnect points to
separate analog and
digital boards..
Factory Installed Jumpers
OS3450M2B
PCB 50028-02
JU1 position B selected
for internal 9.6 MHz
DANIELS
ELECTRONICS
DANIELS
DE ELECTRONICS
4-14
VICTORIA, B.C.
TITLE: UHF
OS-3H
UHF OS-3H
OS-3H
UHF ANALOG
ANALOGBOARD
BOARDSURFACE
SURFACE
THOUGH MOUNT
HOLE
MOUNT
TOP
TOP
TOP
DESIGNATIONS
LAYOUT
LAYOUT
DESIGNATIONS
DATE: FEB 24, 1996
BOARD No.:
DWG No:OS3HANA440AS2
No:OS3HANA440AS1
DWG
DWG REV
REV DATE: Dec/11/2000
MAY 23, 2000
50028-02
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4.4.3
OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram
P1
L1
10uH
8 VIN
+8VA
Z1
R13
11K8
GND 3
5 SHDN
C5
100nF
VCC 1
OUT 2
POWER CNTRL
U7
LP2951
R3
10K0
AGND
8 INPUT
OUTPUT 1
RX 427.4 - 451.4 MHz
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
4 GND
R21
SEL
+ C13
4.7uF
U8
LP2951
C7
10nF
8 INPUT
OUTPUT 1
5 ERROR
SENSE 2
3 SHDN
5VTAP 6
4 GND
R25
10R0
TCXO1
9.6 MHz
R15
10R0
AGND
AGND
VCC
C15
4.7uF
FB 7
GND
OUTPUT
FREQ CONTROL
C3
1.0nF
RV1
5K0
R5
100R
R19
0R0
GND
MOD
GND
12
AGND
11
AGND
C35
100pF
AGND
C43
10nF
AGND
C36
330pF
R57
18R2
AGND
U11
MSA-0611
R44
47R5
+ C42
22uF
R40
180R
R31
274R
C44
330pF
AGND
NC
R23
10R0
AGND
14 VDD
13 TEST 2
12 VCC
11 FIN
C20
4.7uF
R41
18R2
R47
47R5
AGND
VCC 1
OUT 2
PDOUT 6
GND 7
RX 8
TEST 1 9 NC
FIN 10
AGND
AGND
AGND
AGND
AGND
C54
22uF
AGND
L10
1.5uH
C56
330pF
AGND
AGND
AGND AGND
C49
SEL
C45
SEL
AGND
C37
SEL
C38
SEL
C39
SEL
DESIGNATION
AGND
AGND
R24
10R0
TP4 LOOP CONTROL
SET FOR ≈ 4.5 VDC
R36
SEL
R29
SEL
AGND
AGND
AGND
AGND
C27
4.7uF
OUTB
OSR-3H440
RX 427.4 - 451.4 MHz
OST-3H418
TX 406 - 430 MHz
OST-3H460
TX 450 - 470 MHz
C37
1.0 µF
1.5 µF
1.5 µF
C38
1.0 µF
1.5 µF
1.5 µF
C39
1.0 µF
1.5 µF
1.5 µF
C45
470 nF
68 nF
68 nF
C49
33 nF
15 nF
15 nF
C60
Not Installed
0 Ω Wire Jumper
0 Ω Wire Jumper
R21
R32
Not Installed
2k7
2k7
R28
R32
10R0
Not Installed *
10R0
R36
R29
36k5
3k92
36k5
R32
R36
4k7
6k2
6k2
R36
1k5
1k2
1k2
R48
R36
27R4
47R5
27R4
R49
R36
33R2
10R0
33R2
R52
49R9
Not Installed
49R9
U10
MC145190
MC145202* or MC145193*
MC145190
ENB
D5
BAS16
+5VA
AGND
AGND
GND 3
+5VA
AGND
R35
10K0
VCC 1
OUT 2
GND 3
R51
220R
R52
SEL
R53
10K0
R18
Q4
10K0
BC817
C10
100nF
R55
274R
TP4
R32
SEL
AGND
C59
10pF
AGND
øR 3 NC
øV 4 NC
VPD 5
+5VA
GND 3
C58
15pF
R56
274R
C30
10nF
AGND
R11
10K0
VCC 1
OUT 2
AGND
U16
MSA-0611
C47
330pF
AGND
C31
1.0nF
AGND
C53
10pF
+8VA
R49
SEL
C26
1.0nF
AGND
REFOUT 1 NC
LD 2
C22
10nF
R9
1K00
RF OUTPUT
C52
330pF
C55
10nF
1 IN
OUT
GND
+8VA
C29
47uF
20 REFIN
19 DIN
DIN
+5VA
R8
10K0
J2
AGND
AGND
AGND
R28
SEL
R1
49R9
AGND
R54
18R2
AGND
R39
0R0
CLK 18 CLK
ENB 17 ENB
Q2
BC817
C9
10nF
L12
18nH
AGND
R48
SEL
AGND
OUTA 16 OUTPUTA
OUTB 15 OUTPUTB
R6
1K00
J1
R45
27R4
3.5 dB Pad
L11
18nH
L8
1.5uH
AGND
U10
SEL
C21
10nF
AGND R7
10K0
1 IN
OUT
GND
AGND
1 IN
OUT
GND
R58
274R
F1
Band Pass Filter
(Optional)
AGND
L9
1.5uH
R46
33R2
GND
AGND
U15
MSA-0611
+8VA
C46
330pF
C34
10nF
10
RF OUT
AGND
2 B
+5VA
C8
100nF
LOCK DETECT
OUTPUT
ACTIVATED WHEN
UNLOCKED
GND
AGND
AGND
R34
10K0
CLK
* - INDICATES JUMPERED TO +5VA
HIGHEST REFERENCE DESIGNATORS
R10
10K0
R12
10K0
AGND
GND
C50
22uF
AGND
R17
5K11
AGND
U5
OP140A
GND
MOD I/P
GND
C19
10nF
C16
100nF
+5VA
DATA INPUT
GND
C25
1.0nF
AGND
JU1
U4
OPL550
13
GND
GND
L6
1.5uH
C18
47uF
VCNTRL
U3
OPL550
14
VCC
R16
5K11
+5VA
15
GND
AGND
TCXO MOD INPUT
U2
OPL550
16
GND
C17
1.0nF
AGND
L3
10uH
AGND
C33
100uF
AGND
AGND
AGND
AGND
VCO
C14
10nF
TP3
+5VB
+ C6
47uF
C4
10nF
C32
100uF
R50
180R
AGND
+9.5 VDC SUPPLY
CLK
AGND
Z2
FB 7
AGND
EXTERNAL REFERENCE
INPUT (50Ω)
C51
10nF
VCO-190-435 MT
AGND
Q1
BC817
L2
10uH
P3
TX 406 - 470 MHz
LVCO-2309 TEV
TO ALL +5VA SUPPLY POINTS
AGND
L7
1.5uH
TP2
+5VA
C2
1.0nF
D2 5
D4
BYD17J
U17
GND 3
P2
G2
R30
10R0
R26
1R2
AGND
AGND
R4
10K0
D2 6
VCO INSTALLED (U17)
R14
10K0
AGND
C60
SEL
U1
OPL550
D1 7
S2
AGND
U6
LT1129-IS8
G1
NC 4
AGND
+5VB
D1 8
+ C12
4.7uF
+8VA
S1
AGND
TO ALL +8VA SUPPLY POINTS
ADJ 2
6 GND
AGND
TP1
OUTPUT 1
7 GND
C1
1.0nF
ENABLE
ACTIVE HIGH
+8VA
U9
SI9945DY
MODULATION INPUT
LOCK DETECT
DIN
Q3
BC807
+ C11
1.0uF
R33
680R
R2
330R
C60
D5
L12
LED1
Q4
R58, RV1
J2, JU1
TCXO1
UNUSED REFERENCE DESIGNATORS
AGND
LED1
LTL-93BEK1
ID≈10 mA
C23,C24,C28
C40,C41,C48
C57, R22
R20,R27,R37
R38,R42,R43
L4, L5
D1 - D3
AGND
U17
U12 - U14
-----
DE
DANIELS
ELECTRONICS
TITLE:
OS(R/T)-3H 406 - 470 MHz ANALOG BOARD SCHEMATIC DIAGRAM
DATE:
23 MAY 96
DWG No:
OS3450M3D
BOARD No: 50028-02
VICTORIA B.C.
DWN BY: COLIN GUNN
APRVD:
DWG REV DATE: 11 DEC 00
BOARD REV:
2.0
AGND
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4-15
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-16
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4.5
OS(R/T)-3(A/H) Digital Board Diagrams
4.5.1
OS(R/T)-3(A/H) Digital Board Component Layout (Bottom)
C9
100nF
U3
MC33064
R19
27k4
R8
6k81
C8
4.7uF
Q9
BC817
R6
27k4
P1 1ROW x 12P
1ROW x 9P
C7
22pF
X1
8.0Mhz
R11
10M0
U41
68HC11E2
C6
22pF
U9
OPL550
R4
27k4
R10
27k4
JU2
R25
10k0
U8
OP140A
D3
BAS16
Q2
BC817
P2
R39
27k4
U7
OP140A
R24
10k0
1ROW x 6P
U6
OP140A
C5
47uF
L1
10uH
U5
OP140A
U2
LP2951
C15
10uF
JU1
C3
47uF
C4
47uF
U1
SI9933Y
OS3150M4A
PCB 50021-03
OSx-3H
29-470 MHz
JU1
DANIELS
DE ELECTRONICS
NOT INSTALLED
9.6 MHz
REFERENCE
OSx-3A
118-159.6 MHz
INSTALLED
JU2
NOT INSTALLED
DANIELS
ELECTRONICS
10 MHz
REFERENCE
INSTALLED
VICTORIA, B.C.
TITLE:
SIDE
SMSM
VALUE
/ DESIGNATION
TITLE: OS-3H
OS-3HDIGITAL
DIGITALBOARD
BOARDSOLDER
SOLDER
SIDE
LAYOUT
DATE: 31 MARCH 1997
BOARD No.: 50021-03
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H)
29 - 470 MHz
4-17
REV DATE: 14 SEP 1999
DWG No: OS3HDIGAS3A
OS3HDIGAS4B
REV DATE: 14 SEPTERMBER 1998
4.5.2
OS(R/T)-3(A/H) Digital Board Component Layout (Top)
Q11
BC817
R1
0R0
R37
27k4
R35
27k4
R20
27k4
R38
27K4
R34
27k4
R12
27k4
R36
27k4
R22
27k4
R9
27k4
R14
27k4
R29
27k4
R15
27k4
R40
27k4
R16
27k4
R26
10k0
C14
100nF
R 33
332R Q7
BC817
Q3
BC817
C13
100nF
R 32
215R
C12
100nF
Q6
BC817
R 17
27k4
D4
BAS16
D2
BAS16
R 31
215R
C11
100nF
C10
100nF
R2
27k4
Q5
BC817
R 23
10k0
Q4
BC817
R7
27k4
R13
27k4
R28
27k4
R27
27k4
R21
27k4
R5
27k4
Q10
BC817
Q8
BC817
R18
27k4
R 30
215R
C2
100nF
C1
100nF
Q1
BC817
R41
221k
R3
27k4
D1
BAS16
PCB 50021-03
DE
DANIELS
ELECTRONICS
4-18
OS3150M5B
DANIELS
ELECTRONICS
VICTORIA, B.C.
TITLE: OS-3H
TITLE:
OS-3HDIGITAL
DIGITALBOARD
BOARDCOMPONENT
COMPONENT
SIDE
SIDE
SMSM
VALUE
LAYOUT
/ DESIGNATION
DATE:Manual
25 MARCH 1996
50021-03
Enhanced AM/FM Synthesizer Instruction
OS(R/T)-3(A/H)BOARD
29 -No.:470
MHz
DWG No:
DWG
No: OS3HDIGAS2B
OS3HDIGAS1A
OS3HDIGAS1
OS3HDIGAS
REV DATE:
DATE: 14
10SEP
MAY99
2000
OS(R/T)-3(A/H) Digital Board Schematic Diagram
P1
+5VD
20
P1-20
L1
10.0uH
U1
SI9933DY
P1-2
CHAN SEL3 (I/P)
CHAN SEL1 (I/P)
19
TCXO MOD INPUT
C1
100nF
P1-19
18
TX DATA (O/P)
17
PC7 (I/P)
C2
100nF
R41
221K0
P1-18
DGND
P1-17
16
+ C3
47uF
DGND
DGND
R3
27K4
Q1
BC817
JU1
S1
G1
D1 7
8 INPUT
OUTPUT 1
S2
D2 6
5 ERROR
SENSE 2
G2
D2 5
3 SHDN
5VTAP 6
P2-4
DGND
R2
27K4
P1-16
15
PC4 (I/P)
+ C4
47uF
P1-14
13
P1-13
12
P1-12
+5VD
4 GND
CHAN SEL2 (I/P)
FB 7
16 PC7
RESET
11
14 PC5
12 PC3
P1-11
U3
MC33064
+5VD
C7
22pF
10 PC1
9 PC0
DGND
R7
27K4
17 RESET
R9
27K4
18 XIRQ
19 IRQ
DGND
RX DATA (I/P)
PC6 (I/P)
P1-8
24 PD4
R5
27K4
P1-9
22 PD2
P1-17
20 PD0
SW1 COM (O/P)
P1-6
SW3 COM (O/P)
P1-5
SW4 COM (O/P)
P1-4
C8
4.7uF
R38
27K4
P1-9
R6
27K4
P1-2
MODULATION INPUT
P1-1
R27
27K4
+5VD
R14
27K4
R15
27K4
R16
27K4
R28
27K4
R17
27K4
R34
27K4
P1-20
Q8
BC817
DGND
PB3 39
PB2 40
ENB
PB1 41
PB0 42
DIN
R35
27K4
CLK
R29
27K4
PWCTL
P1-12
Q9
BC817
DGND
R36
27K4
R22
27K4
P1-19
Q10
BC817
DGND
Q11
BC817
R37
27K4
P1-11
+12V PRG
+5VD
+5VD
J4
DGND
+9.5 VDC SUPPLY
+5VD
DGND
PA1 33
PA0 34
26 VDD
LOCK
PA3 31
PA2 32
21 PD1
DGND
PE3 49
PE2 47
PA5 29
PA4 30
23 PD3
DGND
P1-17
+5VD
PA7 27
PA6 28
25 PD5
10
BC817
PE5 46
PE4 44
PB5 37
PB4 38
11 PC2
R21
27K4
Q3
R39
27K4
JU2
PB7 35
PB6 36
13 PC4
+5VD
R13
27K4
DGND
PE1 45
PE0 43
15 PC6
R11
10M0
DGND
DGND
6 R/W
8 XTAL
R8
6K81
IN
5E
7 EXTAL
C6
22pF
C15
10uF
GND
CHAN SEL0 (I/P)
DGND
X1
8.0 Mhz
+5VD
PE7 50
PE6 48
4 AS
SW2 COM (O/P)
3 MODA
+ C5
47uF
DGND
VRH 52
VRL 51
2 MODB
TP2
+5VD
P1-15
14
U4
68HC811E2
1 VSS
DGND
DGND
+5VD
R10
27K4
TP1
U2
LP2951
D1 8
DGND
PC5 (I/P)
+5VD
TO ALL +5 VDC SUPPLY POINTS
P2-6
P1-12B
P2-1
21
P2-2
PRIORITY COR
P1-12B
4.5.3
P1-4
C9
100nF
P1-5
DGND
DGND
P1-13
+5VD
P1-6
DGND
P1-14
P1-18
DGND
P1-15
P1-1
R1
0R0
J1
MODULATION INPUT
+5VD
P1-8
+9.5 VDC SUPPLY
R12
27K4
R19
27K4
R20
27K4
C11
100nF
P1-16
C10
100nF
U5
OP140A
J2
R4
27K4
P2-3
J3
DGND
DGND
Q4
BC817
Q2
BC817
TCXO MOD INPUT
R18
27K4
DGND
ENB
R23 10K0
R30
215R
C12
100nF
DGND
D1 BAS16
P2
DGND
PTT CONTROL (O/P)
P2-6
CLK
POWER DOWN (I/P)
P2-4
P2-3
D2
BAS16
DGND
RX MUTE
DIN
BOOTSTRAP (I/P)
PTT (I/P) A(L)
P2-2
P2-1
R25
10K0
U6
OP140A
DGND
Q5
BC817
R24
10K0
ENABLE
ACTIVE HIGH
CLK
DGND
R31
215R
U7
OP140A
C13
100nF
Q6
BC817
DGND
DATA OUTPUT
DGND
R32
215R
C14
100nF
D3 BAS16
U8
OP140A
DGND
DGND
PWCTL
R26
10K0
Q7
BC817
POWER CONTROL
J4
R33
332R
R41
U9
X1
-----
-----
UNUSED REFERENCE DESIGNATORS
JU1
-----
-----
-----
-----
-----
-----
-----
-----
DGND
U9
JU2
Q11
DGND
HIGHEST REFERENCE DESIGNATORS
C15
DGND
DE
TITLE:
D4 BAS16
DANIELS
ELECTRONICS
VICTORIA B.C.
DGND
LOCK
OS(R/T)-3(A/H) DIGITAL BOARD SCHEMATIC DIAGRAM
+5VD
DATE:
23 APRIL 1992
DWG No:
OS3150M6B
BOARD No: 50021-03
DWN BY: STAN P
3.0
LOCK DETECT INPUT
3 GND
R40
27K4
APRVD:
DWG REV DATE: 14 APRIL 2000
BOARD REV:
1 VCC
OPL550
2 OUT
DGND
DGND
DANIELS
DE ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
4-19
This Page Intentionally Left Blank
DANIELS
DEELECTRONICS
4-20
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5.
PARTS LISTS
This is hidden text.
5.1
OS(R/T)-3H 29 - 71.4 MHz Analog Board Electrical Parts List
Ref.
Desig
Description
Part No.
C1 - C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C21
C20
C22
C23
C23
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32, C33
C34
C34
C34
C35
C36
C37, C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 1.0uF TANT., 10%, 16V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM, 150pF CER., 0805,C0G
CAP., SM, 100pF CER., 0805,C0G
CAP., SM, 56pF CER., 0805, C0G
CAP., 1-14pF TRIM., STAND. >6
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM, 100uF TANT., 20%,16V
CAP., SM, 56pF CER., 0805, C0G
CAP., SM, 47pF CER., 0805, C0G
CAP., SM, 33pF CER., 0805, C0G
CAP., SM 10pF CER., 0805, COG
CAP., SM 330pF CER., 0805, COG
CAP., 1.0uF FILM, MMK5, 10%, 63V
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., SM 33pF CER., 0805, COG
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., 470nF FILM, MMK5,10%,63V
CAP., SM 330pF CER., 0805, COG
CAP., SM 330pF CER., 0805, COG
1008-3A102K5R
1008-4A103K5R
1008-5A104K5R
1055-6D476M16
1008-4A103K5R
1008-5A104K5R
1008-4A103K5R
1008-5A104K5R
1055-5A105M16
1055-5B475K16
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1008-3A102K5R
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1008-4A103K5R
1055-5B475K16
1008-4A103K5R
1008-2A151J1G
1008-2A101J1G
1008-1A560J1G
1082-A1R0014J
1008-3A102K5R
1008-3A102K5R
1055-5B475K16
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1008-3A102K5R
1055-7D107M16
1008-1A560J1G
1008-1A470J1G
1008-1A330J1G
1008-1A100J1G
1008-2A331J1G
1016-6D105K50
1016-6D105K50
1008-1A330J1G
1008-3A102K5R
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1016-5D474K63
1008-2A331J1G
1008-2A331J1G
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
5-1
Ref.
Desig
Description
Part No.
C48
C48
C48
C49
C50
C51
C52
C53
C53
C53
C54
C55
C56
C57
C57
C57
C58
C58
C58
C59
C59
C59
C61
C61
C61
C62
C63
C64
CAP., 68nF FILM, MMK5, 10%,63V
CAP., 68nF FILM, MMK5, 10%,63V
CAP., Not Installed
CAP., 22nF FILM, MMK5, 10%,63V
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., SM, 56pF CER., 0805, C0G
CAP., SM, 56pF CER., 0805, C0G
CAP., SM, Not Installed
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., SM, 15pF CER., 0805, COG
CAP., SM, 15pF CER., 0805, COG
CAP., SM, 68pF CER., 0805, C0G
CAP., SM, 33pF CER., 0805, C0G
CAP., SM, 33pF CER., 0805, C0G
CAP., SM, 68pF CER., 0805, C0G
CAP., SM, 33pF CER., 0805, C0G
CAP., SM, 33pF CER., 0805, C0G
CAP., SM, 100pF CER., 0805,C0G
CAP., SM, 150pF CER., 0805,C0G
CAP., SM, 100pF CER., 0805,C0G
CAP., SM, 56pF CER., 0805, C0G
CAP., SM, 47pF CER., 0805, C0G
CAP., SM, 22pF CER., 0805, C0G
CAP., SM, 12pF CER., 0805, C0G
1016-4A683K63
1016-4A683K63
Not Installed
1016-4A223K63
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A560J1G
1008-1A560J1G
Not Installed
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A150J1G
1008-1A150J1G
1008-1A680J1G
1008-1A330J1G
1008-1A330J1G
1008-1A680J1G
1008-1A330J1G
1008-1A330J1G
1008-2A101J1G
1008-2A151J1G
1008-2A101J1G
1008-1A560J1G
1008-1A470J1G
1008-1A220J1G
1008-1A120J1G
D1, D2
D3
D4
D5
DIODE, MMBV609L VARICAP, SOT-23
DIODE, MMBD701 HOT_CARR. SOT23
DIODE, BYD17J RECTIFIER, SOD87
DIODE, BAS16 SWITCHING, SOT23
2106-MMBV609L
2105-MMBD7010
2101-BYD17J00
2100-BAS16000
L1 - L4
L5
L5
L5
L6
L7
L8 - L10
L11
L11
L11
L12
L13
L13
L13
CHOKE, RF/MOULD.10uH 10%,.25
INDUCTOR,13.5T/260nH,MOLD.,ORG
INDUCTOR,11.5T/197nH,MOLD.,BRN
INDUCTOR, 9.5T/138nH,MOLD.,WHT
CHOKE, RF/MOULD.10uH 10%,.25
CHOKE, RF/MOULD.4.7uH 10%,.25
CHOKE, RF/MOULD.1.5uH 10%,.25
INDUCTOR,SM,100nH CER,10%,1008
INDUCTOR,SM,100nH CER,10%,1008
INDUCTOR,SM,120nH CER,10%,1008
CHOKE, RF/MOULD.,4.7uH,10%,.25
INDUCTOR,SM,100nH CER,10%,1008
INDUCTOR,SM,100nH CER,10%,1008
INDUCTOR,SM,120nH CER,10%,1008
1251-4A00100K
1253-A1352603
1253-A1151971
1253-A0951389
1251-4A00100K
1251-TBA
1251-3A001R5K
1256-2BR1000K
1256-2BR1000K
1256-2BR12OOK
1251-3A004R7K
1256-2BR1000K
1256-2BR1000K
1256-2BR12OOK
LED1
LED, SUB-MIN., 2mm SQ,AXIAL,ORG
2012-S229013C
PCB
PCB, ANALOG,OS-3H VHF 30-50MHz
4309-26500382
5-2
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
OST-3H035
OST-3H045
OSR-3H061
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
Ref.
Desig
Description
Part No.
Q1, Q2
Q3
Q4
Q5
TRANSISTORBC817 NPN, SOT23
TRANSISTORBC807 PNP, SOT23
TRANSISTORBC817 NPN, SOT23
JFET, J211 RF N-CHAN. TO-92
2120-BC817025
2120-BC807025
2120-BC817025
2041-J2110000
RV1
POT., SM 5K0 1T, TOP ADJ
1174-AS2502J1
R1
R2
R3, R4
R5
R6
R7, R8
R9
R10 - R12
R13
R14
R15
R16, R17
R18, R19
R20
R21
R22
R23 - R25
R26
R27
R28
R29
R30
R31
R32
R33
R34, R35
R36
R38
R39
R40
R41
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55 R56
RES., SM 49R9 0805, 1%,100ppm
RES.330R METAL FILM, 5%, 0.5W
RES., SM 10K0 0805, 1%,100ppm
RES., SM 100R 0805, 1%,100ppm
RES., SM 1K00 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 1K00 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 11K8 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM 20K0 0805, 1%,100ppm
RES., SM, 475R 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES.1R2 METAL FILM, 5%, 0.5W
RES., SM 15K0 0805, 1%,100ppm
RES., NOT INSTALLED
RES., SM 18K2 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM 49R9 0805, 1%,100ppm
RES., 15K METAL FILM, 5%, 0.5W
RES.680R METAL FILM, 5%, 0.5W
RES.10K0 METAL FILM, 5%, 0.5W
RES., 2K7 METAL FILM, 5%, 0.5W
RES., SM 56R2 0805, 1%,100ppm
RES., SM 0R00 0805, ZERO OHM JUMPER
RES.180R METAL FILM, 5%, 0.5W
RES., SM 18R2 0805, 1%,100ppm
RES., SM 47R5 0805, 1%,100ppm
RES., SM 27R4 0805, 1%,100ppm
RES., SM 33R2 0805, 1%,100ppm
RES., SM 47R5 0805, 1%,100ppm
RES., SM 27R4 0805, 1%,100ppm
RES., SM 33R2 0805, 1%,100ppm
RES.180R METAL FILM, 5%, 0.5W
RES.220R METAL FILM, 5%, 0.5W
RES., SM 49R9 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 18R2 0805, 1%,100ppm
RES., SM 274 0805, 1%,100ppm
1150-1A49R9FP
1101-2A0331JP
1150-4A1002FP
1150-2A1000FP
1150-3A1001FP
1150-4A1002FP
1150-3A1001FP
1150-4A1002FP
1150-4A1182FP
1150-4A1002FP
1150-1A10R0FP
1150-3A5111FP
1150-4A1002FP
1150-1A10R0FP
1150-4A2002FP
1150-2A4750FP
1150-1A10R0FP
1101-0A01R2JI
1150-4A1502FP
NOT INSTALLED
1150-4A1822FP
1150-1A10R0FP
1150-1A49R9FP
1101-4A0153JP
1101-2A0681JP
1101-4A0103JP
1101-3A0272JP
1150-4A5622FP
1150-0A0R0000
1101-2A0181JP
1150-1A18R2FP
1150-1A47R5FP
1150-1A27R4FP
1150-1A33R2FP
1150-1A47R5FP
1150-1A27R4FP
1150-1A33R2FP
1101-2A0181JP
1101-2A0221JP
1150-1A49R9FP
1150-4A1002FP
1150-1A18R2FP
1150-2A2740FP
TCXO1
VTCXO MODULE9.6 MHz 4 PIN, +- 1ppm
2641-09600BM5
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5-3
Ref.
Desig
Description
Part No.
U1 - U4
U5
U6
U7, U8
U9
U10
U11
U15 U16
DIODE, OPL550 I/R SENSOR,TTL O/P,PLST
LED, OP140A I/R,GaAs,.81 x .23,PLAST.
I.C., LT1129-IS8, PROG. VOLT REG, SO8
I.C., LP2951 PROG. VOLT REG, SO-8
MOSFET, SI9945DY, N CHAN.,SO-8
I.C., MC145191, PLL FREQ/SYNTH, SO-20
I.C., MSA-0611, MM1C AMP, SOT-143
I.C., MSA-0611, MM1C AMP, SOT-143
2014-1L18230T
2013-1G18230A
2305-11290N08
2305-29510N08
2142-SI9945DY
2355-45191N20
2354-MSA06110
2354-MSA06110
5-4
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5.2
Ref.
Desig
C1- C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16, C17
C18
C19
C20
C21, C22
C23
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32, C33
C34
C35
C36
C37
C37
C38
C38
C39
C39
C40
C40
C41
C42
C43
C44
C45
C45
C46
C47
C48
Ref.
OS(R/T)-3A 118 - 159.4 MHz Analog Board Electrical Parts List
Description
Part No.
CAP., SM ,1.0nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 1.0uF TANT., 10%, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM ,1.0nF CER., 0805, X7R, 50V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 10pF CER., 0805, C0G
CAP., NOT INSTALLED
CAP., SM ,1.0nF CER., 0805, X7R, 50V
CAP., NOT INSTALLED
CAP., SM ,1.0nF CER., 0805, X7R, 50V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 6.8uF TANT., 20%, 10V
CAP., SM, 47uF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM ,1.0nF CER., 0805, X7R, 50V
CAP., SM, 100uF TANT., 20%,16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 5.6pF CER., 0805, C0G
CAP., SM, 3.3pF CER., 0805,C0G
CAP., 470nF FILM, MMK5,10%,63V
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., 100nF FILM, MMK5,10%,63V
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., NOT INSTALLED
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., SM, 8.2pF CER., 0805,C0G
CAP., NOT INSTALLED
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 330pF CER., 0805, COG
CAP., 470nF FILM, MMK5,10%,63V
CAP., 330nF FILM, MMK5,10%,50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 330pF CER., 0805, COG
CAP., SM, 100nF CER., 0805, X7R, 50V
1008-3A102K5R
1008-4A103K5R
1008-5A104K5R
1055-6D476M16
1008-4A103K5R
1008-5A104K5R
1008-4A103K5R
1008-5A104K5R
1055-5A105M16
1055-5B475K16
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1055-5B475K16
1008-4A103K5R
1008-1A100J1G
NOT INSTALLED
1008-3A102K5R
NOT INSTALLED
1008-3A102K5R
1055-5B475K16
1055-5B685M10
1055-6D476M16
1008-4A103K5R
1008-3A102K5R
1055-7D107M16
1008-4A103K5R
1008-0A569D1G
1008-0A339J1G
1016-5D474K63
1016-6D105K50
1016-5A104K63
1016-6D105K50
NOT INSTALLED
1016-6D105K50
1008-0A829J1G
NOT INSTALLED
1008-5A104K5R
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1016-5D474K63
1016-5B334K50
1008-4A103K5R
1008-2A331J1G
1008-5A104K5R
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
(OST-3A128)
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
5-5
Desig
Description
Part No.
C49
C49
C50, C51
C52
C53
C58
C59
C60
C61
C62
C63
CAP., 22nF FILM, MMK5, 10%,63V
CAP., 2.2nF FILM, MMK5,10%,63V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 27pF CER., 0805, COG
CAP., SM, 47pF CER., 0805, COG
CAP., SM, 27pF CER., 0805, COG
CAP., SM, 2.2uF TANT., 20%, 20V
CAP., SM, 4.7uF TANT., 10%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., 680nF FILM, MMK5,10%,50V
1016-4A223K63
1016-3A222K63
1008-5A104K5R
1008-4A103K5R
1008-1A270J1G
1008-1A470J1G
1008-1A270J1G
1055-5B225K20
1055-5B475K16
1008-4A103K5R
1016-5D684K50
D1, D2
D3
D4
D5
D6, D7
D6
D7
D7
DIODE, MMBV609L VARICAP, SOT-23
DIODE, MMBD701L HOT CARR., SOT23
DIODE, BYD17J RECTIFIER, SOD87
DIODE, BAS16 SWITCHING, SOT23
DIODE, SMV1211, VARACTOR,SOT2
DIODE,SMV1212-4,VARACTOR,SOT23
DIODE, SMV1211, VARACTOR,SOT2
DIODE, NOT INSTALLED
2106-MMBV609L
2105-MMBD7010
2101-BYD17J00
2100-BAS16000
2106-SMV12111
2106-SMV12124
2106-SMV12111
NOT INSTALLED
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
L2, L3
L4
L5
CHOKE, RF/MOULD., 10uH 10%,.25
CHOKE, RF/MOULD., 3.9uH 10%,.25
BOBBIN 5.5 TURNS, 1.59 mm pitch
WIRE, COPPER, 20AWG, SILVER PLD, 10.2cm
1251-4A00100K
1251-3A003R9K
5791-A1010300
7140-30002000(1pc
10cm,
10mm)
L6 - L8
L11, L12
L13
CHOKE, RF/MOULD., 1.5uH 10%,.25
INDUCTOR, SM, 47nH CER,10%,1008
CHOKE, RF/MOULD., 1.5uH 10%,.25
1251-3A001R5K
1256-1B47N00K
1251-3A001R5K
LED1
LED, SUB-MIN.,2mm SQ,AXIAL,ORG
2012-S229013C
PCB
PCB, ANALOG,OS-3H AM/WB SYNTH.
4309-26500825
Q1, Q2
Q3
Q4
Q5
Q6
TRANSISTOR, BC817 NPN, SOT23
TRANSISTOR, BC807 PNP, SOT23
TRANSISTOR, BC817 NPN, SOT23
JFET, J211 RF, N-CHAN., TO-92A
TRANSISTOR, MMBR901 HIGH FREQ.
2120-BC817025
2120-BC807025
2120-BC817025
2041-J2110000
2124-MMBR9010
R1
R2
R3, R4
R5
R6
R7, R8
R9
R10 - R12
R13
R14
R15
R16, R17
R18, R19
RES., SM, 49R9 0805, 1%,100ppm
RES., 330R METAL FILM, 5%, 0.5W
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 100R 0805, 1%,100ppm
RES., SM, 1K00 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 1K00 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 11K8 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
1150-1A49R9FP
1101-2A0331JP
1150-4A1002FP
1150-2A1000FP
1150-3A1001FP
1150-4A1002FP
1150-3A1001FP
1150-4A1002FP
1150-4A1182FP
1150-4A1002FP
1150-1A10R0FP
1150-3A5111FP
1150-4A1002FP
5-6
(OSR-3A149)
(OST-3A128)
2pcs
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
Ref.
Desig
Description
Part No.
R20
R22
R23 - R25
R26
R27
R28
R29
R30
R31
R32
R32
R33
R34, R35
R36
R36
R37, R38
R39
R40
R41
R42
R43
R44
R45
R46
R53
R57
R58
R59
R60
R60
R61
R62
R63
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 137K0 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., 1R2 METAL FILM, 5%, 0.5W
RES., SM, 11K8 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 18K2 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 100R 0805, 1%,100ppm
RES., 15K METAL FILM, 5%, 0.5W
RES., 68K METAL FILM, 5%, 0.5W
RES., 680R METAL FILM, 5%, 0.5W
RES., SM, 10K0 0805, 1%,100ppm
RES., 1K8 METAL FILM, 5%, 0.5W
RES., 8K2 METAL FILM, 5%, 0.5W
RES., SM, 49K9 0805, 1%,100ppm
RES., SM, 0R00 0805, ZERO OHM JUMPER
RES., 330R METAL FILM, 5%,0.5W
RES., SM, 20K0 0805, 1%,100ppm
RES., SM, 100K 0805, 1%,100ppm
RES., SM, 137K0 0805, 1%,100ppm
RES., SM, 1K82 0805, 1%,100ppm
RES., SM, 18R2 0805, 1%,100ppm
RES., SM, 475R0 0805, 1%,100ppm
RES., SM, 100K 0805, 1%,100ppm
RES., SM, 274K 0805, 1%, 100ppm
RES., SM, 825K0 1206, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 68K1 0805, 1%,100ppm
RES., SM, 39K2 0805, 1%,100ppm
RES., SM, 20K0 0805, 1%,100ppm
RES., SM, 4K75 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
1150-1A10R0FP
1150-5A1373FP
1150-1A10R0FP
1101-0A01R2JI
1150-4A1182FP
1150-1A10R0FP
1150-4A1822FP
1150-1A10R0FP
1150-2A1000FP
1101-4A0153JP
1101-4A0683JP
1101-2A0681JP
1150-4A1002FP
1101-3A0182JP
1101-3A0822JP
1150-4A4992FP
1150-0A0R0000
1101-2A0391JP
1150-4A2002FP
1150-5A1003FP
1150-5A1373FP
1150-3A1821FP
1150-1A18R2FP
1150-2A4750FP
1150-5A1003FP
1150-5A2743FP
1150-5B8253FP
1150-4A1002FP
1150-4A6812FP
1150-4A3922FP
1150-4A2002FP
1150-3A4751FP
1150-1A10R0FP
RV1
POT., SM, 5K0 1T, TOP ADJ
1174-AS2502J1
TCXO1
VTCXO MODULE9.6 MHz 4 PIN, +- 1ppm
2641-09600BM5
U1 - U4
U5
U6
U7, U8
U9
U10
U11
U17
U18
U19
U20
DIODE, OP950 I/R SENSOR,TTL O/P,PLST
LED, OP140A I/R,GaAs,.81 x .23,PLAST.
IC, LT1129-IS8, PROG. VOLT REG,SO-8
IC, LP2951 PROG. VOLT REG, SO-8
MOSFET, SI9945DY, N CHAN.,SO-8
IC, MC145190,PLL FREQ/SYNTH,SO-20
IC, MSA-0611, MM1C AMP,SOT-143
IC, LTC1257I 12BIT SER.DA,S0-8
IC, PIC12C672 MICROCONTROLLER, SO-8
IC, MC33172 DUAL OP AMP, SO-8
IC, 74HC14 HEX SCHMITT, SO-14
TBA
2013-1G18230A
2305-11290N08
2305-29510N08
2142-SI9945DY
2355-45190N20
2354-MSA06110
2387-12570N08
TBA
2302-33172N08
2376-00140N14
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
(OSR-3A149)
(OST-3A128)
5-7
5.3
Ref.
Desig
C1-C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21,C22
C23
C23
C24
C25
C25
C26
C27
C28
C29
C30
C31
C32, C33
C34
C35
C35
C36
C37
C37
C38
C38
C39
C39
C40
C40
C42
C43
C44
C45
C45
C46,C47
Ref.
5-8
OS(R/T)-3H 128 - 174 MHz Analog Board Electrical Parts List
Description
Part No.
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 47µF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 1.0µF TANT., 10%, 16V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM, 47µF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 12pF CER., 0805, COG
CAP., SM, 6.8pF CER., 0805,C0G
CAP., TRIM., 1-14pF STAN. >6T
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 6.8µF TANT., 20%, 10V
CAP., SM, 47µF TANT., 20%, 16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 1.0nF CER., 0805, X7R, 50V
CAP., SM, 100uF TANT., 20%,16V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 3.3pF CER., 0805,C0G
CAP., SM, 8.2pF CER., 0805,C0G
CAP., SM, 330pF CER., 0805, COG
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., 1.0µF FILM, MMK5, 10%, 50V
CAP., 470nF FILM, MMK5,10%,63V
CAP., 1.0µF FILM, MMK5, 10%, 63V
CAP., NOT INSTALLED
CAP., SM, 12pF CER., 0805, C0G
CAP., SM, 6.8pF CER., 0805,C0G
CAP., 22µF DIP. TANT., 20%, 20V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 330pF CER., 0805, COG
CAP., 470nF FILM, MMK5,10%,63V
CAP., 220nF FILM, MMK5,10%,50V
CAP., SM, 330pF CER., 0805, COG
1008-3A102K5R
1008-4A103K5R
1008-5A104K5R
1055-6D476M16
1008-4A103K5R
1008-5A104K5R
1008-4A103K5R
1008-5A104K5R
1055-5A105M16
1055-5B475K16
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1008-3A102K5R
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1055-5B475K16
1008-4A103K5R
1008-1A120J1G
(OS-3H141)
1008-0A689J1G (OS-3H162)
1082-A1R0014J
1008-3A102K5R
(OS-3H141)
1008-3A102K5R (OS-3H162)
1008-3A102K5R
1055-5B475K16
1055-5B685M10
1055-6D476M16
1008-4A103K5R
1008-3A102K5R
1055-7D107M16
1008-4A103K5R
1008-0A339J1G
(OS-3H141)
1008-0A829J1G
(OS-3H162)
1008-2A331J1G
1016-6D105K50
(OS-3H141)
1016-6D105K50 (OS-3H162)
1016-6D105K50
(OS-3H141)
1016-5D474K63 (OS-3H162)
1016-6D105K50
(OS-3H141)
NOT INSTALLED
(OS-3H162)
1008-1A120J1G
(OS-3H141)
1008-0A689J1G
(OS-3H162)
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1016-5D474K63
(OS-3H141)
1016-5A224K50
(OS-3H162)
1008-2A331J1G
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
Desig
Description
Part No.
C49
C49
C50
C51
C52
C53
C54
C55
C56
C58
C59
CAP., 33nF FILM, MMK5, 10%, 63V
CAP., 22nF FILM, MMK5, 10%, 63V
CAP., 22µF DIP. TANT., 20%, 20V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 330pF CER., 0805, COG
CAP., SM, 27pF CER., 0805, COG
CAP., 22µF DIP. TANT., 20%, 20V
CAP., SM, 10nF CER, 0805, X7R, 50V
CAP., SM, 330pF CER., 0805, COG
CAP., SM, 47pF CER., 0805, COG
CAP., SM, 27pF CER., 0805, COG
1016-4A333K63
1016-4A223K63
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A270J1G
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A470J1G
1008-1A270J1G
D1
D2
D3
D4
D5
DIODE, NOT INSTALLED
DIODE, MMBV609L VARICAP, SOT-23
DIODE, MMBD701L HOT CARR., SOT23
DIODE, BYD17J RECTIFIER,SOD87
DIODE, BAS16 SWITCHING, SOT23
NOT INSTALLED
2106-MMBV609L
2105-MMBD7010
2101-BYD17J00
2100-BAS16000
L1-L3
L4
L5
CHOKE, RF/MOULD., 10uH 10%,.25
CHOKE, RF/MOULD., 1.5uH 10%,.25
BOBBIN, 5.5 TURNS, 1.59 mm pitch
WIRE, COPPER, 20AWG, Ag PLATED, 11cm
1251-4A00100K
1251-3A001R5K
5791-A1010300
7140-30002000(1pc
1cm)
L6-L10
L11,L12
L12
CHOKE, RF/MOULD., 1.5uH 10%,.25
INDUCTOR, SM, 47nH CER,10%,1008
INDUCTOR, SM, 47nH CER,10%,1008
1251-3A001R5K
1256-1B47N00K
1256-1B47N00K
LED1
LED, SUB-MIN.,2mm SQ,AXIAL,ORG
2012-S229013C
PCB
PCB, ANALOG, OS-3H H/P SYNTH.
4309-26500252
Q1,Q2
Q3
Q4
Q5
TRANSISTOR, BC817-25,NPN,SOT23
TRANSISTOR, BC807 PNP, SOT23
TRANSISTOR, BC817 NPN, SOT23
JFET, J211 RF, N-CHAN., TO-92A
2120-BC817025
2120-BC807025
2120-BC817025
2041-J2110000
R1
R2
R3,R4
R5
R6
R7,R8
R9
R10-R12
R13
R14
R15
R16, R17
R18, R19
R20
R21
R22
R22
RES., SM, 49R9 0805, 1%,100ppm
RES., 330R METAL FILM, 5%, 0.5W
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 100R 0805, 1%,100ppm
RES., SM, 1K00 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 1K00 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 11K8 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 20K0 0805, 1%,100ppm
RES., SM, ZERO OHM JUMPER,0805
RES., SM, 100R 0805, 1%,100ppm
1150-1A49R9FP
1101-2A0331JP
1150-4A1002FP
1150-2A1000FP
1150-3A1001FP
1150-4A1002FP
1150-3A1001FP
1150-4A1002FP
1150-4A1182FP
1150-4A1002FP
1150-1A10R0FP
1150-3A5111FP
1150-4A1002FP
1150-1A10R0FP
1150-4A2002FP
1150-0A0R0000
1150-2A1000FP
(OSR-3H1xx)
(OST-3H1xx)
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5-9
(OS-3H141)
(OS-3H162)
9cm,
2pcs
Ref.
Desig
Description
Part No.
R23-R25
R26
R27
R28
R29
R30
R31
R32
R32
R33
R34,R35
R36
R36
R39
R40
R41
R44
R45
R46
R47, R48
R49
R50
R51
R52
R53
R54
R55
R56
RES., SM, 10R0 0805, 1%,100ppm
RES., 1R2 METAL FILM, 5%, 0.5W
RES., SM, 11K8 0805, 1%,100ppm
RES., NOT INSTALLED
RES., SM, 3K92 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., SM, 49R9 0805, 1%,100ppm
RES., 12K METAL FILM, 5%, 0.5W
RES., 15K METAL FILM, 5%, 0.5W
RES., 680R METAL FILM, 5%, 0.5W
RES., SM, 10K0 0805, 1%,100ppm
RES., 2K2 METAL FILM, 5%, 0.5W
RES., 6K2 METAL FILM, 5%, 0.5W
RES., SM, 0 0805, ZERO OHM JUMPER
RES., 180R METAL FILM, 5%, 0.5W
RES., SM, 18R2 0805, 1%,100ppm
RES., SM, 47R5 0805, 1%,100ppm
RES., SM, 27R4 0805, 1%,100ppm
RES., SM, 33R2 0805, 1%,100ppm
RES., SM, 47R5 0805, 1%,100ppm
RES., SM, 10R0 0805, 1%,100ppm
RES., 180R METAL FILM, 5%, 0.5W
RES., NOT INSTALLED
RES., SM, 49R9 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 18R2 0805, 1%,100ppm
RES., SM, 274 0805, 1%,100ppm
RES., SM, 274 0805, 1%,100ppm
1150-1A10R0FP
1101-0A01R2JI
1150-4A1182FP
NOT INSTALLED
1150-3A3921FP
1150-1A10R0FP
1150-1A49R9FP
1101-4A0123JP
1101-4A0153JP
1101-2A0681JP
1150-4A1002FP
1101-3A0222JP
1101-3A0622JP
1150-0A0R0000
1101-2A0181JP
1150-1A18R2FP
1150-1A47R5FP
1150-1A27R4FP
1150-1A33R2FP
1150-1A47R5FP
1150-1A10R0FP
1101-2A0181JP
NOT INSTALLED
1150-1A49R9FP
1150-4A1002FP
1150-1A18R2FP
1150-2A2740FP
1150-2A2740FP
RV1
POT., SM, 5K0 1T, TOP ADJ
1174-AS2502J1
TCXO1
VTCXO MODULE, 9.6 MHz 4 PIN, +- 1ppm
2641-09600BM5
U1-U4
U5
U6
U7,U8
U9
U10
U11
U15,U16
DIODE, I/R SENSOR,TTL O/P,PLST
LED, I/R,GaAs,.81 x .23,PLAST.
I.C., LT1129-IS8 ,PROG. VOLT REG,SO8
I.C., LP2951 PROG. VOLT REG, SO-8
MOSFET, SI9945DY, N CHAN.,SO-8
IC, 45193,PLL FREQ/SYNTH,SO-20
IC, MSA-0611, MM1C AMP,SOT-143
IC, MSA-0611, MM1C AMP,SOT-143
2014-1L18230T
2013-1G18230A
2305-11290N08
2305-29510N08
2142-SI9945DY
2355-45193N20
2354-MSA06110
2354-MSA06110
5-10
(OS-3H141)
(OS-3H162)
(OS-3H141)
(OS-3H162)
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5.4
Ref.
Desig
C1 - C3
C4
C5
C6
C7
C8
C9
C10
C11
C12, C13
C14
C15
C16
C17
C18
C19
C20
C21, C22
C25, C26
C27
C29
C30
C31
C32, C33
C34
C35
C36
C37
C38
C38
C39
C39
C42
C43
C44
C45
C45
C46
C47
C49
C49
C50
C51
C52
C53
C54
C55
C56
C58
Ref.
OS(R/T)-3H 406 - 470 MHz Analog Board Electrical Parts List
Description
Part No.
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100nF CER., 0805, X7R, 50V
CAP., SM 1.0uF TANT., 10%, 16V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., 100nF FILM, MMK5, 10%, 63V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM 4.7uF TANT., 10%, 16V
CAP., SM 47uF TANT., 20%, 16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 1.0nF CER., 0805, X7R, 50V
CAP., SM, 100uF TANT., 20%,16V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 100pF CER., 0805, COG
CAP., SM 330pF CER., 0805, COG
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., NOT INSTALLED
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., NOT INSTALLED
CAP., 1.0uF FILM, MMK5,10%,50V
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., 220nF FILM, MMK5,10%,50V
CAP., 470nF FILM, MMK5,10%,50V
CAP., SM 330pF CER., 0805, COG
CAP., SM 330pF CER., 0805, COG
CAP., 22nF FILM, MMK5, 10%,63V
CAP., 33nF FILM, MMK5, 10%,63V
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., SM, 10pF CER., 0805, C0G
CAP., 22uF DIP. TANT., 20%, 20V
CAP., SM 10nF CER, 0805, X7R, 50V
CAP., SM 330pF CER., 0805, COG
CAP., SM, 15pF CER., 0805, C0G
1008-3A102K5R
1008-4A103K5R
1008-5A104K5R
1055-6D476M16
1008-4A103K5R
1008-5A104K5R
1008-4A103K5R
1008-5A104K5R
1055-5A105M16
1055-5B475K16
1008-4A103K5R
1055-5B475K16
1016-5A104K63
1008-3A102K5R
1055-6D476M16
1008-4A103K5R
1055-5B475K16
1008-4A103K5R
1008-3A102K5R
1055-5B475K16
1055-6D476M16
1008-4A103K5R
1008-3A102K5R
1055-7D107M16
1008-4A103K5R
1008-2A101J1G
1008-2A331J1G
1016-6D105K50
NOT INSTALLED
1016-6D105K50
NOT INSTALLED
1016-6D105K50
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1016-5A224K50
1016-5C474K50
1008-2A331J1G
1008-2A331J1G
1016-4A223K63
1016-4A333K63
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A100J1G
1054-6G226M20
1008-4A103K5R
1008-2A331J1G
1008-1A150J1G
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
OST-3H4xx
OSR-3H440
OST-3H4xx
OSR-3H440
OST-3H4xx
OSR-3H440
OST-3H4xx
OSR-3H440
5-11
Desig
Description
Part No.
C59
C60
C60
CAP., SM, 10pF CER., 0805, C0G
CAP., 100nF FILM, MMK5, 10%, 63V
CAP., NOT INSTALLED
1008-1A100J1G
1016-5A104K63
NOT INSTALLED
D4
D5
DIODE, BYD17J RECTIFIER,SOD87
DIODE, BAS16 SWITCHING, SOT23
2101-BYD17J00
2100-BAS16000
L1 - L3
L6 - L10
L11 L12
CHOKE, RF/MOULD.10uH 10%,.25
CHOKE, RF/MOULD.1.5uH 10%,.25
INDUCTOR, SM18nH CER,10%,1008
1251-4A00100K
1251-3A001R5K
1256-1B18N00K
LED1
LED, SUB-MIN.,2mm SQ,AXIAL,ORG
2012-S229013C
PCB
PCB, ANALOG, OS-3H UHF SYNTH.
4309-27500282
Q1, Q2
Q3
Q4
TRANSISTOR, BC817 NPN, SOT23
TRANSISTOR, BC807 PNP, SOT23
TRANSISTOR, BC817 NPN, SOT23
2120-BC817025
2120-BC807025
2120-BC817025
R1
R2
R3 R4
R5
R6
R7 R8
R9
R10 - R12
R13
R14
R15
R16, R17
R18, R19
R21
R21
R23
R24, R25
R26
R28
R28
R28
R29
R29
R29
R30
R31
R32
R32
R33
R34, R35
R36
R36
R39
Ref.
RES., SM 49R9 0805, 1%,100ppm
RES.330R METAL FILM, 5%, 0.5W
RES., SM 10K0 0805, 1%,100ppm
RES., SM 100R 0805, 1%,100ppm
RES., SM 1K00 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 1K00 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 11K8 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM, 5K11 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., 2K7 METAL FILM, 5%, 0.5W
RES., NOT INSTALLED
RES., SM 10R0 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES.1R2 METAL FILM, 5%, 0.5W
NOT INSTALLED
RES., SM 10R0 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM 3K92 0805, 1%,100ppm
RES., SM 36K5 0805, 1%,100ppm
RES., SM 36K5 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM 274R 0805, 1%,100ppm
RES., 4K7 METAL FILM, 5%, 0.5W
RES., 5K6 METAL FILM, 5%, 0.5W
RES.680R METAL FILM, 5%, 0.5W
RES., SM 10K0 0805, 1%,100ppm
RES., 2K2 METAL FILM, 5%, 0.5W
RES., 1K5 METAL FILM, 5%, 0.5W
RES., SM 0R0 0805, ZERO OHM JUMPER
1150-1A49R9FP
1101-2A0331JP
1150-4A1002FP
1150-2A1000FP
1150-3A1001FP
1150-4A1002FP
1150-3A1001FP
1150-4A1002FP
1150-4A1182FP
1150-4A1002FP
1150-1A10R0FP
1150-3A5111FP
1150-4A1002FP
1101-3A0272JP
NOT INSTALLED
1150-1A10R0FP
1150-1A10R0FP
1101-0A01R2JI
NOT INSTALLED
1150-1A10R0FP
1150-1A10R0FP
1150-3A3921FP
1150-4A3652FP
1150-4A3652FP
1150-1A10R0FP
1150-2A2740FP
1101-3A0472JP
1101-3A0562JP
1101-2A0681JP
1150-4A1002FP
1101-3A0222JP
1101-3A0152JP
1150-0A0R0000
5-12
OST-3H4xx
OSR-3H440
OST-3H4xx
OSR-3H440
OST-3H418
OSR-3H440
OST-3H460
OST-3H418
OSR-3H440
OST-3H460
OSR-3H440
OST-3H4xx
OST-3H4xx
OSR-3H440
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
Desig
Description
Part No.
R40
R41
R44
R45
R46
R47
R48
R48
R48
R49
R49
R49
R50
R51
R52
R52
R52
R53
R54
R55, R56
R57
R58
RES.180R METAL FILM, 5%, 0.5W
RES., SM 18R2 0805, 1%,100ppm
RES., SM 47R5 0805, 1%,100ppm
RES., SM 27R4 0805, 1%,100ppm
RES., SM 33R2 0805, 1%,100ppm
RES., SM 47R5 0805, 1%,100ppm
RES., SM 47R5 0805, 1%,100ppm
RES., SM 27R4 0805, 1%,100ppm
RES., SM 27R4 0805, 1%,100ppm
RES., SM 10R0 0805, 1%,100ppm
RES., SM 33R2 0805, 1%,100ppm
RES., SM 33R2 0805, 1%,100ppm
RES.180R METAL FILM, 5%, 0.5W
RES.220R METAL FILM, 5%, 0.5W
NOT INSTALLED
RES., SM 49R9 0805, 1%,100ppm
RES., SM 49R9 0805, 1%,100ppm
RES., SM 10K0 0805, 1%,100ppm
RES., SM 18R2 0805, 1%,100ppm
RES., SM 274R 0805, 1%,100ppm
RES., SM 18R2 0805, 1%,100ppm
RES., SM 274R 0805, 1%,100ppm
1101-2A0181JP
1150-1A18R2FP
1150-1A47R5FP
1150-1A27R4FP
1150-1A33R2FP
1150-1A47R5FP
1150-1A47R5FP
1150-1A27R4FP
1150-1A27R4FP
1150-1A10R0FP
1150-1A33R2FP
1150-1A33R2FP
1101-2A0181JP
1101-2A0221JP
NOT INSTALLED
1150-1A49R9FP
1150-1A49R9FP
1150-4A1002FP
1150-1A18R2FP
1150-2A2740FP
1150-1A18R2FP
1150-2A2740FP
RV1
POT., SM5K0 1T, TOP ADJ
1174-AS2502J1
TCXO1
VTCXO MODULE 9.6 MHz 4 PIN, +- 1ppm
2641-09600BM5
U1 - U4
U5
U6
U7, U8
U9
U10
U10
U10
U11
U15, U16
DIODE, OPL550 I/R SENSOR,TTL O/P,PLST
LED, OP140A I/R,GaAs,.81 x .23,PLAST.
I.C., LT1129-IS8,PROG. VOLT REG, SO8
I.C.LP2951 PROG. VOLT REG, SO-8
MOSFET, SI9945DY, N CHAN.,SO-8
I.C., MC145193, PLL FREQ/SYNTH, SO-20
I.C., MC145190, PLL FREQ/SYNTH, SO-20
I.C., MC145190, PLL FREQ/SYNTH, SO-20
I.C., MSA-0611, MM1C AMP, SOT-143
I.C., MSA-0611, MM1C AMP, SOT-143
2014-1L18230T
2013-1G18230A
2305-11290N08
2305-29510N08
2142-SI9945DY
2355-45193N20
2355-45190N20
2355-45190N20
2354-MSA06110
2354-MSA06110
U17
U17
VCO MODULE,427.4-451.4MHz,T-PK
VCO MODULE, 406-470 MHz,T-PKG.
2621-L002309T
2621-190435MT
OSR-3H440
OST-3H4xx
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5-13
OST-3H418
OSR-3H440
OST-3H460
OST-3H418
OSR-3H440
OST-3H460
OST-3H418
OSR-3H440
OST-3H460
OST-3H418
OSR-3H440
OST-3H460
5.5
OS(R/T)-3(A/H) Digital Board Electrical Parts List
Ref.
Desig
Description
Part No.
C1,C2
C3-C5
C6,C7
C8
C9-C14
C15
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 47µF TANT., 20%, 16V
CAP., SM, 22pF CER., 0805, COG
CAP., SM, 4.7µF TANT., 10%, 16V
CAP., SM, 100nF CER., 0805, X7R, 50V
CAP., SM, 10µF TANT., 20%, 16V
1008-5A104K5R
1055-6D476M16
1008-1A220J1G
1055-5B475K16
1008-5A104K5R
1055-6C106M16
P1
P2
INTERCONNECT/STD,1ROW x 12P,Au
INTERCONNECT/STD,1ROW x9PIN,Au
INTERCONNECT/STD,1ROW x6PIN,Au
5015-IS112G21
5015-IS109G21
5015-IS106G21
D1 - D4
DIODE, BAS16 SWITCHING, SOT23
2100-BAS16000
L1
INDUCTOR, SM, 10.0uH, 10%,1812
1255-4G10000K
PCB
PCB, DIGITAL, OS-3H H/P SYNTH.
4309-26500213
Q1 - Q11
TRANSISTOR, BC817-25,NPN,SOT23
2120-BC817025
R1
R2-R7
R8
R9,R10
R11
R12-R22
R23-R26
R27-R29
R30-R32
R33
R34-R40
R41
RES., SM, 0 0805, ZERO OHM JUMPER
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 6K81 0805, 1%,100ppm
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 10M0 1206, 5%,400ppm
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 10K0 0805, 1%,100ppm
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 215R 0805, 1%,100ppm
RES., SM, 332R 0805, 1%,100ppm
RES., SM, 47K5 0805, 1%,100ppm
RES., SM, 221K 0805, 1%, 100ppm
1150-0A0R0000
1150-4A4752FP
1150-3A6811FP
1150-4A4752FP
1151-7B0106JG
1150-4A4752FP
1150-4A1002FP
1150-4A4752FP
1150-2A2150FP
1150-2A3320FP
1150-4A4752FP
1150-5A2213FP
U1
U2
U3
U4
U5-U8
U9
MOSFET, SI9933DY, P CHAN.,SO-8
IC, LP2951,PROG. VOLT REG,SO-8
IC, MC33064,UNDR/VOLT SEN.SO-8
IC, 68HC811E2, MIC/CTR, PLCC52
LED, I/R,GaAs,.81 x .23,PLAST.
DIODE, I/R SENSOR,TTL O/P,PLST
2142-SI9933DY
2305-29510N08
2308-33064N08
2380-68811P52
2013-1G18230A
2014-1L18230T
X1
RESONATOR, SM, 8.0MHz, CERAMIC
1575-8001816A
5-14
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5.6
OS(R/T)-3(A/H) Synthesizer Mechanical Parts List
Description
Part No.
CASE, OS-3H SYNTH. MODULE,ALUM
3702-66100920
CONN., SMB, JACK,2 HOLE FLANGE
5120-J2SC01BG
FERRITE, BEAD,73 MIX,
FERRITE, BEAD,43 MIX,
FERRITE, BEAD,43 MIX,
FERRITE, BEAD,61 MIX,
1210-73030350
1210-43030350
1210-43030350
1210-61030350
HEADER, .1”, 1 ROWX3PIN, AU
5010-H103ST7L
LABEL, FOIL,FRQ/SN,OS-3H SYNTH
3501-13091006
LID, CASE,OS-3H SYNTH/MODL.,AL
3702-66100921
PIN, 2 x 10mm, GROOVED W/PILOT
5876-D1470210
SCREW, M2.0 x 4, FLAT/PHIL, A2
SCREW, M2 X 4, PAN/PHILLIPS,A2
SCREW, M2.5 x 24.5 FLAT/PHIL, A2
5812-2M0FP04S
5812-2M0PP04S
5812-2M5FP24S
15
WASHER, TFE,0.036ID,1/8OD,.02T
5805-T3612F20
3X3.5mm OD (CON3-CON5)
3X3.5mm OD (CON3-CON5)
3X3.5mm OD (CON3-CON5)
3X3.5mm OD (CON3-CON5)
Qty.
OS-3H050
OS-3A130
OS-3H150
OS-3H440
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
5-15
This Page Intentionally Left Blank
5-16
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
6.
REVISION HISTORY
ISSUE DATE
REVISION
May 97 •
Issue 1
Mar 98 •
Mar 00 •
Changes to the AM Analog board (OST-3A128) to improve performance
ECO #547.
C37 was 220nF is now 100nF and C40 was 8.2pF is now not installed
C45 was 33nF is now 22nF and C49 was 2.2nF is now 1.5nF
R32 was 33kΩ is now 56kΩand R36 was 3k3Ω is now 5k6Ω
Changes to the AM Analog board to improve performance at
ECO #565.
L4 was 1.5µH is now 3.9 µH
-40˚C.
•
Changes to the FM Analog boards to improve manufacturing. ECO #572
C32 & C33 were 100µF through hole tantalums are now 100µF surface mount
tantalums
•
Changes to the OS-3A/H Digital board for compatibility with the new AM
wideband Synthesizers. ECO #579.
Added C15 (10µF) and R41 (221kΩ).
JU1 was added and is installed for AM modules only.
PCB, DIGITAL, OS-3H/P SYNTH was version 2 now version 3.
•
Added the new component layouts, schematic diagram and parts lists for the new
AM wideband synthesizer. Wideband referring to only having to be tune
once and working over the whole AM band (118-138 MHz).
May 00 •
Changes to the OS-3H 128-174 MHz Analog board. ECO #603.
R29 was 18k2 is now 3k92, U10 was MC145191 is now MC145193.
•
Changes to the OSR-3H 128-174 MHz Analog board. ECO #609.
R22 was 100R is now 0R0.
•
Changes to the OS-3A 118-159.4 Analog board. ECO #601.
R42 & r53 were 137kΩ are now 100kΩ.
Jul 00
•
Corrected the SELECT table on the OS(R/T)-3H 128-174 MHz Schematic
diagram (section 4.3.3).
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
7-1
ISSUE DATE
Aug 00 •
Changes to the OS(R/T)-3(A/H) Digital board. ECO #599.
R30, R31 & R32 were 332R are now 215R.
•
7-2
REVISION
Changes to the OS-3H 406-470 MHz Analog board. ECO # 597.
R48 was 27R4 is now 47R5, R49 was 33R2 is now 10R.
R52 was 49R9 is now Not Installed.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
DANIELS
ELECTRONICS LTD. ®
MT-3 RADIO SYSTEMS
VHF TRANSMITTER
CHANNEL DESIGNATION
TABLES
VT-3 132-174 MHz
Covers model:
VT-3/140-SWA2, VT-3/160-SWA2
VT-3/140-SWA8, VT-3/160-SWA8
VT-3/140-SNA2, VT-3/160-SNA2
VT-3/140-SNA8, VT-3/160-SNA8
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
Issue:
Issue Date:
Printing Date:
Part No.:
Previous Issue:
N/A
May 1998
Previous Issue Date: N/A
January 2001
IM21-VT3150CT
Daniels Electronics Ltd.
Victoria, BC.
PRINTED IN CANADA
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous development.
This equipment may incorporate minor changes in detail from the information
contained in this manual.
ii
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
TABLE OF CONTENTS
Page
1.
VT-3/140 Channel Designation Table: 132-150MHz, 5kHz Increments ..........................1-1
VT-3/140 Channel Designation Table: 132-150MHz, 6.25kHz Increments .....................2-1
VT-3/160 Channel Designation Table: 150-174MHz, 5kHz Increments ..........................3-1
VT-3/160 Channel Designation Table: 150-174MHz, 6.25kHz Increments .....................4-1
REVISION HISTORY.....................................................................................................5-1
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
iii
This Page Intentionally Left Blank
iv
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
1.
Chan.
Num.
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
VT-3/140 Channel Designation Table: 132-150MHz, 5kHz Increments
Freq.
(MHz)
132.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.1 9000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
132.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
Chan.
Num.
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
Freq.
(MHz)
132.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
132.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
Chan.
Num.
Freq.
(MHz)
950 132.75000
951
.75500
952
.76000
953
.76500
954
.77000
955
.77500
956
.78000
957
.78500
958
.79000
959
.79500
960
.80000
961
.80500
962
.81000
963
.81500
964
.82000
965
.82500
966
.83000
967
.83500
968
.84000
969
.84500
970
.85000
971
.85500
972
.86000
973
.86500
974
.87000
975
.87500
976
.88000
977
.88500
978
.89000
979
.89500
980
.90000
981
.90500
982
.91000
983
.91500
984
.92000
985
.92500
986
.93000
987
.93500
988
.94000
989
.94500
990
.95000
991
.95500
992
.96000
993
.96500
994
.97000
995
.97500
996
.98000
997
.98500
998
.99000
999
.99500
1000 133.00000
1001
.00500
1002
.01000
1003
.01500
1004
.02000
1005
.02500
1006
.03000
1007
.03500
1008
.04000
1009
.04500
1010
.05000
1011
.05500
1012
.06000
1013
.06500
1014
.07000
1015
.07500
1016
.08000
1017
.08500
1018
.09000
10 19
.09500
1020
.10000
1021
.10500
1022
.11000
1023
.11500
1024
.12000
Chan.
Num.
Freq.
(MHz)
1025 133.12500
1026
.13000
1027
.13500
1028
.14000
1029
.14500
1030
.15000
1031
.15500
1032
.16000
1033
.16500
1034
.17000
1035
.17500
1036
.18000
1037
.18500
1038
.19000
1039
.19500
1040
.20000
1041
.20500
1042
.21000
1043
.21500
1044
.22000
1045
.22500
1046
.23000
1047
.23500
1048
.24000
1049
.24500
1050 133.25000
1051
.25500
1052
.26000
1053
.26500
1054
.27000
1055
.27500
1056
.28000
1057
.28500
1058
.29000
1059
.29500
1060
.30000
1061
.30500
1062
.31000
1063
.31500
1064
.32000
1065
.32500
1066
.33000
1067
.33500
1068
.34000
1069
.34500
1070
.35000
1071
.35500
1072
.36000
1073
.36500
1074
.37000
1075
.37500
1076
.38000
1077
.38500
1078
.39000
1079
.39500
1080
.40000
1081
.40500
1082
.41000
1083
.41500
1084
.42000
1085
.42500
1086
.43000
1087
.43500
1088
.44000
1089
.44500
1090
.45000
1091
.45500
1092
.46000
1093
.46500
1094
.47000
1095
.47500
1096
.48000
1097
.48500
1098
.49000
1099
.49500
Chan.
Num.
Freq.
(MHz)
1100 133.50000
1101
.50500
1102
.51000
1103
.51500
1104
.52000
1105
.52500
11 06
.53000
1107
.53500
1108
.54000
1109
.54500
1110
.55000
1111
.55500
1112
.56000
1113
.56500
1114
.57000
1115
.57500
1116
.58000
1117
.58500
1118
.59000
1119
.59500
1120
.60000
1121
.60500
1122
.61000
1123
.61500
1124
.62000
1125
.62500
1126
.63000
1127
.63500
1128
.64000
1129
.64500
1130
.65000
1131
.65500
1132
.66000
1133
.66500
1134
.67000
1135
.67500
1136
.68000
1137
.68500
1138
.69000
1139
.69500
1140
.70000
1141
.70500
1142
.71000
1143
.71500
1144
.72000
1145
.72500
1146
.73000
1147
.73500
1148
.74000
1149
.74500
1150 133.75000
1151
.75500
1152
.76000
1153
.76500
1154
.77000
1155
.77500
1156
.78000
1157
.78500
1158
.79000
1159
.79500
1160
.80000
1161
.80500
1162
.81000
1163
.81500
1164
.82000
1165
.82500
1166
.83000
1167
.83500
1168
.84000
1169
.84500
1170
.85000
1171
.85500
1172
.86000
1173
.86500
1174
.87000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
1175 133.87500
1176
.88000
1177
.88500
1178
.89000
1179
.89500
1180
.90000
1181
.90500
1182
.91000
1183
.91500
1184
.92000
1185
.92500
1186
.93000
1187
.93500
1188
.94000
1189
.94500
1190
.95000
1191
.95500
1192
.96000
1193
.96500
1194
.97000
1195
.97500
1196
.98000
1197
.98500
1198
.99000
1199
.99500
1200 134.00000
1201
.00500
1202
.01000
1203
.01500
1204
.02000
1205
.02500
1206
.03000
1207
.03500
1208
.04000
1209
.04500
1210
.05000
1211
.05500
1212
.06000
1213
.06500
1214
.07000
1215
.07500
1216
.08000
1217
.08500
1218
.09000
1219
.09500
1220
.10000
1221
.10500
1222
.11000
1223
.11500
1224
.12000
1225
.12500
1226
.13000
1227
.13500
1228
.14000
1229
.14500
1230
.15000
1231
.15500
1232
.16000
1233
.16500
1234
.17000
1235
.17500
1236
.18000
1237
.18500
1238
.19000
1239
.19500
1240
.20000
1241
.20500
1242
.21000
1243
.21500
1244
.22000
1245
.22500
1246
.23000
1247
.23500
1248
.24000
1249
.24500
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
134.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
134.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
1-1
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
1325 134.62500
1326
.63000
1327
.63500
1328
.64000
1329
.64500
1330
.65000
1331
.65500
1332
.66000
1333
.66500
1334
.67000
1335
.67500
1336
.68000
1337
.68500
1338
.69000
1339
.69500
1340
.70000
1341
.70500
1342
.71000
1343
.71500
1344
.72000
1345
.72500
1346
.73000
1347
.73500
1348
.74000
1349
.74500
1350 134.75000
1351
.75500
1352
.76000
1353
.76500
1354
.77000
1355
.77500
1356
.78000
1357
.78500
1358
.79000
1359
.79500
1360
.80000
1361
.80500
1362
.81000
1363
.81500
1364
.82000
1365
.82500
1366
.83000
1367
.83500
1368
.84000
1369
.84500
1370
.85000
1371
.85500
1372
.86000
1373
.86500
1374
.87000
1375
.87500
1376
.88000
1377
.88500
1378
.89000
1379
.89500
1380
.90000
1381
.90500
1382
.91000
1383
.91500
1384
.92000
1385
.92500
1386
.93000
1387
.93500
1388
.94000
1389
.94500
1390
.95000
1391
.95500
1392
.96000
1393
.96500
1394
.97000
1395
.97500
1396
.98000
1397
.98500
1398
.99000
1399
.99500
1-2
Chan.
Num.
Freq.
(MHz)
1400 135.00000
1401
.00500
1402
.01000
1403
.01500
1404
.02000
1405
.02500
1406
.03000
1407
.03500
1408
.04000
1409
.04500
1410
.05000
1411
.05500
1412
.06000
1413
.06500
1414
.07000
1415
.07500
1416
.08000
1417
.08500
1418
.09000
1419
.09500
1420
.10000
1421
.10500
1422
.11000
1423
.11500
1424
.12000
1425
.12500
1426
.13000
1427
.13500
1428
.14000
1429
.14500
1430
.15000
1431
.15500
1432
.16000
1433
.16500
1434
.17000
1435
.17500
1436
.18000
1437
.18500
1438
.19000
1439
.19500
1440
.20000
1441
.20500
1442
.21000
1443
.21500
1444
.22000
1445
.22500
1446
.23000
1447
.23500
1448
.24000
1449
.24500
1450 135.25000
1451
.25500
1452
.26000
1453
.26500
1454
.27000
1455
.27500
1456
.28000
1457
.28500
1458
.29000
1459
.29500
1460
.30000
1461
.30500
1462
.31000
1463
.31500
1464
.32000
1465
.32500
1466
.33000
14 67
.33500
1468
.34000
1469
.34500
1470
.35000
1471
.35500
1472
.36000
1473
.36500
1474
.37000
Chan.
Num.
Freq.
(MHz)
1475 135.37500
1476
.38000
1477
.38500
1478
.39000
1479
.39500
1480
.40000
1481
.40500
1482
.41000
1483
.41500
1484
.42000
1485
.42500
1486
.43000
1487
.43500
1488
.44000
1489
.44500
1490
.45000
1491
.45500
1492
.46000
1493
.46500
1494
.47000
1495
.47500
1496
.48000
1497
.48500
1498
.49000
1499
.49500
1500 135.50000
1501
.50500
1502
.51000
1503
.51500
1504
.52000
1505
.52500
1506
.53000
1507
.53500
1508
.54000
1509
.54500
1510
.55000
1511
.55500
1512
.56000
1513
.56500
1514
.57000
1515
.57500
1516
.58000
1517
.58500
1518
.59000
1519
.59500
1520
.60000
1521
.60500
1522
.61000
1523
.61500
1524
.62000
1525
.62500
1526
.63000
1527
.63500
1528
.64000
1529
.64500
1530
.65000
1531
.65500
1532
.66000
1533
.66500
1534
.67000
1535
.67500
1536
.68000
1537
.68500
1538
.69000
1539
.69500
1540
.70000
1541
.70500
1542
.71000
1543
.71500
1544
.72000
1545
.72500
1546
.73000
1547
.73500
1548
.74000
1549
.74500
Chan.
Num.
Freq.
(MHz)
1550 13 5.75000
1551
.75500
1552
.76000
1553
.76500
1554
.77000
1555
.77500
1556
.78000
1557
.78500
1558
.79000
1559
.7 9500
1560
.80000
1561
.80500
1562
.81000
1563
.81500
1564
.82000
1565
.82500
1566
.83000
1567
.83500
1568
.84000
1569
.84500
1570
.85000
1571
.85500
1572
.86000
1573
.86500
1574
.87000
1575
.87500
1576
.88000
1577
.88500
1578
.89000
1579
.89500
1580
.90000
1581
.90500
1582
.91000
1583
.91500
1584
.92000
1585
.92500
1586
.93000
1587
.93500
1588
.94000
1589
.94500
1590
.95000
1591
.95500
1592
.96000
1593
.96500
1594
.97000
1595
.97500
1596
.98000
1597
.98500
1598
.99000
1599
.99500
1600 136.00000
1601
.00500
1602
.01000
1603
.01500
1604
.02000
1605
.02500
1606
.03000
1607
.03500
1608
.04000
1609
.04500
1610
.05000
1611
.05500
1612
.06000
1613
.06500
1614
.07000
1615
.07500
1616
.08000
1617
.08500
1618
.09000
1619
.09500
1620
.10000
1621
.10500
1622
.11000
1623
.11500
1624
.12000
Chan.
Num.
Freq.
(MHz)
1625 136.12500
1626
.13000
1627
.13500
1628
.14000
1629
.14500
1630
.15000
1631
.15500
1632
.16000
1633
.16500
1634
.17000
1635
.17500
1636
.18000
1637
.18500
1638
.19000
1639
.19500
1640
.20000
1641
.20500
1642
.21000
1643
.2 1500
1644
.22000
1645
.22500
1646
.23000
1647
.23500
1648
.24000
1649
.24500
1650 136.25000
1651
.25500
1652
.2 6000
1653
.26500
1654
.27000
1655
.27500
1656
.28000
1657
.28500
1658
.29000
1659
.29500
1660
.30000
1661
.30500
1662
.31000
1663
.31500
1664
.32000
1665
.32500
1666
.33000
1667
.33500
1668
.34000
1669
.34500
1670
.35000
1671
.35500
1672
.36000
1673
.36500
1674
.37000
1675
.37500
1676
.38000
1677
.38500
1678
.39000
1679
.39500
1680
.40000
1681
.40500
1682
.41000
1683
.41500
1684
.42000
1685
.42500
1686
.43000
1687
.43500
1688
.44000
1689
.44500
1690
.45000
1691
.45500
1692
.46000
1693
.46500
1694
.47000
1695
.47500
1696
.48000
1697
.48500
1698
.49000
1699
.49500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
1700 136.50000
1701
.50500
1702
.51000
1703
.51500
1704
.52000
1705
.52500
1706
.53000
1707
.53500
1708
.54000
1709
.54500
1710
.55000
1711
.55500
1712
.56000
1713
.56500
1714
.57000
1715
.57500
1716
.58000
1717
.58500
1718
.59000
1719
.59500
1720
.60000
1721
.60500
1722
.61000
1723
.61500
1724
.62000
1725
.62500
1726
.63000
1727
.63500
1728
.64000
1729
.64500
1730
.65000
1731
.65500
1732
.66000
1733
.66500
1734
.67000
1735
.67500
1736
.6 8000
1737
.68500
1738
.69000
1739
.69500
1740
.70000
1741
.70500
1742
.71000
1743
.71500
1744
.72000
1745
.72500
1746
.73000
1747
.73500
1748
.74000
1749
.74500
1750 136.75000
1751
.75500
1752
.76000
1753
.76500
1754
.77000
1755
.77500
1756
.78000
1757
.78500
1758
.79000
1759
.79500
1760
.80000
1761
.80500
1762
.81000
1763
.81500
1764
.82000
1765
.82500
1766
.83000
1767
.83500
1768
.84000
1769
.84500
1770
.85000
1771
.85500
1772
.86000
1773
.86500
1774
.87000
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
136.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
137.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.1 0000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
1850 137.25000
1851
.25500
1852
.26000
1853
.26500
1854
.27000
1855
.27500
1856
.28000
1857
.28500
1858
.29000
1859
.29500
1860
.30000
1861
.30500
1862
.31000
1863
.31500
1864
.32000
1865
.32500
1866
.33000
1867
.33500
1868
.34000
1869
.34500
1870
.35000
1871
.35500
1872
.36000
1873
.36500
1874
.37000
1875
.37500
1876
.38000
1877
.38500
1878
.39000
1879
.39500
1880
.40000
1881
.40500
1882
.41000
1883
.41500
1884
.42000
1885
.42500
1886
.43000
1887
.43500
1888
.44000
1889
.44500
1890
.45000
1891
.45500
1892
.46000
1893
.46500
1894
.47000
1895
.47500
1896
.48000
1897
.48500
1898
.49000
1899
.49500
1900 137.50000
1901
.50500
1902
.51000
1903
.51500
1904
.52000
1905
.52500
1906
.53000
1907
.53500
1908
.54000
1909
.54500
1910
.55000
1911
.55500
1912
.56000
1913
.56500
1914
.57000
1915
.57500
1916
.58000
1917
.58500
1918
.59000
1919
.59500
1920
.60000
1921
.60500
1922
.61000
1923
.61500
1924
.62000
Chan.
Num.
Freq.
(MHz)
1925 137.62500
1926
.63000
1927
.63500
1928
.64000
1929
.64500
1930
.65000
1931
.65500
1932
.66000
1933
.66500
1934
.67000
1935
.67500
1936
.68000
1937
.68500
1938
.69000
1939
.69500
1940
.70000
1941
.70500
1942
.71000
1943
.71500
1944
.72000
1945
.72500
1946
.73000
1947
.73500
1948
.74000
1949
.74500
1950 137.75000
1951
.75500
1952
.76000
1953
.76500
1954
.77000
1955
.77500
1956
.78000
1957
.78500
1958
.79000
1959
.79500
1960
.80000
1961
.80500
1962
.81000
1963
.81500
1964
.82000
1965
.82500
1966
.83000
1967
.83500
1968
.84000
1969
.84500
1970
.85000
1971
.85500
1972
.86000
1973
.86500
1974
.87000
1975
.87500
1976
.88000
1977
.88500
1978
.89000
1979
.89500
1980
.90000
1981
.90500
1982
.91000
1983
.91500
1984
.92000
1985
.92500
1986
.93000
1987
.93500
1988
.94000
1989
.94500
1990
.95000
1991
.95500
1992
.96000
1993
.96500
1994
.97000
1995
.97500
1996
.98000
1997
.98500
1998
.99000
1999
.99500
Chan.
Num.
Freq.
(MHz)
2000 138.00000
2001
.00500
2002
.01000
2003
.01500
2004
.02000
2005
.02500
2006
.03000
2007
.03500
2008
.04000
2009
.04500
2010
.05000
2011
.05500
2012
.06000
2013
.06500
2014
.07000
2015
.07500
2016
.08000
2017
.08500
2018
.09000
2019
.09500
2020
.10000
2021
.10500
2022
.11000
2023
.11500
2024
.12000
2025
.12500
2026
.13000
2027
.13500
2028
.14000
2029
.14500
2030
.15000
2031
.15500
2032
.16000
2033
.16500
2034
.17000
2035
.17500
2036
.18000
2037
.18500
2038
.19000
2039
.19500
2040
.20000
2041
.20500
2042
.21000
2043
.21500
2044
.22000
2045
.22500
2046
.23000
2047
.23500
2048
.24000
2049
.24500
2050 138.25000
2051
.25500
2052
.26000
2053
.26500
2054
.27000
2055
.27500
2056
.28000
2057
.28500
2058
.29000
2059
.29500
2060
.30000
2061
.30500
2062
.31000
2063
.31500
2064
.32000
2065
.32500
2066
.33000
2067
.33500
2068
.34000
2069
.34500
2070
.35000
2071
.35500
2072
.36000
2073
.36500
2074
.37000
Chan.
Num.
Freq.
(MHz)
2075 138.37500
2076
.38000
2077
.38500
2078
.39000
2079
.39500
2080
.40000
2081
.40500
2082
.41000
2083
.41500
2084
.42000
2085
.42500
2086
.43000
2087
.43500
2088
.44000
2089
.44500
2090
.45000
2091
.45500
2092
.46000
2093
.46500
2094
.47000
2095
.47500
2096
.48000
2097
.48500
2098
.49000
2099
.49500
2100 138.50000
2101
.50500
2102
.51000
2103
.51500
2104
.52000
2105
.52500
2106
.53000
2107
.53500
2108
.54000
2109
.54500
2110
.55000
2111
.55500
2112
.56000
2113
.56500
2114
.57000
2115
.57500
2116
.58000
2117
.58500
2118
.59000
2119
.59500
2120
.60000
2121
.60500
2122
.61000
2123
.61500
2124
.62000
2125
.62500
2126
.63000
2127
.63500
2128
.64000
2129
.64500
2130
.65000
2131
.65500
2132
.66000
2133
.66500
2134
.67000
2135
.67500
2136
.68000
2137
.68500
2138
.69000
2139
.69500
2140
.70000
2141
.70500
2142
.71000
2143
.71500
2144
.72000
2145
.72500
2146
.73000
2147
.73500
2148
.74000
2149
.74500
Chan.
Num.
Freq.
(MHz)
2150 138.75000
2151
.75500
2152
.76000
2153
.76500
2154
.77000
2155
.77500
2156
.78000
2157
.78500
2158
.79000
2159
.79500
2160
.80000
2161
.80500
2162
.81000
2163
.81500
2164
.82000
2165
.82500
2166
.83000
2167
.83500
2168
.84000
2169
.84500
2170
.85000
2171
.85500
2172
.86000
2173
.86500
2174
.87000
2175
.87500
2176
.88000
2177
.88500
2178
.89000
2179
.89500
2180
.90000
2181
.90500
2182
.91000
2183
.91500
2184
.92000
2185
.92500
2186
.93000
2187
.93500
2188
.94000
2189
.94500
2190
.95000
2191
.95500
2192
.96000
2193
.96500
2194
.97000
2195
.97500
2196
.98000
2197
.98500
2198
.99000
2199
.99500
2200 139.00000
2201
.00500
2202
.01000
2203
.01500
2204
.02000
2205
.02500
2206
.03000
2207
.03500
2208
.04000
2209
.04500
2210
.05000
2211
.05500
2212
.06000
2213
.06500
2214
.07000
2215
.07500
2216
.08000
2217
.08500
2218
.09000
2219
.09500
2220
.10000
2221
.10500
2222
.11000
2223
.11500
2224
.12000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
2225 139.12500
2226
.13000
2227
.13500
2228
.14000
2229
.14500
2230
.15000
2231
.15500
2232
.16000
2233
.16500
2234
.17000
2235
.17500
2236
.18000
2237
.18500
2238
.19000
2239
.19500
2240
.20000
2241
.20500
2242
.21000
2243
.21500
2244
.22000
2245
.22500
2246
.23000
2247
.23500
2248
.24000
2249
.24500
2250 139.25000
2251
.25500
2252
.26000
2253
.26500
2254
.27000
2255
.27500
2256
.28000
2257
.28500
2258
.29000
2259
.29500
2260
.30000
2261
.30500
2262
.31000
2263
.31500
2264
.32000
2265
.32500
2266
.33000
2267
.33500
2268
.34000
2269
.34500
2270
.35000
2271
.35500
2272
.36000
2273
.36500
2274
.37000
2275
.37500
2276
.38000
2277
.38500
2278
.39000
2279
.39500
2280
.40000
2281
.40500
2282
.41000
2283
.41500
2284
.42000
2285
.42500
2286
.43000
2287
.43500
2288
.44000
2289
.44500
2290
.45000
2291
.45500
2292
.46000
2293
.46500
2294
.47000
2295
.47500
2296
.48000
2297
.48500
2298
.49000
2299
.49500
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
139.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
139.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
1-3
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
2375 139.87500
2376
.88000
2377
.88500
2378
.89000
2379
.89500
2380
.90000
2381
.90500
2382
.91000
2383
.91500
2384
.92000
2385
.92500
2386
.9 3000
2387
.93500
2388
.94000
2389
.94500
2390
.95000
2391
.95500
2392
.96000
2393
.96500
2394
.97000
2395
.97500
2396
.98000
2397
.98500
2398
.99000
2399
.99500
2400 140.00000
2401
.00500
2402
.01000
2403
.01500
2404
.02000
2405
.02500
2406
.03000
2407
.03500
2408
.04000
2409
.04500
2410
.05000
2411
.05500
2412
.06000
2413
.06500
2414
.07000
2415
.07500
2416
.08000
2417
.08500
2418
.09000
2419
.09500
2420
.10000
2421
.10500
2422
.11000
2423
.11500
2424
.12000
2425
.12500
2426
.13000
2427
.13500
2428
.14000
2429
.14500
2430
.15000
2431
.15500
2432
.16000
2433
.16500
2434
.17000
2435
.17500
2436
.18000
2437
.18500
2438
.19000
2439
.19500
2440
.20000
2441
.20500
2442
.21000
2443
.21500
2444
.22000
2445
.22500
2446
.23000
2447
.23500
2448
.24000
2449
.24500
1-4
Chan.
Num.
Freq.
(MHz)
2450 140.25000
2451
.25500
2452
.26000
2453
.26500
2454
.27000
2455
.27500
2456
.28000
2457
.28500
2458
.29000
2459
.29500
2460
.30000
2461
.30500
2462
.31000
2463
.31500
2464
.32000
2465
.32500
2466
.33000
2467
.33500
2468
.34000
2469
.34500
2470
.3 5000
2471
.35500
2472
.36000
2473
.36500
2474
.37000
2475
.37500
2476
.38000
2477
.38500
2478
.39000
2479
.3 9500
2480
.40000
2481
.40500
2482
.41000
2483
.41500
2484
.42000
2485
.42500
2486
.43000
2487
.43500
2488
.44000
2489
.44500
2490
.45000
2491
.45500
2492
.46000
2493
.46500
2494
.47000
2495
.47500
2496
.48000
2497
.48500
2498
.49000
2499
.49500
2500 140.50000
2501
.50500
2502
.51000
2503
.51500
2504
.52000
2505
.52500
2506
.53000
2507
.53500
2508
.54000
2509
.54500
2510
.55000
2511
.55500
2512
.56000
2513
.56500
2514
.57000
2515
.57500
2516
.58000
2517
.58500
2518
.59000
2519
.59500
2520
.60000
2521
.60500
2522
.61000
2523
.61500
2524
.62000
Chan.
Num.
Freq.
(MHz)
2525 140.62500
2526
.63000
2527
.63500
2528
.64000
2529
.64500
2530
.65000
2531
.65500
2532
.66000
2533
.66500
2534
.67000
2535
.67500
2536
.68000
2537
.68500
2538
.69000
2539
.69500
2540
.70000
2541
.70500
2542
.71000
2543
.71500
2544
.72000
2545
.72500
2546
.73000
2547
.73500
2548
.74000
2549
.74500
2550 140.75000
2551
.75500
2552
.76000
2553
.76500
2554
.77000
2555
.77500
2556
.78000
2557
.78500
2558
.79000
2559
.79500
2560
.80000
2561
.80500
2562
.81000
2563
.8 1500
2564
.82000
2565
.82500
2566
.83000
2567
.83500
2568
.84000
2569
.84500
2570
.85000
2571
.85500
2572
.86000
2573
.86500
2574
.87000
2575
.87500
2576
.88000
2577
.88500
2578
.89000
2579
.89500
2580
.90000
2581
.90500
2582
.91000
2583
.91500
2584
.92000
2585
.92500
2586
.93000
2587
.93500
2588
.94000
2589
.94500
2590
.95000
2591
.95500
2592
.96000
2593
.96500
2594
.97000
2595
.97500
2596
.98000
2597
.98500
2598
.99000
2599
.99500
Chan.
Num.
Freq.
(MHz)
2600 141.00000
2601
.00500
2602
.01000
2603
.01500
2604
.02000
2605
.02500
2606
.03000
2607
.03500
2608
.04000
2609
.04500
2610
.05000
2611
.05500
2612
.06000
2613
.06500
2614
.07000
2615
.07500
2616
.08000
2617
.08500
2618
.09000
2619
.09500
2620
.10000
2621
.10500
2622
.11000
2623
.11500
2624
.12000
2625
.12500
2626
.13000
2627
.13500
2628
.14000
2629
.14500
2630
.15000
2631
.15500
2632
.16000
2633
.16500
2634
.17000
2635
.17500
2636
.18000
2637
.18500
2638
.19000
2639
.19500
2640
.20000
2641
.20500
2642
.21000
2643
.21500
2644
.22000
2645
.22500
2646
.23000
2647
.2 3500
2648
.24000
2649
.24500
2650 141.25000
2651
.25500
2652
.26000
2653
.26500
2654
.27000
2655
.27500
2656
.28000
2657
.28500
2658
.29000
2659
.29500
2660
.30000
2661
.30500
2662
.31000
2663
.31500
2664
.32000
2665
.32500
2666
.33000
2667
.33500
2668
.34000
2669
.34500
2670
.35000
2671
.35500
2672
.36000
2673
.36500
2674
.37000
Chan.
Num.
Freq.
(MHz)
2675 141.37500
2676
.38000
2677
.38500
2678
.39000
2679
.39500
2680
.40000
2681
.40500
2682
.41000
2683
.41500
2684
.42000
2685
.42500
2686
.43000
2687
.43500
2688
.44000
2689
.44500
2690
.45000
2691
.45500
2692
.46000
2693
.46500
2694
.47000
2695
.47500
2696
.48000
2697
.48500
2698
.49000
2699
.49500
2700 141.50000
2701
.50500
2702
.51000
2703
.51500
2704
.52000
2705
.52500
2706
.53000
2707
.53500
2708
.54000
2709
.54500
2710
.55000
2711
.55500
2712
.56000
2713
.56500
2714
.57000
2715
.57500
2716
.58000
2717
.58500
2718
.59000
2719
.59500
2720
.60000
2721
.60500
2722
.61000
2723
.61500
2724
.62000
2725
.62500
2726
.63000
2727
.63500
2728
.64000
2729
.64500
2730
.65000
2731
.65500
2732
.66000
2733
.66500
27 34
.67000
2735
.67500
2736
.68000
2737
.68500
2738
.69000
2739
.69500
2740
.70000
2741
.70500
2742
.71000
2743
.71500
2744
.72000
2745
.72500
2746
.73000
2747
.73500
2748
.74000
2749
.74500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
2750 141.75000
2751
.75500
2752
.76000
2753
.76500
2754
.77000
2755
.77500
2756
.78000
2757
.78500
2758
.79000
2759
.79500
2760
.80000
2761
.80500
2762
.81000
2763
.81500
2764
.82000
2765
.82500
2766
.83000
2767
.83500
2768
.84000
2769
.84500
2770
.85000
2771
.85500
2772
.86000
2773
.86500
2774
.87000
2775
.87500
2776
.88000
2777
.88500
2778
.89000
2779
.89500
2780
.90000
2781
.90500
2782
.91000
2783
.91500
2784
.92000
2785
.92500
2786
.93000
2787
.93500
2788
.94000
2789
.94500
2790
.95000
2791
.95500
2792
.96000
2793
.96500
2794
.97000
2795
.97500
2796
.98000
2797
.98500
2798
.99000
2799
.99500
2800 142.00000
2801
.00500
2802
.01000
2803
.01500
2804
.02000
2805
.02500
2806
.03000
2807
.03500
2808
.04000
2809
.04500
2810
.05000
2811
.05500
2812
.06000
2813
.06500
2814
.07000
2815
.07500
2816
.08000
2817
.08500
28 18
.09000
2819
.09500
2820
.10000
2821
.10500
2822
.11000
2823
.11500
2824
.12000
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
142.12500
.1 3000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
142.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
2900 142.50000
2901
.50500
2902
.51000
2903
.51500
2904
.52000
2905
.52500
2906
.53000
2907
.53500
2908
.54000
2909
.54500
2910
.55000
2911
.55500
2912
.56000
2913
.56500
2914
.57000
2915
.57500
2916
.58000
2917
.58500
2918
.59000
2919
.59500
2920
.60000
2921
.60500
2922
.61000
2923
.61500
2924
.62000
2925
.62500
2926
.63000
2927
.63500
2928
.64000
2929
.64500
2930
.65000
2931
.65500
2932
.66000
2933
.66500
2934
.67000
2935
.67500
2936
.68000
2937
.68500
2938
.69000
2939
.69500
2940
.70000
2941
.70500
2942
.71000
2943
.71500
2944
.72000
2945
.72500
2946
.73000
2947
.73500
2948
.74000
2949
.74500
2950 142.75000
2951
.75500
2952
.76000
2953
.76500
2954
.77000
2955
.77500
2956
.78000
2957
.78500
2958
.79000
2959
.79500
2960
.80000
2961
.80500
2962
.81000
2963
.81500
2964
.82000
2965
.82500
2966
.83000
2967
.83500
2968
.84000
2969
.84500
2970
.85000
2971
.85500
2972
.86000
2973
.86500
2974
.87000
Chan.
Num.
Freq.
(MHz)
2975 142.87500
2976
.88000
2977
.88500
2978
.89000
2979
.89500
2980
.90000
2981
.90500
2982
.91000
2983
.91500
2984
.92000
2985
.92500
2986
.93000
2987
.93500
2988
.94000
2989
.94500
2990
.95000
2991
.95500
2992
.96000
2993
.96500
2994
.97000
2995
.97500
2996
.98000
2997
.98500
2998
.99000
2999
.99500
3000 143.00000
3001
.00500
3002
.01000
3003
.01500
3004
.02000
3005
.02500
3006
.03000
3007
.03500
3008
.04000
3009
.04500
3010
.05000
3011
.05500
3012
.06000
3013
.06500
3014
.07000
3015
.07500
3016
.08000
3017
.08500
3018
.09000
3019
.09500
3020
.10000
3021
.10500
3022
.11000
3023
.11500
3024
.12000
3025
.12500
3026
.13000
3027
.13500
3028
.14000
3029
.14500
3030
.15000
3031
.15500
3032
.16000
3033
.16500
3034
.17000
3035
.17500
3036
.18000
3037
.18500
3038
.19000
3039
.19500
3040
.20000
3041
.20500
3042
.21000
3043
.21500
3044
.22000
3045
.22500
3046
.23000
3047
.23500
3048
.24000
3049
.24500
Chan.
Num.
Freq.
(MHz)
3050 143.25000
3051
.25500
3052
.26000
3053
.26500
3054
.27000
3055
.27500
3056
.28000
3057
.28500
3058
.29000
3059
.29500
3060
.30000
3061
.30500
3062
.31000
3063
.31500
3064
.32000
3065
.32500
3066
.33000
3067
.33500
3068
.34000
3069
.34500
3070
.35000
3071
.35500
3072
.36000
3073
.36500
3074
.37000
3075
.37500
3076
.38000
3077
.38500
3078
.39000
3079
.39500
3080
.40000
3081
.40500
3082
.41000
3083
.41500
3084
.42000
3085
.42500
3086
.43000
3087
.43500
3088
.44000
3089
.44500
3090
.45000
3091
.45500
3092
.46000
3093
.46500
3094
.47000
3095
.47500
3096
.48000
3097
.48500
3098
.49000
3099
.49500
3100 143.50000
3101
.50500
3102
.51000
3103
.51500
3104
.52000
3105
.52500
3106
.53000
3107
.53500
3108
.54000
3109
.54500
3110
.55000
3111
.55500
3112
.56000
3113
.56500
3114
.57000
3115
.57500
3116
.58000
3117
.58500
3118
.59000
3119
.59500
3120
.60000
3121
.60500
3122
.61000
3123
.61500
3124
.62000
Chan.
Num.
Freq.
(MHz)
3125 143.62500
3126
.63000
3127
.63500
3128
.64000
3129
.64500
3130
.65000
3131
.65500
3132
.66000
3133
.66500
3134
.67000
3135
.67500
3136
.68000
3137
.68500
3138
.69000
3139
.69500
3140
.70000
3141
.70500
3142
.71000
3143
.71500
3144
.72000
3145
.72500
3146
.73000
3147
.73500
3148
.74000
3149
.74500
3150 143.75000
3151
.75500
3152
.76000
3153
.76500
3154
.77000
3155
.77500
3156
.78000
3157
.78500
3158
.79000
3159
.79500
3160
.80000
3161
.80500
3162
.81000
3163
.81500
3164
.82000
3165
.82500
3166
.83000
3167
.83500
3168
.84000
3169
.84500
3170
.85000
3171
.85500
3172
.86000
3173
.86500
3174
.87000
3175
.87500
3176
.88000
3177
.88500
3178
.89000
3179
.89500
3180
.90000
3181
.90500
3182
.91000
3183
.91500
3184
.92000
3185
.92500
3186
.93000
3187
.93500
3188
.94000
3189
.94500
3190
.95000
3191
.95500
3192
.96000
3193
.96500
3194
.97000
3195
.97500
3196
.98000
3197
.98500
3198
.99000
3199
.99500
Chan.
Num.
Freq.
(MHz)
3200 144.00000
3201
.00500
3202
.01000
3203
.01500
3204
.02000
3205
.02500
3206
.03000
3207
.03500
3208
.04000
3209
.04500
3210
.05000
3211
.05500
3212
.06000
3213
.06500
3214
.07000
3215
.07500
3216
.08000
3217
.08500
3218
.09000
3219
.09500
3220
.10000
3221
.10500
3222
.11000
3223
.11500
3224
.12000
3225
.12500
3226
.13000
3227
.13500
3228
.14000
3229
.14500
3230
.15000
3231
.15500
3232
.16000
3233
.16500
3234
.17000
3235
.17500
3236
.18000
3237
.18500
3238
.19000
3239
.19500
3240
.20000
3241
.20500
3242
.21000
3243
.21500
3244
.22000
3245
.22500
3246
.23000
3247
.23500
3248
.24000
3249
.24500
3250 144.25000
3251
.25500
3252
.26000
3253
.26500
3254
.27000
3255
.27500
3256
.28000
3257
.28500
3258
.29000
3259
.29500
3260
.30000
3261
.30500
3262
.31000
3263
.31500
3264
.32000
3265
.32500
3266
.33000
3267
.33500
3268
.34000
3269
.34500
3270
.35000
3271
.35500
3272
.36000
3273
.36500
3274
.37000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
3275 144.37500
3276
.38000
3277
.38500
3278
.39000
3279
.39500
3280
.40000
3281
.40500
3282
.41000
3283
.41500
3284
.42000
3285
.42500
3286
.43000
3287
.43500
3288
.44000
3289
.44500
3290
.45000
3291
.45500
3292
.46000
3293
.46500
3294
.47000
3295
.47500
3296
.48000
3297
.48500
3298
.49000
3299
.49500
3300 144.50000
3301
.50500
3302
.51000
3303
.51500
3304
.52000
3305
.52500
3306
.53000
3307
.53500
3308
.54000
3309
.54500
3310
.55000
3311
.55500
3312
.56000
3313
.56500
3314
.57000
3315
.57500
3316
.58000
3317
.58500
3318
.59000
3319
.59500
3320
.60000
3321
.60500
3322
.61000
3323
.61500
3324
.62000
3325
.62500
3326
.63000
3327
.63500
3328
.64000
3329
.64500
3330
.65000
3331
.65500
3332
.66000
3333
.66500
3334
.67000
3335
.67500
3336
.68000
3337
.68500
3338
.69000
3339
.69500
3340
.70000
3341
.70500
3342
.71000
3343
.71500
3344
.72000
3345
.72500
3346
.73000
3347
.73500
3348
.74000
3349
.74500
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
144.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
145.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
1-5
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
3425 145.12500
3426
.13000
3427
.13500
3428
.14000
3429
.14500
3430
.15000
3431
.15500
3432
.16000
3433
.16500
3434
.17000
3435
.17500
3436
.18000
3437
.18500
3438
.19000
3439
.19500
3440
.20000
3441
.20500
3442
.21000
3443
.21500
3444
.22000
3445
.22500
3446
.23000
3447
.23500
3448
.24000
3449
.24500
3450 145.25000
3451
.25500
3452
.26000
3453
.26500
3454
.27000
3455
.27500
3456
.28000
3457
.28500
3458
.29000
3459
.29500
3460
.30000
3461
.30500
3462
.31000
3463
.31500
3464
.32000
3465
.32500
3466
.33000
3467
.33500
3468
.34000
3469
.34500
3470
.35000
3471
.35500
3472
.36000
3473
.36500
3474
.37000
3475
.37500
3476
.38000
3477
.38500
3478
.39000
3479
.39500
3480
.4 0000
3481
.40500
3482
.41000
3483
.41500
3484
.42000
3485
.42500
3486
.43000
3487
.43500
3488
.44000
3489
.44500
3490
.45000
3491
.45500
3492
.46000
3493
.46500
3494
.47000
3495
.47500
3496
.48000
3497
.48500
3498
.49000
3499
.49500
1-6
Chan.
Num.
Freq.
(MHz)
3500 145.50000
3501
.50500
3502
.51000
3503
.51500
3504
.52000
3505
.52500
3506
.53000
3507
.53500
3508
.54000
3509
.54500
3510
.55000
3511
.55500
3512
.56000
3513
.56500
3514
.57000
3515
.57500
3516
.58000
3517
.58500
3518
.59000
3519
.59500
3520
.60000
3521
.60500
3522
.61000
3523
.61500
3524
.62000
3525
.62500
3526
.63000
3527
.63500
3528
.64000
3529
.64500
3530
.65000
3531
.65500
3532
.66000
3533
.66500
3534
.67000
3535
.67500
3536
.68000
3537
.68500
3538
.69000
3539
.69500
3540
.70000
3541
.70500
3542
.71000
3543
.71500
3544
.72000
3545
.72500
3546
.73000
3547
.73500
3548
.74000
3549
.74500
3550 145.75000
3551
.75500
3552
.76000
3553
.76500
3554
.77000
3555
.77500
3556
.78000
3557
.78500
3558
.79000
3559
.79500
3560
.80000
3561
.80500
3562
.81000
3563
.81500
3564
.8 2000
3565
.82500
3566
.83000
3567
.83500
3568
.84000
3569
.84500
3570
.85000
3571
.85500
3572
.86000
3573
.86500
3574
.87000
Chan.
Num.
Freq.
(MHz)
3575 145.87500
3576
.88000
3577
.88500
3578
.89000
3579
.89500
3580
.90000
3581
.90500
3582
.91000
3583
.91500
3584
.92000
3585
.92500
3586
.93000
3587
.93500
3588
.94000
3589
.94500
3590
.95000
3591
.95500
3592
.96000
3593
.96500
3594
.97000
3595
.97500
3596
.98000
3597
.98500
3598
.99000
3599
.99500
3600 146.00000
3601
.00500
3602
.01000
3603
.01500
3604
.02000
3605
.02500
3606
.03000
3607
.03500
3608
.04000
3609
.04500
3610
.05000
3611
.05500
3612
.06000
3613
.06500
3614
.07000
3615
.07500
3616
.08000
3617
.08500
3618
.09000
3619
.09500
3620
.10000
3621
.10500
3622
.11000
3623
.11500
3624
.12000
3625
.12500
3626
.13000
3627
.13500
3628
.14000
3629
.14500
3630
.15000
3631
.15500
3632
.16000
3633
.16500
3634
.17000
3635
.17500
3636
.18000
3637
.18500
3638
.19000
3639
.19500
3640
.20000
3641
.20500
3642
.21000
3643
.21500
3644
.22000
3645
.22500
3646
.23000
3647
.23500
3648
.2 4000
3649
.24500
Chan.
Num.
Freq.
(MHz)
3650 146.25000
3651
.25500
3652
.26000
3653
.26500
3654
.27000
3655
.27500
3656
.28000
3657
.28500
3658
.29000
3659
.29500
3660
.30000
3661
.30500
3662
.31000
3663
.31500
3664
.32000
3665
.32500
3666
.33000
3667
.33500
3668
.34000
3669
.34500
3670
.35000
3671
.35500
3672
.36000
3673
.36500
3674
.37000
3675
.37500
3676
.38000
3677
.38500
3678
.39000
3679
.39500
3680
.40000
3681
.40500
3682
.41000
3683
.41500
3684
.42000
3685
.42500
3686
.43000
3687
.43500
3688
.44000
3689
.44500
3690
.45000
3691
.45500
3692
.46000
3693
.46500
3694
.47000
3695
.47500
3696
.48000
3697
.48500
3698
.49000
3699
.49500
3700 146.50000
3701
.50500
3702
.51000
3703
.51500
3704
.52000
3705
.52500
3706
.53000
3707
.53500
3708
.54000
3709
.54500
3710
.55000
3711
.55500
3712
.56000
3713
.56500
3714
.57000
3715
.57500
3716
.58000
3717
.58500
3718
.59000
3719
.59500
3720
.60000
3721
.60500
3722
.61000
3723
.61500
3724
.62000
Chan.
Num.
Freq.
(MHz)
3725 146.62500
3726
.63000
3727
.63500
3728
.64000
3729
.64500
3730
.65000
3731
.65500
3732
.66000
3733
.66500
3734
.67000
3735
.67500
3736
.68000
3737
.68500
3738
.69000
3739
.69500
3740
.70000
3741
.70500
3742
.71000
3743
.71500
3744
.72000
3745
.72500
3746
.73000
3747
.73500
3748
.74000
3749
.74500
3750 146.75000
3751
.75500
3752
.76000
3753
.76500
3754
.77000
3755
.77500
3756
.78000
3757
.78500
3758
.79000
3759
.79500
3760
.80000
3761
.80500
3762
.81000
3763
.81500
3764
.82000
3765
.82500
3766
.83000
3767
.83500
3768
.84000
3769
.84500
3770
.85000
3771
.85500
3772
.86000
3773
.86500
3774
.87000
3775
.87500
3776
.88000
3777
.88500
3778
.89000
3779
.89500
3780
.90000
3781
.90500
3782
.91000
3783
.91500
3784
.92000
3785
.92500
3786
.93000
3787
.93500
3788
.94000
3789
.94500
3790
.95000
3791
.95500
3792
.96000
3793
.96500
3794
.97000
3795
.97500
3796
.98000
3797
.98500
3798
.99000
3799
.99500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
3800 147.00000
3801
.00500
3802
.01000
3803
.01500
3804
.02000
3805
.02500
3806
.03000
3807
.03500
3808
.04000
3809
.04500
3810
.05000
3811
.05500
3812
.06000
3813
.06500
3814
.07000
3815
.07500
3816
.08000
3817
.08500
3818
.09000
3819
.09500
3820
.10000
3821
.10500
3822
.11000
3823
.11500
3824
.12000
3825
.12500
3826
.13000
3827
.13500
3828
.14000
3829
.14500
3830
.15000
3831
.15500
3832
.16000
3833
.16500
3834
.17000
3835
.17500
3836
.18000
3837
.18500
3838
.19000
3839
.19500
3840
.20000
3841
.20500
3842
.21000
3843
.21500
3844
.22000
3845
.22500
3846
.23000
3847
.23500
3848
.24000
3849
.24500
3850 147.25000
3851
.25500
3852
.26000
3853
.26500
3854
.27000
3855
.27500
3856
.28000
3857
.28500
3858
.29000
3859
.29500
3860
.30000
3861
.30500
3862
.31000
3863
.31500
3864
.32000
3865
.32500
3866
.33000
3867
.33500
3868
.34000
3869
.34500
3870
.35000
3871
.35500
3872
.36000
3873
.36500
3874
.37000
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
147.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
147.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/140 Channel Designation Table: 132 to 150 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
3950 147.75000
3951
.75500
3952
.76000
3953
.76500
3954
.77000
3955
.77500
3956
.78000
3957
.78500
3958
.79000
3959
.79500
3960
.80000
3961
.80500
3962
.81000
3963
.81500
3964
.82000
3965
.82500
3966
.83000
3967
.83500
3968
.84000
3969
.84500
3970
.85000
3971
.85500
3972
.86000
3973
.86500
3974
.87000
3975
.87500
3976
.88000
3977
.88500
3978
.89000
3979
.89500
3980
.90000
3981
.90500
3982
.91000
3983
.91500
3984
.92000
3985
.92500
3986
.93000
3987
.93500
3988
.94000
3989
.94500
3990
.95000
3991
.95500
3992
.96000
3993
.96500
3994
.97000
3995
.97500
3996
.98000
3997
.98500
3998
.99000
3999
.99500
4000 148.00000
4001
.00500
4002
.01000
4003
.01500
4004
.02000
4005
.02500
4006
.03000
4007
.03500
4008
.04000
4009
.04500
4010
.05000
4011
.05500
4012
.06000
4013
.06500
4014
.07000
4015
.07500
4016
.08000
4017
.08500
4018
.09000
4019
.09500
4020
.10000
4021
.10500
4022
.11000
4023
.11500
4024
.12000
Chan.
Num.
Freq.
(MHz)
4025 148.12500
4026
.13000
4027
.13500
4028
.14000
4029
.14500
4030
.15000
4031
.15500
4032
.16000
4033
.16500
4034
.17000
4035
.17500
4036
.18000
4037
.18500
4038
.19000
4039
.19500
4040
.20000
4041
.20500
4042
.21000
4043
.21500
4044
.22000
4045
.22500
4046
.23000
4047
.23500
4048
.24000
4049
.24500
4050 148.25000
4051
.25500
4052
.26000
4053
.26500
4054
.27000
4055
.27500
4056
.28000
4057
.28500
4058
.29000
4059
.29500
4060
.30000
4061
.30500
4062
.31000
4063
.31500
4064
.32000
4065
.32500
4066
.33000
4067
.33500
4068
.34000
4069
.34500
4070
.35000
4071
.35500
4072
.36000
4073
.36500
4074
.37000
4075
.37500
4076
.38000
4077
.38500
4078
.39000
4079
.39500
4080
.40000
4081
.40500
4082
.41000
4083
.41500
4084
.42000
4085
.42500
4086
.43000
4087
.43500
4088
.44000
4089
.44500
4090
.45000
4091
.45500
4092
.46000
4093
.46500
4094
.47000
4095
.47500
4096
.48000
4097
.48500
4098
.49000
4099
.49500
Chan.
Num.
Freq.
(MHz)
4100 148.50000
4101
.50500
4102
.51000
4103
.51500
4104
.52000
4105
.52500
4106
.53000
4107
.53500
4108
.54000
4109
.54500
4110
.55000
4111
.55500
4112
.56000
4113
.56500
4114
.57000
4115
.57500
4116
.58000
4117
.58500
4118
.59000
4119
.59500
4120
.60000
4121
.60500
4122
.61000
4123
.61500
4124
.62000
4125
.62500
4126
.63000
4127
.63500
4128
.64000
4129
.64500
4130
.65000
4131
.65500
4132
.66000
4133
.66500
4134
.67000
4135
.67500
4136
.68000
4137
.68500
4138
.69000
4139
.69500
4140
.70000
4141
.70500
4142
.71000
4143
.71500
4144
.72000
4145
.72500
4146
.73000
4147
.73500
4148
.74000
4149
.74500
4150 148.75000
4151
.75500
4152
.76000
4153
.76500
4154
.77000
4155
.77500
4156
.78000
4157
.78500
4158
.79000
4159
.79500
4160
.80000
4161
.80500
4162
.81000
4163
.81500
4164
.82000
4165
.82500
4166
.83000
4167
.83500
4168
.84000
4169
.84500
4170
.85000
4171
.85500
4172
.86000
4173
.86500
4174
.87000
Chan.
Num.
Freq.
(MHz)
4175 148.87500
4176
.88000
4177
.88500
4178
.89000
4179
.89500
4180
.90000
4181
.90500
4182
.91000
4183
.91500
4184
.92000
4185
.92500
4186
.93000
4187
.93500
4188
.94000
4189
.94500
41 90
.95000
4191
.95500
4192
.96000
4193
.96500
4194
.97000
4195
.97500
4196
.98000
4197
.98500
4198
.99000
4199
.99500
4200 149.00000
4201
.00500
4202
.01000
4203
.01500
4204
.02000
4205
.02500
4206
.03000
4207
.03500
4208
.04000
4209
.04500
4210
.05000
4211
.05500
4212
.06000
4213
.06500
4214
.07000
4215
.07500
4216
.08000
4217
.08500
4218
.09000
4219
.09500
4220
.10000
4221
.10500
4222
.11000
4223
.11500
4224
.12000
4225
.12500
4226
.13000
4227
.13500
4228
.14000
4229
.14500
4230
.15000
4231
.15500
4232
.16000
4233
.16500
4234
.17000
4235
.17500
4236
.18000
4237
.18500
4238
.19000
4239
.19500
4240
.20000
4241
.20500
4242
.21000
4243
.21500
4244
.22000
4245
.22500
4246
.23000
4247
.23500
4248
.24000
4249
.24500
Chan.
Num.
Freq.
(MHz)
4250 149.25000
4251
.25500
4252
.26000
4253
.26500
4254
.27000
4255
.27500
4256
.28000
4257
.28500
4258
.29000
4259
.29500
4260
.30000
4261
.30500
4262
.31000
4263
.31500
4264
.32000
4265
.32500
4266
.33000
4267
.33500
4268
.34000
4269
.34500
4270
.35000
4271
.35500
4272
.36000
4273
.36500
4274
.37000
4275
.37500
4276
.38000
4277
.38500
4278
.39000
4279
.39500
4280
.40000
4281
.40500
4282
.41000
4283
.41500
4284
.42000
4285
.42500
4286
.43000
4287
.43500
4288
.44000
4289
.44500
4290
.45000
4291
.45500
4292
.46000
4293
.46500
4294
.47000
4295
.47500
4296
.48000
4297
.48500
4298
.49000
4299
.49500
4300 149.50000
4301
.50500
4302
.51000
4303
.51500
4304
.52000
4305
.52500
4306
.53000
4307
.53500
4308
.54000
4309
.54500
4310
.55000
4311
.55500
4312
.56000
4313
.56500
4314
.57000
4315
.57500
4316
.58000
4317
.58500
4318
.59000
4319
.59500
4320
.60000
4321
.60500
4322
.61000
4323
.61500
4324
.62000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
4325 149.62500
4326
.63000
4327
.63500
4328
.64000
43 29
.64500
4330
.65000
4331
.65500
4332
.66000
4333
.66500
4334
.67000
4335
.67500
4336
.68000
4337
.68500
4338
.69000
4339
.69500
4340
.70000
4341
.70500
4342
.71000
4343
.71500
4344
.72000
4345
.72500
4346
.73000
4347
.73500
4348
.74000
4349
.74500
4350 149.75000
4351
.75500
4352
.76000
4353
.76500
4354
.77000
4355
.77500
4356
.78000
4357
.78500
4358
.79000
4359
.79500
4360
.80000
4361
.80500
4362
.81000
4363
.81500
4364
.82000
4365
.82500
4366
.83000
4367
.83500
4368
.84000
4369
.84500
4370
.85000
4371
.85500
4372
.86000
4373
.86500
4374
.87000
4375
.87500
4376
.88000
4377
.88500
4378
.89000
4379
.89500
4380
.90000
4381
.90500
4382
.91000
4383
.91500
4384
.92000
4385
.92500
4386
.93000
4387
.93500
4388
.94000
4389
.94500
4390
.95000
4391
.95500
4392
.96000
4393
.96500
4394
.97000
4395
.97500
4396
.98000
4397
.98500
4398
.99000
4399
.99500
4400
150.00000
1-7
This page intentionally left blank.
1-8
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
2
Chan.
Num.
VT-3/140 Channel Designation Table: 132-150MHz, 6.25kHz Increments
Freq.
(MHz)
5640 132.00000
5641
.00625
5642
.01250
5643
.01875
5644
.02500
5645
.03125
5646
.03750
5647
.04375
5648
.05000
5649
.05625
5650
.06250
5651
.06875
5652
.07500
5653
.08125
5654
.08750
5655
.09375
5656
.10000
5657
.10625
5658
.11250
5659
.11875
5660
.12500
5661
.13125
5662
.13750
5663
.14375
5664
.15000
5665
.15625
5666
.16250
5667
.16875
5668
.17500
5669
.18125
5670
.18750
5671
.19375
5672
.20000
5673
.20625
5674
.21250
5675
.21875
5676
.22500
5677
.23125
5678
.23750
5679
.24375
5680 132.25000
5681
.25625
5682
.26250
5683
.26875
5684
.27500
5685
.28125
5686
.28750
5687
.29375
5688
.30000
5689
.30625
5690
.31250
5691
.31875
5692
.32500
5693
.33125
5694
.33750
5695
.34375
5696
.35000
5697
.35625
5698
.36250
5699
.36875
5700
.37500
5701
.38125
5702
.38750
5703
.39375
5704
.40000
5705
.40625
5706
.41250
5707
.41875
5708
.42500
5709
.43125
5710
.43750
5711
.44375
5712
.45000
5713
.45625
5714
.46250
Chan.
Num.
Freq.
(MHz)
5715 132.46875
5716
.47500
5717
.48125
5718
.48750
5719
.49375
5720 132.50000
5721
.50625
5722
.51250
5723
.51875
5724
.52500
5725
.53125
5726
.53750
5727
.54375
5728
.55000
5729
.55625
5730
.56250
5731
.56875
5732
.57500
5733
.58125
5734
.58750
5735
.59375
5736
.60000
5737
.60625
5738
.61250
5739
.61875
5740
.62500
5741
.63125
5742
.63750
5743
.64375
5744
.65000
5745
.65625
5746
.66250
5747
.66875
5748
.67500
5749
.68125
5750
.68750
5751
.69375
5752
.70000
5753
.70625
5754
.71250
5755
.71875
5756
.72500
5757
.73125
5758
.73750
5759
.74375
5760 132.75000
5761
.75625
5762
.76250
5763
.76875
5764
.77500
5765
.78125
5766
.78750
5767
.79375
5768
.80000
5769
.80625
5770
.81250
5771
.81875
5772
.82500
5773
.83125
5774
.83750
5775
.84375
5776
.85000
5777
.85625
5778
.86250
5779
.86875
5780
.87500
5781
.88125
5782
.88750
5783
.89375
5784
.90000
5785
.90625
5786
.91250
5787
.91875
5788
.92500
5789
.93125
Chan.
Num.
Freq.
(MHz)
5790 13 2.93750
5791
.94375
5792
.95000
5793
.95625
5794
.96250
5795
.96875
5796
.97500
5797
.98125
5798
.98750
5799
.99375
5800 133.00000
5801
.00625
58 02
.01250
5803
.01875
5804
.02500
5805
.03125
5806
.03750
5807
.04375
5808
.0 5000
5809
.05625
5810
.06250
5811
.06875
5812
.07500
5813
.08125
5814
.08750
5815
.09375
5816
.10000
5817
.10625
5818
.11250
5819
.11875
5820
.12500
5821
.13125
5822
.13750
5823
.14375
5824
.15000
5825
.15625
5826
.16250
5827
.16875
5828
.17500
5829
.18125
5830
.18750
5831
.19375
5832
.20000
5833
.20625
5834
.21250
5835
.21875
5836
.22500
5837
.23125
5838
.23750
5839
.24375
5840 133.25000
5841
.25625
5842
.26250
5843
.26875
5844
.27500
5845
.28125
5846
.28750
5847
.29375
5848
.30000
5849
.30625
5850
.31250
5851
.31875
5852
.32500
5853
.33125
5854
.33750
5855
.34375
5856
.35000
5857
.35625
5858
.36250
5859
.36875
5860
.37500
5861
.38125
5862
.38750
5863
.39375
5864
.40000
Chan.
Num.
Freq.
(MHz)
5865 133.40625
5866
.41250
5867
.41875
5868
.42500
5869
.43125
5870
.43750
5871
.44375
5872
.45000
5873
.45625
5874
.46250
5875
.46875
5876
.47500
5877
.48125
5878
.48750
5879
.49375
5880 133.50000
5881
.50625
5882
.51250
5883
.51875
5884
.52500
5885
.53125
5886
.53750
5887
.54375
5888
.55000
5889
.55625
5890
.56250
5891
.56875
5892
.57500
5893
.58125
5894
.58750
5895
.59375
5896
.60000
5897
.60625
5898
.61250
5899
.61875
5900
.62500
5901
.63125
5902
.63750
5903
.64375
5904
.65000
5905
.65625
5906
.66250
5907
.66875
5908
.67500
5909
.68125
5910
.68750
5911
.69375
5912
.70000
5913
.70625
5914
.71250
5915
.71875
5916
.72500
5917
.73125
5918
.73750
5919
.74375
5920 133.75000
5921
.75625
5922
.76250
5923
.76875
5924
.77500
5925
.78125
5926
.78750
5927
.79375
5928
.80000
5929
.80625
5930
.81250
5931
.81875
5932
.82500
5933
.83125
5934
.83750
5935
.84375
5936
.85000
5937
.85625
5938
.86250
5939
.86875
Chan.
Num.
Freq.
(MHz)
5940 133.87500
5941
.88125
5942
.88750
5943
.89375
5944
.90000
5945
.90625
5946
.91250
5947
.91875
5948
.92500
5949
.93125
5950
.93750
5951
.94375
5952
.95000
5953
.95625
5954
.96250
5955
.96875
5956
.97500
5957
.98125
5958
.98750
5959
.99375
5960 134.00000
5961
.00625
5962
.01250
5963
.01875
5964
.02500
5965
.03125
5966
.03750
5967
.04375
5968
.05000
5969
.05625
5970
.06250
5971
.06875
5972
.07500
5973
.08125
5974
.08750
5975
.09375
5976
.10000
5977
.10625
5978
.11250
59 79
.11875
5980
.12500
5981
.13125
5982
.13750
5983
.14375
5984
.15000
5985
.15625
5986
.16250
5987
.16875
5988
.17500
5989
.18125
5990
.18750
5991
.19375
5992
.20000
5993
.20625
5994
.21250
5995
.21875
5996
.22500
5997
.23125
5998
.23750
5999
.24375
6000 134.25000
6001
.25625
6002
.26250
6003
.26875
6004
.27500
6005
.28125
6006
.28750
6007
.29375
6008
.30000
6009
.30625
6010
.31250
6011
.31875
6012
.32500
6013
.33125
6014
.33750
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
6015 134.34375
6016
.35000
6017
.35625
6018
.36250
6019
.36875
6020
.37500
6021
.38125
6022
.38750
6023
.39375
6024
.40000
6025
.40625
6026
.41250
6027
.41875
6028
.42500
6029
.43125
6030
.43750
6031
.44375
6032
.45000
6033
.45625
6034
.46250
6035
.46875
6036
.47500
6037
.48125
6038
.48750
6039
.49375
6040 134.50000
6041
.50625
6042
.51250
6043
.51875
6044
.52500
6045
.53125
6046
.53750
6047
.54375
6048
.55000
6049
.55625
6050
.56250
6051
.56875
6052
.57500
6053
.58125
6054
.58750
6055
.59375
6056
.60000
6057
.60625
6058
.61250
6059
.61875
6060
.62500
6061
.63125
6062
.63750
6063
.64375
6064
.65000
6065
.65625
6066
.66250
6067
.66875
6068
.67500
6069
.68125
6070
.68750
6071
.69375
60 72
.70000
6073
.70625
6074
.71250
6075
.71875
6076
.72500
6077
.73125
6078
.7 3750
6079
.74375
6080 134.75000
6081
.75625
6082
.76250
6083
.76875
6084
.77500
6085
.78125
6086
.78750
6087
.79375
6088
.80000
6089
.80625
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
134.81250
.81875
.82500
.83125
.83750
.84375
.85000
.85625
.86250
.86875
.87500
.88125
.88750
.89375
.90000
.90625
.91250
.91875
.92500
.93125
.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
135.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
135.25000
.25625
.26250
.26875
.27500
2-1
VT-3/140 Channel Designation Table: 132 to 150 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
6165 135.28125
6166
.28750
6167
.29375
6168
.30000
6169
.30625
6170
.31250
6171
.31875
6172
.32500
6173
.33125
6174
.33750
6175
.34375
6176
.35000
6177
.35625
6178
.36250
6179
.36875
6180
.37500
6181
.38125
6182
.38750
6183
.39375
6184
.40000
6185
.40625
6186
.41250
6187
.41875
6188
.42500
6189
.43125
6190
.43750
6191
.44375
6192
.45000
6193
.45625
6194
.46250
6195
.46875
6196
.47500
6197
.48125
6198
.48750
6199
.49375
6200 135.50000
6201
.50625
6202
.5 1250
6203
.51875
6204
.52500
6205
.53125
6206
.53750
6207
.54375
6208
.55000
6209
.55625
6210
.56250
6211
.56875
6212
.57500
6213
.58125
6214
.58750
6215
.59375
6216
.60000
6217
.60625
6218
.61250
6219
.61875
6220
.62500
6221
.63125
6222
.63750
6223
.64375
6224
.65000
6225
.65625
6226
.66250
6227
.66875
6228
.67500
6229
.68125
6230
.68750
6231
.69375
6232
.70000
6233
.70625
6234
.71250
6235
.71875
6236
.72500
6237
.73125
6238
.73750
6239
.74375
2-2
Chan.
Num.
Freq.
(MHz)
6240 135.75000
6241
.75625
6242
.76250
6243
.76875
6244
.77500
6245
.78125
6246
.78750
6247
.79375
6248
.80000
6249
.80625
6250
.81250
6251
.81875
6252
.82500
6253
.83125
6254
.83750
6255
.84375
6256
.85000
6257
.85625
6258
.86250
6259
.86875
6260
.87500
6261
.88125
6262
.88750
6263
.89375
6264
.90000
6265
.90625
6266
.91250
6267
.91875
6268
.92500
6269
.93125
6270
.93750
6271
.94375
6272
.95000
6273
.95625
6274
.96250
6275
.96875
6276
.97500
6277
.98125
6278
.98750
6279
.99375
6280 136.00000
6281
.00625
6282
.01250
6283
.01875
6284
.02500
6285
.03125
6286
.03750
6287
.04375
6288
.05000
6289
.05625
6290
.06250
6291
.06875
6292
.07500
6293
.08125
6294
.08750
6295
.09375
6296
.10000
6297
.10625
6298
.11250
6299
.11875
6300
.12500
6301
.13125
6302
.13750
6303
.14375
6304
.15000
6305
.15625
6306
.16250
6307
.16875
6308
.17500
6309
.18125
6310
.18750
6311
.19375
6312
.20000
6313
.20625
6314
.21250
Chan.
Num.
Freq.
(MHz)
6315 136.21875
6316
.22500
6317
.23125
6318
.23750
6319
.24375
6320 136.25000
6321
.25625
6322
.26250
6323
.26875
6324
.27500
6325
.28125
6326
.28750
6327
.29375
6328
.30000
6329
.30625
6330
.31250
6331
.31875
6332
.32500
6333
.33125
6334
.33750
6335
.34375
6336
.35000
6337
.35625
6338
.36250
6339
.36875
6340
.37500
6341
.38125
6342
.38750
6343
.39375
6344
.40000
6345
.40625
6346
.41250
6347
.41875
6348
.42500
6349
.43125
6350
.43750
6351
.44375
6352
.45000
6353
.45625
6354
.46250
6355
.46875
6356
.47500
6357
.48125
6358
.48750
6359
.49375
6360 136.50000
6361
.50625
6362
.51250
6363
.51875
6364
.52500
6365
.53125
6366
.53750
6367
.54375
6368
.55000
6369
.55625
6370
.56250
6371
.56875
6372
.57500
6373
.58125
6374
.58750
6375
.59375
6376
.60000
6377
.60625
6378
.61250
6379
.61875
6380
.62500
6381
.63125
6382
.63750
6383
.64375
6384
.65000
6385
.65625
6386
.66250
6387
.66875
6388
.67500
6389
.68125
Chan.
Num.
Freq.
(MHz)
6390 136.68750
6391
.69375
6392
.70000
6393
.70625
6394
.71250
6395
.71875
6396
.72500
6397
.73125
6398
.73750
6399
.74375
6400 136.75000
6401
.75625
6402
.76250
6403
.76875
6404
.77500
6405
.78125
6406
.78750
6407
.79375
6408
.80000
6409
.80625
6410
.81250
6411
.81875
6412
.82500
6413
.83125
6414
.83750
6415
.84375
6416
.85000
6417
.85625
6418
.86250
6419
.86875
6420
.87500
6421
.88125
6422
.88750
6423
.89375
6424
.90000
6425
.90625
6426
.91250
6427
.91875
6428
.92500
6429
.93125
6430
.93750
6431
.94375
6432
.95000
6433
.95625
6434
.96250
6435
.96875
6436
.97500
6437
.98125
6438
.98750
6439
.99375
6440 137.00000
6441
.00625
6442
.01250
6443
.01875
6444
.02500
6445
.03125
6446
.03750
6447
.04375
6448
.05000
6449
.05625
6450
.06250
6451
.06875
6452
.07500
6453
.08125
6454
.08750
6455
.09375
6456
.10000
6457
.10625
6458
.11250
6459
.11875
6460
.12500
6461
.13125
6462
.13750
6463
.14375
6464
.15000
Chan.
Num.
Freq.
(MHz)
6465 137.15625
6466
.16250
6467
.16875
6468
.17500
6469
.18125
6470
.18750
6471
.19375
6472
.20000
6473
.20625
6474
.21250
6475
.21875
6476
.22500
6477
.23125
6478
.23750
6479
.24375
6480 137.25000
6481
.25625
6482
.26250
6483
.26875
6484
.27500
6485
.28125
6486
.28750
6487
.29375
6488
.30000
6489
.30625
6490
.31250
6491
.31875
6492
.32500
6493
.33125
6494
.33750
6495
.34375
6496
.35000
6497
.35625
6498
.36250
6499
.36875
6500
.37500
6501
.38125
6502
.38750
6503
.39375
6504
.40000
6505
.40625
6506
.41250
6507
.41875
6508
.42500
6509
.43125
6510
.43750
6511
.44375
6512
.45000
6513
.45625
6514
.46250
6515
.46875
6516
.47500
6517
.48125
6518
.48750
6519
.49375
6520 137.50000
6521
.50625
6522
.51250
6523
.51875
6524
.52500
6525
.53125
6526
.53750
6527
.54375
6528
.55000
6529
.55625
6530
.56250
6531
.56875
6532
.57500
6533
.58125
6534
.58750
6535
.59375
6536
.60000
6537
.60625
6538
.61250
6539
.61875
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
6540 13 7.62500
6541
.63125
6542
.63750
6543
.64375
6544
.65000
6545
.65625
6546
.66250
6547
.66875
6548
.67500
6549
.68125
6550
.68750
6551
.69375
6552
.70000
6553
.70625
6554
.71250
6555
.71875
6556
.72500
6557
.73125
6558
.73750
6559
.74375
6560 137.75000
6561
.75625
6562
.76250
6563
.76875
6564
.77500
6565
.78125
6566
.78750
6567
.79375
6568
.80000
6569
.80625
6570
.81250
6571
.81875
6572
.82500
6573
.83125
6574
.83750
6575
.84375
6576
.85000
6577
.85625
6578
.86250
6579
.86875
6580
.87500
6581
.88125
6582
.88750
6583
.89375
6584
.90000
6585
.90625
6586
.91250
6587
.91875
6588
.92500
6589
.93125
6590
.93750
6591
.94375
6592
.95000
6593
.95625
6594
.96250
6595
.96875
6596
.97500
6597
.98125
6598
.98750
6599
.99375
6600 138.00000
6601
.00625
6602
.01250
6603
.01875
6604
.02500
6605
.03125
6606
.03750
6607
.04375
6608
.05000
6609
.05625
6610
.06250
6611
.06875
6612
.07500
6613
.08125
6614
.08750
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
138.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
138.25000
.25625
.26250
.26875
.27500
.28125
.28750
.29375
.30000
.30625
.31250
.31875
.32500
.33125
.33750
.34375
.35000
.35625
.36250
.36875
.37500
.38125
.38750
.39375
.40000
.40625
.41250
.41875
.42500
.43125
.43750
.44375
.45000
.45625
.46250
.46875
.47500
.48125
.48750
.49375
138.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/140 Channel Designation Table: 132 to 150 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
6690 138.56250
6691
.56875
6692
.57500
6693
.58125
6694
.58750
6695
.59375
6696
.60000
6697
.60625
6698
.61250
6699
.61875
6700
.62500
6701
.63125
6702
.63750
6703
.64375
6704
.65000
6705
.65625
6706
.66250
6707
.66875
6708
.67500
6709
.68125
6710
.68750
6711
.69375
6712
.70000
6713
.70625
6714
.71250
6715
.71875
6716
.72500
6717
.73125
6718
.73750
6719
.74375
6720 138.75000
6721
.75625
6722
.76250
6723
.76875
6724
.77500
6725
.78125
6726
.78750
6727
.79375
6728
.80000
6729
.80625
6730
.81250
6731
.81875
6732
.82500
6733
.83125
6734
.83750
6735
.84375
6736
.85000
6737
.85625
6738
.86250
6739
.86875
6740
.87500
6741
.88125
6742
.88750
6743
.89375
6744
.90000
6745
.90625
6746
.91250
6747
.91875
6748
.92500
6749
.93125
6750
.93750
6751
.94375
6752
.95000
6753
.95625
6754
.96250
6755
.96875
6756
.97500
6757
.98125
6758
.98750
6759
.99375
6760 139.00000
6761
.00625
6762
.01250
6763
.01875
6764
.02500
Chan.
Num.
Freq.
(MHz)
6765 139.03125
6766
.03750
6767
.04375
6768
.05000
6769
.05625
6770
.06250
6771
.06875
6772
.07500
6773
.08125
6774
.08750
6775
.09375
6776
.10000
6777
.10625
6778
.11250
6779
.11875
6780
.12500
6781
.13125
6782
.13750
6783
.14375
6784
.15000
6785
.15625
6786
.16250
6787
.16875
6788
.17500
6789
.18125
6790
.18750
6791
.19375
6792
.20000
6793
.20625
6794
.21250
6795
.21875
6796
.22500
6797
.23125
6798
.23750
6799
.24375
6800 139.25000
6801
.25625
6802
.26250
6803
.26875
6804
.27500
6805
.28125
6806
.28750
6807
.29375
6808
.30000
6809
.30625
6810
.31250
6811
.31875
6812
.32500
6813
.33125
6814
.33750
6815
.34375
6816
.35000
6817
.35625
6818
.36250
6819
.36875
6820
.37500
6821
.38125
6822
.38750
6823
.39375
6824
.40000
6825
.40625
6826
.41250
6827
.41875
6828
.42500
6829
.43125
6830
.43750
6831
.44375
6832
.45000
6833
.45625
6834
.46250
6835
.46875
6836
.47500
6837
.48125
6838
.48750
6839
.49375
Chan.
Num.
Freq.
(MHz)
6840 139.50000
6841
.50625
6842
.51250
6843
.51875
6844
.52500
6845
.53125
6846
.53750
6847
.54375
6848
.55000
6849
.55625
6850
.56250
6851
.56875
6852
.57500
6853
.58125
6854
.58750
6855
.59375
6856
.60000
6857
.60625
6858
.61250
6859
.61875
6860
.62500
6861
.63125
6862
.63750
6863
.64375
6864
.65000
6865
.65625
6866
.66250
6867
.66875
6868
.67500
6869
.68125
6870
.68750
6871
.69375
6872
.70000
6873
.70625
6874
.71250
6875
.71875
6876
.72500
6877
.73125
6878
.73750
6879
.74375
6880 139.75000
6881
.75625
6882
.76250
6883
.76875
6884
.77500
6885
.78125
6886
.78750
6887
.79375
6888
.80000
6889
.80625
6890
.81250
6891
.81875
6892
.82500
6893
.83125
6894
.83750
6895
.84375
6896
.85000
6897
.85625
6898
.86250
6899
.86875
6900
.87500
6901
.88125
6902
.88750
6903
.89375
6904
.90000
6905
.90625
6906
.91250
6907
.91875
6908
.92500
6909
.93125
6910
.93750
6911
.94375
6912
.95000
6913
.95625
6914
.96250
Chan.
Num.
Freq.
(MHz)
6915 139.96875
6916
.97500
6917
.98125
6918
.98750
6919
.99375
6920 140.00000
6921
.00625
6922
.01250
6923
.01875
6924
.02500
6925
.03125
6926
.03750
6927
.04375
6928
.05000
6929
.05625
6930
.06250
6931
.06875
6932
.07500
6933
.08125
6934
.08750
6935
.09375
6936
.10000
6937
.10625
6938
.11250
6939
.11875
6940
.12500
6941
.13125
6942
.13750
6943
.14375
6944
.15000
6945
.15625
6946
.16250
6947
.16875
6948
.17500
6949
.18125
6950
.18750
6951
.19375
6952
.20000
6953
.20625
6954
.21250
6955
.21875
6956
.22500
6957
.23125
6958
.23750
6959
.24375
6960 140.25000
6961
.25625
6962
.26250
6963
.26875
6964
.27500
6965
.28125
6966
.28750
6967
.29375
6968
.30000
6969
.30625
6970
.31250
6971
.31875
6972
.32500
6973
.33125
6974
.33750
6975
.34375
6976
.35000
6977
.35625
6978
.36250
6979
.36875
6980
.37500
6981
.38125
6982
.38750
6983
.39375
6984
.40000
6985
.40625
6986
.41250
6987
.41875
6988
.42500
6989
.43125
Chan.
Num.
Freq.
(MHz)
6990 140.43750
6991
.44375
6992
.45000
6993
.45625
6994
.46250
6995
.46875
6996
.47500
6997
.48125
6998
.48750
6999
.49375
7000 140.50000
7001
.50625
7002
.51250
7003
.51875
7004
.52500
7005
.53125
7006
.53750
7007
.54375
7008
.55000
7009
.55625
7010
.56250
7011
.56875
7012
.57500
7013
.58125
7014
.58750
7015
.59375
7016
.60000
7017
.60625
7018
.61250
7019
.61875
7020
.62500
70 21
.63125
7022
.63750
7023
.64375
7024
.65000
7025
.65625
7026
.66250
7027
.6 6875
7028
.67500
7029
.68125
7030
.68750
7031
.69375
7032
.70000
7033
.70625
7034
.71250
7035
.71875
7036
.72500
7037
.73125
7038
.73750
7039
.74375
7040 140.75000
7041
.75625
7042
.76250
7043
.76875
7044
.77500
7045
.78125
7046
.78750
7047
.79375
7048
.80000
7049
.80625
7050
.81250
7051
.81875
7052
.82500
7053
.83125
7054
.83750
7055
.84375
7056
.85000
7057
.85625
7058
.86250
7059
.86875
7060
.87500
7061
.88125
7062
.88750
7063
.89375
7064
.90000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
7065 140.90625
7066
.91250
7067
.91875
7068
.92500
7069
.93125
7070
.93750
7071
.94375
7072
.95000
7073
.95625
7074
.96250
7075
.96875
7076
.97500
7077
.98125
7078
.98750
7079
.99375
7080 141.00000
7081
.00625
7082
.01250
7083
.01875
7084
.02500
7085
.03125
7086
.03750
7087
.04375
7088
.05000
7089
.05625
7090
.06250
7091
.06875
7092
.07500
7093
.08125
7094
.08750
7095
.09375
7096
.10000
7097
.10625
7098
.11250
7099
.11875
7100
.12500
7101
.13125
7102
.13750
7103
.14375
7104
.15000
7105
.15625
7106
.16250
7107
.16875
7108
.17500
7109
.18125
7110
.18750
7111
.19375
7112
.20000
7113
.20625
7114
.21250
7115
.21875
7116
.22500
7117
.23125
7118
.23750
7119
.24375
7120 141.25000
7121
.25625
7122
.26250
7123
.26875
7124
.27500
7125
.28125
7126
.28750
7127
.29375
7128
.30000
7129
.30625
7130
.31250
7131
.31875
7132
.32500
7133
.33125
7134
.33750
7135
.34375
7136
.35000
7137
.35625
7138
.36250
7139
.36875
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
141.37500
.38125
.38750
.39375
.40000
.40625
.41250
.41875
.42500
.43125
.43750
.44375
.45000
.45625
.46250
.46875
.47500
.48125
.48750
.49375
141.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
.56250
.56875
.57500
.58125
.58750
.59375
.60000
.60625
.61250
.61875
.62500
.63125
.63750
.64375
.65000
.65625
.66250
.66875
.67500
.68125
.68750
.69375
.70000
.70625
.71250
.71875
.72500
.73125
.73750
.74375
141.75000
.75625
.76250
.76875
.77500
.78125
.78750
.79375
.80000
.80625
.81250
.81875
.82500
.83125
.83750
2-3
VT-3/140 Channel Designation Table: 132 to 150 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
7215 141.84375
7216
.85000
7217
.85625
7218
.86250
7219
.86875
7220
.87500
7221
.88125
7222
.88750
7223
.89375
7224
.90000
7225
.90625
7226
.91250
7227
.91875
7228
.92500
7229
.93125
7230
.93750
7231
.94375
7232
.95000
7233
.95625
7234
.96250
7235
.96875
7236
.97500
7237
.98125
7238
.98750
7239
.99375
7240 142.00000
7241
.00625
7242
.01250
7243
.01875
7244
.02500
7245
.03125
7246
.03750
7247
.04375
7248
.05000
7249
.05625
7250
.06250
7251
.06875
7252
.07500
7253
.08125
7254
.08750
7255
.09375
7256
.10000
7257
.10625
7258
.11250
7259
.11875
7260
.12500
7261
.13125
7262
.13750
7263
.14375
7264
.15000
7265
.15625
7266
.16250
7267
.16875
7268
.17500
7269
.18125
7270
.18750
7271
.19375
7272
.20000
7273
.20625
7274
.21250
7275
.21875
7276
.22500
7277
.23125
7278
.23750
7279
.24375
7280 142.25000
7281
.25625
7282
.26250
7283
.26875
7284
.27500
7285
.28125
7286
.28750
7287
.29375
7288
.30000
7289
.30625
2-4
Chan.
Num.
Freq.
(MHz)
7290 142.31250
7291
.31875
7292
.32500
7293
.33125
7294
.33750
7295
.34375
7296
.35000
7297
.35625
7298
.36250
7299
.36875
7300
.37500
7301
.38125
7302
.38750
7303
.39375
7304
.40000
7305
.40625
7306
.41250
7307
.41875
7308
.42500
7309
.43125
7310
.43750
7311
.44375
7312
.45000
7313
.45625
7314
.46250
7315
.46875
7316
.47500
7317
.48125
7318
.48750
7319
.49375
7320 142.50000
7321
.50625
73 22
.51250
7323
.51875
7324
.52500
7325
.53125
7326
.53750
7327
.54375
7328
.5 5000
7329
.55625
7330
.56250
7331
.56875
7332
.57500
7333
.58125
7334
.58750
7335
.59375
7336
.60000
7337
.60625
7338
.61250
7339
.61875
7340
.62500
7341
.63125
7342
.63750
7343
.64375
7344
.65000
7345
.65625
7346
.66250
7347
.66875
7348
.67500
7349
.68125
7350
.68750
7351
.69375
7352
.70000
7353
.70625
7354
.71250
7355
.71875
7356
.72500
7357
.73125
7358
.73750
7359
.74375
7360 142.75000
7361
.75625
7362
.76250
7363
.76875
7364
.77500
Chan.
Num.
Freq.
(MHz)
7365 142.78125
7366
.78750
7367
.79375
7368
.80000
7369
.80625
7370
.81250
7371
.81875
7372
.82500
7373
.83125
7374
.83750
7375
.84375
7376
.85000
7377
.85625
7378
.86250
7379
.86875
7380
.87500
7381
.88125
7382
.88750
7383
.89375
7384
.90000
7385
.90625
7386
.91250
7387
.91875
7388
.92500
7389
.93125
7390
.93750
7391
.94375
7392
.95000
7393
.95625
7394
.96250
7395
.96875
7396
.97500
7397
.98125
7398
.98750
7399
.99375
7400 143.00000
7401
.00625
7402
.01250
7403
.01875
7404
.02500
7405
.03125
7406
.03750
7407
.04375
7408
.05000
7409
.05625
7410
.06250
7411
.06875
7412
.07500
7413
.08125
7414
.08750
7415
.09375
7416
.10000
7417
.10625
7418
.11250
7419
.11875
7420
.12500
7421
.1 3125
7422
.13750
7423
.14375
7424
.15000
7425
.15625
7426
.16250
7427
.16875
7428
.17500
7429
.18125
7430
.18750
7431
.19375
7432
.20000
7433
.20625
7434
.21250
7435
.21875
7436
.22500
7437
.23125
7438
.23750
7439
.24375
Chan.
Num.
Freq.
(MHz)
7440 143.25000
7441
.25625
7442
.26250
7443
.26875
7444
.27500
7445
.28125
7446
.28750
7447
.29375
7448
.30000
7449
.30625
7450
.31250
7451
.31875
7452
.32500
7453
.33125
7454
.33750
7455
.34375
7456
.35000
7457
.35625
7458
.36250
7459
.36875
7460
.37500
7461
.38125
7462
.38750
7463
.39375
7464
.40000
7465
.40625
7466
.41250
7467
.41875
7468
.42500
7469
.43125
7470
.43750
7471
.44375
7472
.45000
7473
.45625
7474
.46250
7475
.46875
7476
.47500
7477
.48125
7478
.48750
7479
.49375
7480 143.50000
7481
.50625
7482
.51250
7483
.51875
7484
.52500
7485
.53125
7486
.53750
7487
.54375
7488
.55000
7489
.55625
7490
.56250
7491
.56875
7492
.57500
7493
.58125
7494
.58750
7495
.59375
7496
.60000
7497
.60625
7498
.61250
7499
.61875
7500
.62500
7501
.63125
7502
.63750
7503
.64375
7504
.65000
7505
.65625
7506
.66250
7507
.66875
7508
.67500
7509
.68125
7510
.68750
7511
.69375
7512
.70000
7513
.70625
7514
.71250
Chan.
Num.
Freq.
(MHz)
7515 143.71875
7516
.72500
7517
.73125
7518
.73750
7519
.74375
7520 143.75000
7521
.75625
7522
.76250
7523
.76875
7524
.77500
7525
.78125
7526
.78750
7527
.79375
7528
.80000
7529
.80625
7530
.81250
7531
.81875
7532
.82500
7533
.83125
7534
.83750
7535
.84375
7536
.85000
7537
.85625
7538
.86250
7539
.86875
7540
.87500
7541
.88125
7542
.88750
7543
.89375
7544
.90000
7545
.90625
7546
.91250
7547
.91875
7548
.92500
7549
.93125
7550
.93750
7551
.94375
7552
.95000
7553
.95625
7554
.96250
7555
.96875
7556
.97500
7557
.98125
7558
.98750
7559
.99375
7560 144.00000
7561
.00625
7562
.01250
7563
.01875
7564
.02500
7565
.03125
7566
.03750
7567
.04375
7568
.05000
7569
.05625
7570
.06250
7571
.06875
7572
.07500
7573
.08125
7574
.08750
7575
.09375
7576
.10000
7577
.10625
7578
.11250
7579
.11875
7580
.12500
7581
.13125
7582
.13750
7583
.14375
7584
.15000
7585
.15625
7586
.16250
7587
.16875
7588
.17500
7589
.18125
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
7590 144.18750
7591
.19375
7592
.20000
7593
.20625
7594
.21250
7595
.21875
7596
.22500
7597
.23125
7598
.23750
7599
.24375
7600 144.25000
7601
.25625
7602
.26250
7603
.26875
7604
.27500
7605
.28125
7606
.28750
7607
.29375
7608
.30000
7609
.30625
7610
.31250
7611
.31875
7612
.32500
7613
.33125
7614
.33750
7615
.34375
7616
.35000
7617
.35625
7618
.36250
7619
.36875
7620
.37500
7621
.38125
7622
.38750
7623
.39375
7624
.40000
7625
.40625
7626
.41250
7627
.41875
7628
.42500
7629
.43125
7630
.43750
7631
.44375
7632
.45000
7633
.45625
7634
.46250
7635
.46875
7636
.47500
7637
.48125
7638
.48750
7639
.49375
7640 144.50000
7641
.50625
7642
.51250
7643
.51875
7644
.52500
7645
.53125
7646
.53750
7647
.54375
7648
.55000
7649
.55625
7650
.56250
7651
.56875
7652
.57500
7653
.58125
7654
.58750
7655
.59375
7656
.60000
7657
.60625
7658
.61250
7659
.61875
7660
.62500
7661
.63125
7662
.63750
7663
.64375
7664
.65000
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
144.65625
.66250
.66875
.67500
.68125
.68750
.69375
.70000
.70625
.71250
.7 1875
.72500
.73125
.73750
.74375
144.75000
.75625
.76250
.76875
.77500
.78125
.78750
.79375
.80000
.80625
.81250
.81875
.82500
.83125
.83750
.84375
.85000
.85625
.86250
.86875
.87500
.88125
.88750
.89375
.90000
.90625
.91250
.91875
.92500
.93125
.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
145.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/140 Channel Designation Table: 132 to 150 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
7740 145.12500
7741
.13125
7742
.13750
7743
.14375
7744
.15000
7745
.15625
7746
.16250
7747
.16875
7748
.17500
7749
.18125
7750
.18750
7751
.19375
7752
.20000
7753
.20625
7754
.21250
7755
.21875
7756
.22500
7757
.23125
7758
.23750
7759
.24375
7760 145.25000
7761
.25625
7762
.26250
7763
.26875
7764
.27500
7765
.28125
7766
.28750
7767
.29375
7768
.30000
7769
.30625
7770
.31250
7771
.31875
7772
.32500
7773
.33125
7774
.33750
7775
.34375
7776
.35000
7777
.35625
7778
.36250
7779
.36875
7780
.37500
7781
.38125
7782
.38750
7783
.39375
7784
.40000
7785
.40625
7786
.41250
7787
.41875
7788
.42500
7789
.43125
7790
.43750
7791
.44375
7792
.45000
7793
.45625
7794
.46250
7795
.46875
7796
.47500
7797
.48125
7798
.48750
7799
.49375
7800 145.50000
7801
.50625
7802
.51250
7803
.51875
7804
.52500
7805
.53125
7806
.53750
7807
.54375
7808
.55000
7809
.55625
7810
.56250
7811
.56875
7812
.57500
7813
.58125
7814
.58750
Chan.
Num.
Freq.
(MHz)
7815 145.59375
7816
.60000
7817
.60625
7818
.61250
7819
.61875
7820
.62500
7821
.63125
7822
.63750
7823
.64375
7824
.65000
7825
.65625
7826
.66250
7827
.66875
7828
.67500
7829
.68125
7830
.68750
7831
.69375
7832
.70000
7833
.70625
7834
.71250
7835
.71875
7836
.72500
7837
.73125
7838
.73750
7839
.74375
7840 145.75000
7841
.75625
7842
.76250
7843
.76875
7844
.77500
7845
.78125
7846
.78750
7847
.79375
7848
.80000
7849
.80625
7850
.81250
7851
.81875
7852
.82500
7853
.83125
7854
.83750
7855
.84375
7856
.85000
7857
.85625
7858
.86250
7859
.86875
7860
.87500
7861
.88125
7862
.88750
7863
.89375
7864
.90000
7865
.90625
7866
.91250
7867
.91875
7868
.92500
7869
.93125
7870
.93750
7871
.94375
7872
.95000
7873
.95625
7874
.96250
7875
.96875
7876
.97500
7877
.98125
7878
.98750
7879
.99375
7880 146.00000
7881
.00625
7882
.01250
7883
.01875
7884
.02500
7885
.03125
7886
.03750
7887
.04375
7888
.05000
7889
.05625
Chan.
Num.
Freq.
(MHz)
7890 146.06250
7891
.06875
7892
.07500
7893
.08125
7894
.08750
7895
.09375
7896
.10000
7897
.10625
7898
.11250
7899
.11875
7900
.12500
7901
.13125
7902
.13750
7903
.14375
7904
.15000
7905
.15625
7906
.16250
7907
.16875
7908
.17500
7909
.18125
7910
.18750
7911
.19375
7912
.20000
7913
.20625
7914
.21250
7915
.21875
7916
.22500
7917
.23125
7918
.23750
7919
.24375
7920 146.25000
7921
.25625
7922
.26250
7923
.26875
7924
.27500
7925
.28125
7926
.28750
7927
.29375
7928
.30000
7929
.30625
7930
.31250
7931
.31875
7932
.32500
7933
.33125
7934
.33750
7935
.34375
7936
.35000
7937
.35625
7938
.36250
7939
.36875
7940
.37500
7941
.38125
7942
.38750
7943
.39375
7944
.40000
7945
.40625
7946
.41250
7947
.41875
7948
.42500
7949
.43125
7950
.43750
7951
.44375
7952
.45000
7953
.45625
7954
.46250
7955
.46875
7956
.47500
7957
.48125
7958
.48750
7959
.49375
7960 146.50000
7961
.50625
7962
.51250
7963
.51875
7964
.52500
Chan.
Num.
Freq.
(MHz)
7965 146.53125
7966
.53750
7967
.54375
7968
.55000
7969
.55625
7970
.56250
7971
.56875
7972
.57500
7973
.58125
7974
.58750
7975
.59375
7976
.6 0000
7977
.60625
7978
.61250
7979
.61875
7980
.62500
7981
.63125
7982
.63750
7983
.64375
7984
.65000
7985
.65625
7986
.66250
7987
.66875
7988
.67500
7989
.68125
7990
.68750
7991
.69375
7992
.70000
7993
.70625
7994
.71250
7995
.71875
7996
.72500
7997
.73125
7998
.73750
7999
.74375
8000 146.75000
8001
.75625
8002
.76250
8003
.76875
8004
.77500
8005
.78125
8006
.78750
8007
.79375
8008
.80000
8009
.80625
8010
.81250
8011
.81875
8012
.82500
8013
.83125
8014
.83750
8015
.84375
8016
.85000
8017
.85625
8018
.86250
8019
.86875
8020
.87500
8021
.88125
8022
.88750
8023
.89375
8024
.90000
8025
.90625
8026
.91250
8027
.91875
8028
.92500
8029
.93125
8030
.93750
8031
.94375
8032
.95000
8033
.95625
8034
.96250
8035
.96875
8036
.97500
8037
.98125
8038
.98750
8039
.99375
Chan.
Num.
Freq.
(MHz)
8040 147.00000
8041
.00625
8042
.01250
8043
.01875
8044
.02500
8045
.03125
8046
.03750
8047
.04375
8048
.05000
8049
.05625
8050
.06250
8051
.06875
8052
.07500
8053
.08125
8054
.08750
8055
.09375
8056
.10000
8057
.10625
8058
.11250
8059
.11875
8060
.12500
8061
.13125
8062
.13750
8063
.14375
8064
.15000
8065
.15625
8066
.16250
8067
.16875
8068
.17500
8069
.18125
8070
.18750
8071
.19375
8072
.20000
8073
.20625
8074
.21250
8075
.21875
8076
.22500
8077
.23125
8078
.23750
8079
.24375
8080 147.25000
8081
.25625
8082
.26250
8083
.26875
8084
.27500
8085
.28125
8086
.28750
8087
.29375
8088
.30000
8089
.30625
8090
.31250
8091
.31875
8092
.32500
8093
.33125
8094
.33750
8095
.34375
8096
.35000
8097
.35625
8098
.36250
8099
.36875
8100
.37500
8101
.38125
8102
.38750
8103
.39375
8104
.40000
8105
.40625
8106
.41250
8107
.41875
8108
.42500
8109
.43125
8110
.43750
8111
.44375
8112
.45000
8113
.45625
8114
.46250
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
8115 147.46875
8116
.47500
8117
.48125
8118
.48750
8119
.49375
8120 147.50000
8121
.50625
8122
.51250
8123
.51875
8124
.52500
8125
.53125
8126
.53750
8127
.54375
8128
.55000
8129
.55625
8130
.56250
8131
.56875
8132
.57500
8133
.58125
8134
.58750
8135
.59375
8136
.60000
8137
.60625
8138
.61250
8139
.61875
8140
.62500
8141
.63125
8142
.63750
8143
.64375
8144
.65000
8145
.65625
8146
.66250
81 47
.66875
8148
.67500
8149
.68125
8150
.68750
8151
.69375
8152
.70000
8153
.7 0625
8154
.71250
8155
.71875
8156
.72500
8157
.73125
8158
.73750
8159
.74375
8160 147.75000
8161
.75625
8162
.76250
8163
.76875
8164
.77500
8165
.78125
8166
.78750
8167
.79375
8168
.80000
8169
.80625
8170
.81250
8171
.81875
8172
.82500
8173
.83125
8174
.83750
8175
.84375
8176
.85000
8177
.85625
8178
.86250
8179
.86875
8180
.87500
8181
.88125
8182
.88750
8183
.89375
8184
.90000
8185
.90625
8186
.91250
8187
.91875
8188
.92500
8189
.93125
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
147.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
148.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
148.25000
.25625
.26250
.26875
.27500
.28125
.28750
.29375
.30000
.30625
.31250
.31875
.32500
.33125
.33750
.34375
.35000
.35625
.36250
.36875
.37500
.38125
.38750
.39375
.40000
2-5
VT-3/140 Channel Designation Table: 132 to 150 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
8265 148.40625
8266
.41250
8267
.41875
8268
.42500
8269
.43125
8270
.43750
8271
.44375
8272
.45000
8273
.45625
8274
.46250
8275
.46875
8276
.47500
8277
.48125
8278
.48750
8279
.49375
8280 148.50000
8281
.50625
8282
.51250
8283
.51875
8284
.52500
8285
.53125
8286
.53750
8287
.54375
8288
.55000
8289
.55625
8290
.56250
8291
.56875
8292
.57500
8293
.58125
8294
.58750
8295
.59375
8296
.60000
8297
.60625
8298
.61250
8299
.61875
8300
.62500
8301
.63125
8302
.63750
8303
.64375
8304
.65000
8305
.65625
8306
.66250
8307
.66875
8308
.67500
8309
.68125
8310
.68750
8311
.69375
8312
.70000
8313
.70625
8314
.71250
8315
.71875
8316
.72500
8317
.73125
8318
.73750
8319
.74375
8320 148.75000
8321
.75625
8322
.76250
8323
.76875
8324
.77500
8325
.78125
8326
.78750
8327
.79375
8328
.80000
8329
.80625
8330
.81250
8331
.81875
8332
.82500
8333
.83125
8334
.83750
8335
.84375
8336
.85000
8337
.85625
8338
.86250
8339
.86875
2-6
Chan.
Num.
Freq.
(MHz)
8340 148.87500
8341
.88125
8342
.88750
8343
.89375
8344
.90000
8345
.90625
8346
.91250
8347
.91875
8348
.92500
8349
.93125
8350
.93750
8351
.94375
8352
.95000
8353
.95625
8354
.96250
8355
.96875
8356
.97500
8357
.98125
8358
.98750
8359
.99375
8360 149.00000
8361
.00625
8362
.01250
8363
.01875
8364
.02500
8365
.03125
8366
.03750
8367
.04375
8368
.05000
8369
.05625
8370
.06250
8371
.06875
8372
.07500
8373
.08125
8374
.08750
8375
.09375
8376
.10000
8377
.10625
8378
.11250
8379
.11875
8380
.12500
8381
.13125
8382
.13750
8383
.14375
8384
.15000
8385
.15625
83 86
.16250
8387
.16875
8388
.17500
8389
.18125
8390
.18750
8391
.19375
8392
.20000
8393
.20625
8394
.21250
8395
.21875
8396
.22500
8397
.23125
8398
.23750
8399
.24375
8400 14 9.25000
8401
.25625
8402
.26250
8403
.26875
8404
.27500
8405
.28125
8406
.28750
8407
.29375
8408
.30000
8409
.30625
8410
.31250
8411
.31875
8412
.32500
8413
.33125
8414
.33750
Chan.
Num.
Freq.
(MHz)
8415 149.34375
8416
.35000
8417
.35625
8418
.36250
8419
.36875
8420
.37500
8421
.38125
8422
.38750
8423
.39375
8424
.40000
8425
.40625
8426
.41250
8427
.41875
8428
.42500
8429
.43125
8430
.43750
8431
.44375
8432
.45000
8433
.45625
8434
.46250
8435
.46875
8436
.47500
8437
.48125
8438
.48750
8439
.49375
8440 149.50000
8441
.50625
8442
.51250
8443
.51875
8444
.52500
8445
.53125
8446
.53750
8447
.54375
8448
.55000
8449
.55625
8450
.56250
8451
.56875
8452
.57500
8453
.58125
8454
.58750
8455
.59375
8456
.60000
8457
.60625
8458
.61250
8459
.61875
8460
.62500
8461
.63125
8462
.63750
8463
.64375
8464
.65000
8465
.65625
8466
.66250
8467
.66875
8468
.67500
8469
.68125
8470
.68750
8471
.69375
8472
.70000
8473
.70625
8474
.71250
8475
.71875
8476
.72500
8477
.73125
8478
.73750
8479
.74375
8480 149.75000
8481
.75625
8482
.76250
8483
.76875
8484
.77500
8485
.78125
8486
.78750
8487
.79375
8488
.80000
8489
.80625
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
8490 149.81250
8491
.81875
8492
.82500
8493
.83125
8494
.83750
8495
.84375
8496
.85000
8497
.85625
8498
.86250
8499
.86875
85 00
.87500
8501
.88125
8502
.88750
8503
.89375
8504
.90000
8505
.90625
8506
.91250
8507
.91875
8508
.92500
8509
.93125
8510
.93750
8511
.94375
8512
.95000
8513
.95625
8514
.96250
8515
.96875
8516
.97500
8517
.98125
8518
.98750
8519
.99375
8520 150.00000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
3
Chan.
Num.
VT-3/160 Channel Designation Table: 150-174MHz, 5kHz Increments
Freq.
(MHz)
000 150.00000
001
.00500
002
.01000
003
.0 1500
004
.02000
005
.02500
006
.03000
007
.03500
008
.04000
009
.04500
010
.05000
011
.05500
012
.06000
013
.06500
014
.07000
015
.07500
016
.08000
017
.08500
018
.09000
019
.09500
020
.10000
021
.10500
022
.11000
023
.11500
024
.12000
025
.12500
026
.13000
027
.13500
028
.14000
029
.14500
030
.15000
031
.15500
032
.16000
033
.16500
034
.17000
035
.17500
036
.18000
037
.18500
038
.19000
039
.19500
040
.20000
041
.20500
042
.21000
043
.21500
044
.22000
045
.22500
046
.23000
047
.23500
048
.24000
049
.24500
050 150.25000
051
.25500
052
.26000
053
.26500
054
.27000
055
.27500
056
.28000
057
.28500
058
.29000
059
.29500
060
.30000
061
.30500
062
.31000
063
.31500
064
.32000
065
.32500
066
.33000
067
.33500
068
.34000
069
.34500
070
.35000
071
.35500
072
.36000
073
.36500
074
.37000
Chan.
Num.
Freq.
(MHz)
075 150.37500
076
.38000
077
.38500
078
.39000
079
.39500
080
.40000
081
.40500
082
.41000
083
.41500
084
.42000
085
.42500
086
.43000
087
.43500
088
.44000
089
.44500
090
.45000
091
.45500
092
.46000
093
.46500
094
.47000
095
.47500
096
.48000
097
.48500
098
.49000
099
.49500
100 150.50000
101
.50500
102
.51000
103
.51500
104
.52000
105
.52500
106
.53000
107
.5 3500
108
.54000
109
.54500
110
.55000
111
.55500
112
.56000
113
.56500
114
.57000
115
.57500
116
.58000
117
.58500
118
.59000
119
.59500
120
.60000
121
.60500
122
.61000
123
.61500
124
.62000
125
.62500
126
.63000
127
.63500
128
.64000
129
.64500
130
.65000
131
.65500
132
.66000
133
.66500
134
.67000
135
.67500
136
.68000
137
.68500
138
.69000
139
.69500
140
.70000
141
.70500
142
.71000
14 3
.71500
144
.72000
145
.72500
146
.73000
147
.73500
148
.74000
149
.74500
Chan.
Num.
150
151
152
153
154
155
15 6
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
Freq.
(MHz)
150.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
151.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
Chan.
Num.
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
29 6
297
298
299
Freq.
(MHz)
151.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
151.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.3 0000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
Chan.
Num.
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
Freq.
(MHz)
151.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
151.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
44 9
Freq.
(MHz)
151.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
152.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.0 6500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
Chan.
Num.
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
Freq.
(MHz)
152.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
152.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
3-1
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
3-2
Freq.
(MHz)
152.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
152.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
Chan.
Num.
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
Freq.
(MHz)
153.00000
.00500
.01000
.01500
.02000
.02500
.0 3000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
153.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
Chan.
Num.
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
Freq.
(MHz)
153.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
153.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
Chan.
Num.
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
Freq.
(MHz)
153.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
154.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
Chan.
Num.
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
Freq.
(MHz)
154.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
154.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
Chan.
Num.
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
154.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
154.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
154.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
155.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
1050 155.25000
1051
.25500
1052
.26000
1053
.26500
1054
.27000
1055
.27500
1056
.28000
1057
.28500
1058
.29000
1059
.29500
1060
.30000
1061
.30500
1062
.31000
1063
.31500
1064
.32000
1065
.32500
1066
.33000
1067
.33500
1068
.34000
1069
.34500
1070
.35000
1071
.35500
1072
.36000
1073
.36500
1074
.37000
1075
.37500
1076
.38000
1077
.38500
1078
.39000
1079
.39500
1080
.40000
1081
.40500
1082
.41000
1083
.41500
1084
.42000
1085
.42500
1086
.43000
1087
.43500
1088
.44000
1089
.44500
1090
.45000
1091
.45500
1092
.46000
1093
.46500
1094
.47000
1095
.47500
1096
.48000
1097
.48500
1098
.49000
1099
.49500
1100 155.50000
1101
.50500
1102
.51000
1103
.51500
1104
.52000
1105
.52500
1106
.53000
1107
.53500
1108
.54000
1109
.54500
1110
.55000
1111
.55500
1112
.56000
1113
.56500
1114
.57000
1115
.57500
1116
.58000
1117
.58500
1118
.59000
1119
.59500
1120
.60000
1121
.60500
1122
.61000
1123
.61500
1124
.62000
Chan.
Num.
Freq.
(MHz)
11 25 155.62500
1126
.63000
1127
.63500
1128
.64000
1129
.64500
1130
.65000
1131
.65500
1132
.66000
1133
.66500
1134
.67000
1135
.67500
1136
.68000
1137
.68500
1138
.69000
1139
.69500
1140
.70000
1141
.70500
1142
.71000
1143
.71500
1144
.72000
1145
.72500
1146
.73000
1147
.73500
1148
.74000
1149
.74500
1150 155.75000
1151
.75500
1152
.76000
1153
.76500
1154
.77000
1155
.77500
1156
.78000
1157
.78500
1158
.79000
1159
.79500
1160
.80000
1161
.80500
1162
.81000
1163
.81500
1164
.82000
1165
.82500
1166
.83000
1167
.83500
1168
.84000
1169
.84500
1170
.85000
1171
.85500
1172
.86000
1173
.86500
1174
.87000
1175
.87500
1176
.88000
1177
.88500
1178
.89000
1179
.89500
1180
.90000
1181
.90500
1182
.91000
1183
.91500
1184
.92000
1185
.92500
1186
.93000
1187
.93500
1188
.94000
1189
.94500
1190
.95000
1191
.95500
1192
.96000
1193
.96500
1194
.97000
1195
.97500
1196
.98000
1197
.98500
1198
.99000
1199
.99500
Chan.
Num.
Freq.
(MHz)
1200 156.00000
1201
.00500
1202
.01000
1203
.01500
1204
.02000
1205
.02500
1206
.03000
1207
.03500
1208
.04000
1209
.04500
1210
.05000
1211
.05500
1212
.06000
1213
.06500
1214
.07000
1215
.07500
1216
.08000
1217
.08500
1218
.09000
1219
.09500
1220
.10000
1221
.10500
1222
.11000
1223
.11500
1224
.12000
1225
.12500
1226
.13000
1227
.13500
1228
.14000
1229
.14500
1230
.15000
1231
.15500
1232
.16000
1233
.1 6500
1234
.17000
1235
.17500
1236
.18000
1237
.18500
1238
.19000
1239
.19500
1240
.20000
1241
.20500
1242
.21000
1243
.21500
1244
.22000
1245
.22500
1246
.23000
1247
.23500
1248
.24000
1249
.24500
1250 156.25000
1251
.25500
1252
.26000
1253
.26500
1254
.27000
1255
.27500
1256
.28000
1257
.28500
1258
.29000
1259
.29500
1260
.30000
1261
.30500
1262
.31000
1263
.31500
1264
.32000
1265
.32500
1266
.33000
1267
.33500
1268
.34000
1269
.34500
1270
.35000
1271
.35500
1272
.36000
1273
.36500
1274
.37000
Chan.
Num.
Freq.
(MHz)
1275 156.37500
1276
.38000
1277
.38500
1278
.39000
1279
.39500
1280
.40000
1281
.40500
1282
.41000
1283
.41500
1284
.42000
1285
.42500
1286
.43000
1287
.43500
1288
.44000
1289
.44500
1290
.45000
1291
.45500
1292
.46000
1293
.46500
1294
.47000
1295
.47500
1296
.48000
1297
.48500
1298
.49000
1299
.49500
1300 156.50000
1301
.50500
1302
.51000
1303
.51500
1304
.52000
1305
.52500
1306
.53000
1307
.53500
1308
.54000
1309
.54500
1310
.55000
1311
.55500
1312
.56000
1313
.56500
1314
.57000
1315
.57500
1316
.58000
1317
.5 8500
1318
.59000
1319
.59500
1320
.60000
1321
.60500
1322
.61000
1323
.61500
1324
.62000
1325
.62500
1326
.6 3000
1327
.63500
1328
.64000
1329
.64500
1330
.65000
1331
.65500
1332
.66000
1333
.66500
1334
.67000
1335
.67500
1336
.68000
1337
.68500
1338
.69000
1339
.69500
1340
.70000
1341
.70500
1342
.71000
1343
.71500
1344
.72000
1345
.72500
1346
.73000
1347
.73500
1348
.74000
1349
.74500
Chan.
Num.
Freq.
(MHz)
1350 156.75000
1351
.75500
1352
.76000
1353
.76500
1354
.77000
1355
.77500
1356
.78000
1357
.78500
1358
.79000
1359
.79500
1360
.80000
1361
.80500
1362
.81000
1363
.81500
1364
.82000
1365
.82500
1366
.83000
1367
.83500
1368
.84000
1369
.84500
1370
.85000
1371
.85500
1372
.86000
1373
.86500
1374
.87000
1375
.87500
1376
.88000
1377
.88500
1378
.89000
1379
.89500
1380
.90000
1381
.90500
1382
.91000
1383
.91500
1384
.92000
1385
.92500
1386
.93000
1387
.93500
1388
.94000
1389
.94500
1390
.95000
1391
.95500
1392
.96000
1393
.96500
1394
.97000
1395
.97500
1396
.98000
1397
.98500
1398
.99000
1399
.99500
1400 157.00000
1401
.00500
1402
.01000
1403
.01500
1404
.02000
1405
.02500
1406
.03000
1407
.03500
1408
.04000
1409
.04500
1410
.0 5000
1411
.05500
1412
.06000
1413
.06500
1414
.07000
1415
.07500
1416
.08000
1417
.08500
1418
.09000
1419
.09500
1420
.10000
1421
.10500
1422
.11000
1423
.11500
1424
.12000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
1425 157.12500
1426
.13000
1427
.13500
1428
.14000
1429
.14500
1430
.15000
1431
.15500
1432
.16000
1433
.16500
1434
.17000
1435
.17500
1436
.18000
1437
.18500
1438
.19000
1439
.19500
1440
.20000
1441
.20500
1442
.21000
1443
.21500
1444
.22000
1445
.22500
1446
.23000
1447
.23500
1448
.24000
1449
.24500
1450 157.25000
1451
.25500
1452
.26000
1453
.26500
1454
.27000
1455
.27500
1456
.28000
1457
.28500
1458
.29000
1459
.29500
1460
.30000
1461
.30500
1462
.31000
1463
.31500
1464
.32000
1465
.32500
1466
.33000
1467
.33500
1468
.34000
1469
.34500
1470
.35000
1471
.35500
1472
.36000
1473
.36500
1474
.37000
1475
.37500
1476
.38000
1477
.38500
1478
.39000
1479
.39500
1480
.40000
1481
.40500
1482
.41000
1483
.41500
1484
.42000
1485
.42500
1486
.43000
1487
.43500
1488
.44000
1489
.44500
1490
.45000
1491
.45500
1492
.46000
1493
.46500
1494
.4 7000
1495
.47500
1496
.48000
1497
.48500
1498
.49000
1499
.49500
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
157.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
157.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
3-3
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
1575 157.87500
1576
.88000
1577
.88500
1578
.89000
1579
.89500
1580
.90000
1581
.90500
1582
.91000
1583
.91500
1584
.92000
1585
.92500
1586
.93000
1587
.93500
1588
.94000
1589
.94500
1590
.95000
1591
.95500
1592
.96000
1593
.96500
1594
.97000
1595
.97500
1596
.98000
1597
.98500
1598
.99000
1599
.99500
1600 158.00000
1601
.00500
1602
.01000
1603
.01500
1604
.02000
1605
.02500
1606
.03000
1607
.03500
1608
.04000
1609
.04500
1610
.05000
1611
.05500
1612
.06000
1613
.06500
1614
.07000
1615
.07500
1616
.08000
1617
.08500
1618
.09000
1619
.09500
1620
.10000
1621
.10500
1622
.11000
1623
.11500
1624
.12000
1625
.12500
1626
.13000
1627
.13500
1628
.14000
1629
.14500
1630
.15000
1631
.15500
1632
.16000
1633
.16500
1634
.17000
1635
.17500
1636
.18000
1637
.18500
1638
.19000
1639
.19500
1640
.20000
1641
.20500
1642
.21000
1643
.21500
1644
.22000
1645
.22500
1646
.23000
1647
.23500
1648
.24000
1649
.24500
3-4
Chan.
Num.
Freq.
(MHz)
1650 158.25000
1651
.25500
1652
.26000
1653
.26500
1654
.27000
1655
.27500
1656
.28000
1657
.28500
1658
.29000
1659
.29500
1660
.30000
1661
.30500
1662
.31000
1663
.31500
1664
.32000
1665
.32500
1666
.33000
1667
.33500
1668
.34000
1669
.34500
1670
.35000
1671
.35500
1672
.36000
1673
.36500
1674
.37000
1675
.37500
1676
.38000
1677
.38500
1678
.39000
1679
.39500
1680
.40000
1681
.40500
1682
.41000
1683
.41500
1684
.42000
1685
.42500
1686
.43000
16 87
.43500
1688
.44000
1689
.44500
1690
.45000
1691
.45500
1692
.46000
1693
.46500
1694
.47000
1695
.47500
1696
.48000
1697
.48500
1698
.49000
1699
.49500
1700 158.50000
1701
.50500
1702
.51000
1703
.51500
1704
.52000
1705
.52500
1706
.53000
1707
.53500
1708
.54000
1709
.54500
1710
.55000
1711
.55500
1712
.56000
1713
.56500
1714
.57000
1715
.57500
1716
.58000
1717
.58500
1718
.59000
1719
.59500
1720
.60000
1721
.60500
1722
.61000
1723
.61500
1724
.62000
Chan.
Num.
Freq.
(MHz)
1725 158.62500
1726
.63000
1727
.63500
1728
.64000
1729
.64500
1730
.65000
1731
.65500
1732
.66000
1733
.66500
1734
.67000
1735
.67500
1736
.68000
1737
.68500
1738
.69000
1739
.69500
1740
.70000
1741
.70500
1742
.71000
1743
.71500
1744
.72000
1745
.72500
1746
.73000
1747
.73500
1748
.74000
1749
.74500
1750 158.75000
1751
.75500
1752
.76000
1753
.76500
1754
.77000
1755
.77500
1756
.78000
1757
.78500
1758
.79000
1759
.79500
1760
.80000
1761
.80500
1762
.81000
1763
.81500
1764
.82000
1765
.82500
1766
.83000
1767
.83500
1768
.84000
1769
.84500
1770
.85000
17 71
.85500
1772
.86000
1773
.86500
1774
.87000
1775
.87500
1776
.88000
1777
.88500
1778
.89000
1779
.89500
1780
.90000
1781
.90500
1782
.91000
1783
.91500
1784
.92000
1785
.92500
1786
.93000
1787
.93500
1788
.94000
1789
.94500
1790
.95000
1791
.95500
1792
.96000
1793
.96500
1794
.97000
1795
.97500
1796
.98000
1797
.98500
1798
.99000
1799
.99500
Chan.
Num.
Freq.
(MHz)
1800 159.00000
1801
.00500
1802
.01000
1803
.01500
1804
.02000
1805
.02500
1806
.03000
1807
.03500
1808
.04000
1809
.04500
1810
.05000
1811
.05500
1812
.06000
1813
.06500
1814
.07000
1815
.07500
1816
.08000
1817
.08500
1818
.09000
1819
.09500
1820
.10000
1821
.10500
1822
.11000
1823
.11500
1824
.12000
1825
.12500
1826
.13000
1827
.13500
1828
.14000
1829
.14500
1830
.15000
1831
.15500
1832
.16000
1833
.16500
1834
.17000
1835
.17500
1836
.18000
1837
.18500
1838
.19000
1839
.19500
1840
.20000
1841
.20500
1842
.21000
1843
.21500
1844
.22000
1845
.22500
1846
.23000
1847
.23500
1848
.24000
1849
.24500
1850 159.25000
1851
.25500
1852
.26000
1853
.26500
1854
.27000
1855
.27500
1856
.28000
1857
.28500
1858
.29000
1859
.29500
1860
.30000
1861
.30500
1862
.31000
1863
.31500
1864
.32000
1865
.32500
1866
.33000
1867
.33500
1868
.34000
1869
.34500
1870
.35000
1871
.35500
1872
.36000
1873
.36500
1874
.37000
Chan.
Num.
Freq.
(MHz)
1875 159.37500
1876
.38000
1877
.38500
1878
.39000
1879
.39500
1880
.40000
1881
.40500
1882
.41000
1883
.41500
1884
.42000
1885
.42500
1886
.43000
1887
.43500
1888
.44000
1889
.44500
1890
.45000
1891
.45500
1892
.46000
1893
.46500
1894
.47000
1895
.47500
1896
.48000
1897
.48500
1898
.49000
1899
.49500
1900 159.50000
1901
.50500
1902
.51000
1903
.51500
1904
.52000
1905
.52500
1906
.53000
1907
.53500
1908
.54000
1909
.54500
1910
.55000
1911
.55500
1912
.56000
1913
.56500
1914
.57000
1915
.57500
1916
.58000
1917
.58500
1918
.59000
1919
.59500
1920
.60000
1921
.60500
1922
.61000
1923
.61500
1924
.62000
1925
.62500
1926
.63000
1927
.63500
1928
.64000
1929
.64500
1930
.65000
1931
.65500
1932
.66000
1933
.66500
1934
.67000
1935
.67500
1936
.68000
1937
.68500
1938
.69000
1939
.69500
1940
.70000
1941
.70500
1942
.71000
1943
.71500
1944
.72000
1945
.72500
1946
.73000
1947
.73500
1948
.74000
1949
.74500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
1950 159.75000
1951
.75500
1952
.76000
1953
.76500
1954
.77000
1955
.77500
1956
.78000
1957
.78500
1958
.79000
1959
.79500
1960
.80000
1961
.80500
1962
.81000
1963
.81500
1964
.82000
1965
.82500
1966
.83000
1967
.83500
1968
.84000
1969
.84500
1970
.85000
1971
.85500
1972
.86000
1973
.86500
1974
.87000
1975
.87500
1976
.88000
1977
.88500
1978
.89000
1979
.89500
1980
.90000
1981
.90500
1982
.91000
1983
.91500
1984
.92000
1985
.92500
1986
.93000
1987
.93500
1988
.94000
1989
.94500
1990
.95000
1991
.95500
1992
.96000
1993
.96500
1994
.97000
1995
.97500
1996
.98000
1997
.98500
1998
.99000
1999
.99500
2000 160.00000
2001
.00500
2002
.01000
2003
.01500
2004
.02000
2005
.02500
2006
.03000
2007
.03500
2008
.04000
2009
.04500
2010
.05000
2011
.05500
2012
.06000
2013
.06500
2014
.07000
2015
.07500
2016
.08000
2017
.08500
2018
.09000
2019
.09500
2020
.10000
2021
.10500
2022
.11000
2023
.11500
2024
.12000
2025
2026
2027
2028
2029
2030
2031
2032
2033
20 34
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
160.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
160.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
2100 160.50000
2101
.50500
2102
.51000
2103
.51500
2104
.52000
2105
.52500
2106
.53000
2107
.53500
2108
.54000
2109
.54500
2110
.55000
2111
.55500
2112
.56000
2113
.56500
2114
.57000
2115
.57500
2116
.58000
2117
.58500
2118
.59000
2119
.59500
2120
.60000
2121
.60500
2122
.61000
2123
.61500
2124
.62000
2125
.62500
2126
.63000
2127
.63500
2128
.64000
2129
.64500
2130
.65000
2131
.65500
2132
.66000
2133
.66500
2134
.67000
2135
.67500
2136
.68000
2137
.68500
2138
.69000
2139
.69500
2140
.70000
2141
.70500
2142
.71000
2143
.71500
2144
.7 2000
2145
.72500
2146
.73000
2147
.73500
2148
.74000
2149
.74500
2150 160.75000
2151
.75500
2152
.76000
2153
.7 6500
2154
.77000
2155
.77500
2156
.78000
2157
.78500
2158
.79000
2159
.79500
2160
.80000
2161
.80500
2162
.81000
2163
.81500
2164
.82000
2165
.82500
2166
.83000
2167
.83500
2168
.84000
2169
.84500
2170
.85000
2171
.85500
2172
.86000
2173
.86500
2174
.87000
Chan.
Num.
Freq.
(MHz)
2175 160.87500
2176
.88000
2177
.88500
2178
.89000
2179
.89500
2180
.90000
2181
.90500
2182
.91000
2183
.91500
2184
.92000
2185
.92500
2186
.93000
2187
.93500
2188
.94000
2189
.94500
2190
.95000
2191
.95500
2192
.96000
2193
.96500
2194
.97000
2195
.97500
2196
.98000
2197
.98500
2198
.99000
2199
.99500
2200 161.00000
2201
.00500
2202
.01000
2203
.01500
2204
.02000
2205
.02500
2206
.03000
2207
.03500
2208
.04000
2209
.04500
2210
.05000
2211
.05500
2212
.06000
2213
.06500
2214
.07000
2215
.07500
2216
.08000
2217
.08500
2218
.09000
2219
.09500
2220
.10000
2221
.10500
2222
.11000
2223
.11500
2224
.12000
2225
.12500
2226
.13000
2227
.13500
2228
.14000
2229
.14500
2230
.15000
2231
.15500
2232
.16000
2233
.16500
2234
.17000
2235
.17500
2236
.18000
2237
.1 8500
2238
.19000
2239
.19500
2240
.20000
2241
.20500
2242
.21000
2243
.21500
2244
.22000
2245
.22500
2246
.23000
2247
.23500
2248
.24000
2249
.24500
Chan.
Num.
Freq.
(MHz)
2250 161.25000
2251
.25500
2252
.26000
2253
.26500
2254
.27000
2255
.27500
2256
.28000
2257
.28500
2258
.29000
2259
.29500
2260
.30000
2261
.30500
2262
.31000
2263
.31500
2264
.32000
2265
.32500
2266
.33000
2267
.33500
2268
.34000
2269
.34500
2270
.35000
2271
.35500
2272
.36000
2273
.36500
2274
.37000
2275
.37500
2276
.38000
2277
.38500
2278
.39000
2279
.39500
2280
.40000
2281
.40500
2282
.41000
2283
.41500
2284
.42000
2285
.42500
2286
.43000
2287
.43500
2288
.44000
2289
.44500
2290
.45000
2291
.45500
2292
.46000
2293
.46500
2294
.47000
2295
.47500
2296
.48000
2297
.48500
2298
.49000
2299
.49500
2300 161.50000
2301
.50500
2302
.51000
2303
.51500
2304
.52000
2305
.52500
2306
.53000
2307
.53500
2308
.54000
2309
.54500
2310
.55000
2311
.55500
2312
.56000
2313
.56500
2314
.57000
2315
.57500
2316
.58000
2317
.58500
2318
.59000
2319
.59500
2320
.60000
2321
.6 0500
2322
.61000
2323
.61500
2324
.62000
Chan.
Num.
Freq.
(MHz)
2325 161.62500
2326
.63000
2327
.63500
2328
.64000
2329
.64500
2330
.65000
2331
.65500
2332
.66000
2333
.66500
2334
.67000
2335
.67500
2336
.68000
2337
.68500
2338
.69000
2339
.69500
2340
.70000
2341
.70500
2342
.71000
2343
.71500
2344
.72000
2345
.72500
2346
.73000
2347
.73500
2348
.74000
2349
.74500
2350 161.75000
2351
.75500
2352
.76000
2353
.76500
2354
.77000
2355
.77500
2356
.78000
2357
.78500
2358
.79000
2359
.79500
2360
.80000
2361
.80500
2362
.81000
2363
.81500
2364
.82000
2365
.82500
2366
.83000
2367
.83500
2368
.84000
2369
.84500
2370
.85000
2371
.85500
2372
.86000
2373
.86500
2374
.87000
2375
.87500
2376
.88000
2377
.88500
2378
.89000
2379
.89500
2380
.90000
2381
.90500
2382
.91000
2383
.91500
2384
.92000
2385
.92500
2386
.93000
2387
.93500
2388
.94000
2389
.94500
2390
.95000
2391
.95500
2392
.96000
2393
.96500
2394
.97000
2395
.97500
2396
.98000
2397
.98500
2398
.99000
2399
.99500
Chan.
Num.
Freq.
(MHz)
2400 162.00000
2401
.00500
2402
.01000
2403
.01500
2404
.02000
2405
.02500
2406
.03000
2407
.03500
2408
.04000
2409
.04500
2410
.05000
2411
.05500
2412
.06000
2413
.06500
2414
.07000
2415
.07500
2416
.08000
2417
.08500
2418
.09000
2419
.09500
2420
.10000
2421
.10500
2422
.11000
2423
.11500
2424
.12000
2425
.12500
2426
.13000
2427
.13500
2428
.14000
2429
.14500
2430
.15000
2431
.15500
2432
.16000
2433
.16500
2434
.17000
2435
.17500
2436
.18000
2437
.18500
2438
.19000
2439
.19500
2440
.20000
2441
.20500
2442
.21000
2443
.21500
2444
.22000
2445
.22500
2446
.23000
2447
.23500
2448
.24000
2449
.24500
2450 162.25000
2451
.25500
2452
.26000
2453
.26500
2454
.27000
2455
.27500
2456
.28000
2457
.28500
2458
.29000
2459
.29500
2460
.30000
2461
.30500
2462
.31000
2463
.31500
2464
.32000
2465
.32500
2466
.33000
2467
.33500
2468
.34000
2469
.34500
2470
.35000
2471
.35500
2472
.36000
2473
.36500
2474
.37000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
2475 162.37500
2476
.38000
2477
.38500
2478
.39000
2479
.39500
2480
.40000
2481
.40500
2482
.41000
2483
.41500
2484
.42000
2485
.42500
2486
.43000
2487
.43500
2488
.44000
2489
.44500
2490
.45000
2491
.45500
2492
.46000
2493
.46500
2494
.47000
2495
.47500
2496
.48000
2497
.48500
2498
.49000
2499
.49500
2500 162.50000
2501
.50500
2502
.51000
2503
.51500
2504
.52000
2505
.52500
2506
.53000
2507
.53500
2508
.54000
2509
.54500
2510
.55000
2511
.55500
2512
.56000
2513
.56500
2514
.57000
2515
.57500
2516
.58000
2517
.58500
2518
.59000
2519
.59500
2520
.60000
2521
.60500
2522
.61000
2523
.61500
2524
.62000
2525
.62500
2526
.63000
2527
.63500
2528
.64000
2529
.64500
2530
.65000
2531
.65500
2532
.66000
2533
.66500
2534
.67000
2535
.67500
2536
.68000
2537
.68500
2538
.69000
2539
.69500
2540
.70000
2541
.70500
2542
.71000
2543
.71500
2544
.72000
2545
.72500
2546
.73000
2547
.73500
2548
.74000
2549
.74500
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
162.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.9 2000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
163.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
3-5
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
2625 163.12500
2626
.13000
2627
.13500
2628
.14000
2629
.14500
2630
.15000
2631
.15500
2632
.16000
2633
.16500
2634
.17000
2635
.17500
2636
.18000
2637
.18500
2638
.19000
2639
.19500
2640
.20000
2641
.20500
2642
.21000
2643
.21500
2644
.22000
2645
.22500
2646
.23000
2647
.23500
2648
.24000
2649
.24500
2650 163.25000
2651
.25500
2652
.26000
2653
.26500
2654
.27000
2655
.27500
2656
.28000
2657
.28500
2658
.29000
2659
.29500
2660
.30000
2661
.30500
2662
.31000
2663
.31500
2664
.32000
2665
.32500
2666
.33000
2667
.33500
2668
.34000
2669
.34500
2670
.35000
2671
.35500
2672
.36000
2673
.36500
2674
.37000
2675
.37500
2676
.38000
2677
.38500
2678
.39000
2679
.39500
2680
.40000
2681
.40500
2682
.41000
2683
.41500
2684
.42000
2685
.42500
2686
.43000
2687
.43500
2688
.44000
2689
.44500
2690
.45000
2691
.45500
2692
.46000
2693
.46500
2694
.47000
2695
.47500
2696
.48000
2697
.48500
2698
.49000
2699
.49500
3-6
Chan.
Num.
Freq.
(MHz)
2700 163.50000
2701
.50500
2702
.51000
2703
.51500
2704
.52000
2705
.52500
2706
.53000
2707
.53500
2708
.54000
2709
.54500
2710
.55000
2711
.55500
2712
.56000
2713
.56500
2714
.57000
2715
.57500
2716
.58000
2717
.58500
2718
.59000
2719
.59500
2720
.60000
2721
.60500
2722
.61000
2723
.61500
2724
.62000
2725
.62500
2726
.63000
2727
.63500
2728
.64000
2729
.64500
2730
.65000
2731
.65500
2732
.66000
2733
.66500
2734
.67000
2735
.67500
2736
.68000
2737
.68500
2738
.69000
2739
.69500
2740
.70000
2741
.70500
2742
.71000
2743
.71500
2744
.72000
2745
.72500
2746
.73000
2747
.73500
2748
.74000
2749
.74500
2750 163.75000
2751
.75500
2752
.76000
2753
.76500
2754
.77000
2755
.77500
2756
.78000
2757
.78500
2758
.79000
2759
.79500
2760
.80000
2761
.80500
2762
.81000
2763
.81500
2764
.82000
2765
.82500
2766
.83000
2767
.83500
2768
.84000
2769
.84500
2770
.85000
2771
.85500
2772
.86000
2773
.86500
2774
.87000
Chan.
Num.
Freq.
(MHz)
2775 163.87500
2776
.88000
27 77
.88500
2778
.89000
2779
.89500
2780
.90000
2781
.90500
2782
.91000
2783
.91500
2784
.92000
2785
.92500
2786
.93000
2787
.93500
2788
.94000
2789
.94500
2790
.95000
2791
.95500
2792
.96000
2793
.96500
2794
.97000
2795
.97500
2796
.98000
2797
.98500
2798
.99000
2799
.99500
2800 164.00000
2801
.00500
2802
.01000
2803
.01500
2804
.02000
2805
.02500
2806
.03000
2807
.03500
2808
.04000
2809
.04500
2810
.05000
2811
.05500
2812
.06000
2813
.06500
2814
.07000
2815
.07500
2816
.08000
2817
.08500
2818
.09000
2819
.09500
2820
.10000
2821
.10500
2822
.11000
2823
.11500
2824
.12000
2825
.12500
2826
.13000
2827
.13500
2828
.14000
2829
.14500
2830
.15000
2831
.15500
2832
.16000
2833
.16500
2834
.17000
2835
.17500
2836
.18000
2837
.18500
2838
.19000
2839
.19500
2840
.20000
2841
.20500
2842
.21000
2843
.21500
2844
.22000
2845
.22500
2846
.23000
2847
.23500
2848
.24000
2849
.24500
Chan.
Num.
Freq.
(MHz)
2850 164.25000
2851
.25500
2852
.26000
2853
.26500
2854
.27000
2855
.27500
2856
.28000
2857
.28500
2858
.29000
2859
.29500
2860
.30000
28 61
.30500
2862
.31000
2863
.31500
2864
.32000
2865
.32500
2866
.33000
2867
.33500
2868
.34000
2869
.34500
2870
.35000
2871
.35500
2872
.36000
2873
.36500
2874
.37000
2875
.37500
2876
.38000
2877
.38500
2878
.39000
2879
.39500
2880
.40000
2881
.40500
2882
.41000
2883
.41500
2884
.42000
2885
.42500
2886
.43000
2887
.43500
2888
.44000
2889
.44500
2890
.45000
2891
.45500
2892
.46000
2893
.46500
2894
.47000
2895
.47500
2896
.48000
2897
.48500
2898
.49000
2899
.49500
2900 164.50000
2901
.50500
2902
.51000
2903
.51500
2904
.52000
2905
.52500
2906
.53000
2907
.53500
2908
.54000
2909
.54500
2910
.55000
2911
.55500
2912
.56000
2913
.56500
2914
.57000
2915
.57500
2916
.58000
2917
.58500
2918
.59000
2919
.59500
2920
.60000
2921
.60500
2922
.61000
2923
.61500
2924
.62000
Chan.
Num.
Freq.
(MHz)
2925 164.62500
2926
.63000
2927
.63500
2928
.64000
2929
.64500
2930
.65000
2931
.65500
2932
.66000
2933
.66500
2934
.67000
2935
.67500
2936
.68000
2937
.68500
2938
.69000
2939
.69500
2940
.70000
2941
.70500
2942
.71000
2943
.71500
2944
.72000
29 45
.72500
2946
.73000
2947
.73500
2948
.74000
2949
.74500
2950 164.75000
2951
.75500
2952
.76000
2953
.76500
29 54
.77000
2955
.77500
2956
.78000
2957
.78500
2958
.79000
2959
.79500
2960
.80000
2961
.80500
2962
.81000
2963
.81500
2964
.82000
2965
.82500
2966
.83000
2967
.83500
2968
.84000
2969
.84500
2970
.85000
2971
.85500
2972
.86000
2973
.86500
2974
.87000
2975
.87500
2976
.88000
2977
.88500
2978
.89000
2979
.89500
2980
.90000
2981
.90500
2982
.91000
2983
.91500
2984
.92000
2985
.92500
2986
.93000
2987
.93500
2988
.94000
2989
.94500
2990
.95000
2991
.95500
2992
.96000
2993
.96500
2994
.97000
2995
.97500
2996
.98000
2997
.98500
2998
.99000
2999
.99500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
3000 165.00000
3001
.00500
3002
.01000
3003
.01500
3004
.02000
3005
.02500
3006
.03000
3007
.03500
3008
.04000
3009
.04500
3010
.05000
3011
.05500
3012
.06000
3013
.06500
3014
.07000
3015
.07500
3016
.08000
3017
.08500
3018
.09000
3019
.09500
3020
.10000
3021
.10500
3022
.11000
3023
.11500
3024
.12000
3025
.12500
3026
.13000
3027
.13500
3028
.14000
3029
.14500
3030
.15000
3031
.15500
3032
.16000
3033
.16500
3034
.17000
3035
.17500
3036
.18000
3037
.18500
30 38
.19000
3039
.19500
3040
.20000
3041
.20500
3042
.21000
3043
.21500
3044
.22000
3045
.22500
3046
.23000
3047
.23500
3048
.24000
3049
.24500
3050 165.25000
3051
.25500
3052
.26000
3053
.26500
3054
.27000
3055
.27500
3056
.28000
3057
.28500
3058
.29000
3059
.29500
3060
.30000
3061
.30500
3062
.31000
3063
.31500
3064
.32000
3065
.32500
3066
.33000
3067
.33500
3068
.34000
3069
.34500
3070
.35000
3071
.35500
3072
.36000
3073
.36500
3074
.37000
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
31 22
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
165.37500
.38000
.38500
.39000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
165.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
3150 165.75000
3151
.75500
3152
.76000
3153
.76500
3154
.77000
3155
.77500
3156
.78000
3157
.78500
3158
.79000
3159
.79500
3160
.80000
3161
.80500
3162
.81000
3163
.81500
3164
.82000
3165
.82500
3166
.83000
3167
.83500
3168
.84000
3169
.84500
3170
.85000
3171
.85500
3172
.86000
3173
.86500
3174
.87000
3175
.87500
3176
.88000
3177
.88500
3178
.89000
3179
.89500
3180
.90000
3181
.90500
3182
.91000
3183
.91500
3184
.92000
3185
.92500
3186
.93000
3187
.93500
3188
.94000
3189
.94500
3190
.95000
3191
.95500
3192
.96000
3193
.96500
3194
.97000
3195
.97500
3196
.98000
3197
.98500
3198
.99000
3199
.99500
3200 166.00000
3201
.00500
3202
.01000
3203
.01500
3204
.02000
3205
.02500
3206
.03000
3207
.03500
3208
.04000
3209
.04500
3210
.05000
3211
.05500
3212
.06000
3213
.06500
3214
.07000
3215
.07500
3216
.08000
3217
.08500
3218
.09000
3219
.09500
3220
.10000
3221
.10500
3222
.11000
3223
.11500
3224
.12000
Chan.
Num.
Freq.
(MHz)
3225 166.12500
3226
.13000
3227
.13500
3228
.14000
3229
.14500
3230
.15000
3231
.15500
3232
.16000
3233
.16500
3234
.17000
3235
.17500
3236
.18000
3237
.18500
3238
.19000
3239
.19500
3240
.20000
3241
.20500
3242
.21000
3243
.21500
3244
.22000
3245
.22500
3246
.23000
3247
.23500
3248
.24000
3249
.24500
3250 166.25000
3251
.25500
3252
.26000
3253
.26500
3254
.27000
3255
.27500
3256
.28000
3257
.28500
3258
.29000
3259
.29500
3260
.30000
3261
.30500
3262
.31000
3263
.31500
3264
.32000
3265
.32500
3266
.33000
3267
.33500
3268
.34000
3269
.34500
3270
.35000
3271
.35500
3272
.36000
3273
.36500
3274
.37000
3275
.37500
3276
.38000
3277
.38500
3278
.39000
3279
.39500
3280
.40000
3281
.40500
3282
.41000
3283
.41500
3284
.42000
3285
.42500
3286
.43000
3287
.43500
3288
.44000
3289
.44500
3290
.45000
3291
.45500
3292
.46000
3293
.46500
3294
.47000
3295
.47500
3296
.48000
3297
.48500
3298
.49000
3299
.49500
Chan.
Num.
Freq.
(MHz)
3300 166.50000
3301
.50500
3302
.51000
3303
.51500
3304
.52000
3305
.52500
3306
.53000
3307
.53500
3308
.54000
3309
.54500
3310
.55000
3311
.55500
3312
.56000
3313
.56500
3314
.57000
3315
.57500
3316
.58000
3317
.58500
3318
.59000
3319
.59500
3320
.60000
3321
.60500
3322
.61000
3323
.61500
3324
.62000
3325
.62500
3326
.63000
3327
.6 3500
3328
.64000
3329
.64500
3330
.65000
3331
.65500
3332
.66000
3333
.66500
3334
.67000
3335
.67500
3336
.68000
3337
.68500
3338
.69000
3339
.69500
3340
.70000
3341
.70500
3342
.71000
3343
.71500
3344
.72000
3345
.72500
3346
.73000
3347
.73500
3348
.74000
3349
.74500
3350 166.75000
3351
.75500
3352
.76000
3353
.76500
3354
.77000
3355
.77500
3356
.78000
3357
.78500
3358
.79000
3359
.79500
3360
.80000
3361
.80500
3362
.81000
3363
.81500
3364
.82000
3365
.82500
3366
.83000
3367
.83500
3368
.84000
3369
.84500
3370
.85000
3371
.85500
3372
.86000
3373
.86500
3374
.87000
Chan.
Num.
Freq.
(MHz)
3375 166.87500
3376
.88000
3377
.88500
3378
.89000
3379
.89500
3380
.90000
3381
.90500
3382
.91000
3383
.91500
3384
.92000
3385
.92500
3386
.93000
3387
.93500
3388
.94000
3389
.94500
3390
.95000
3391
.95500
3392
.96000
3393
.96500
3394
.97000
3395
.97500
3396
.98000
3397
.98500
3398
.99000
3399
.99500
3400 167.00000
3401
.00500
3402
.01000
3403
.01500
3404
.02000
3405
.02500
3406
.03000
3407
.03500
3408
.04000
3409
.04500
3410
.05000
3411
.0 5500
3412
.06000
3413
.06500
3414
.07000
3415
.07500
3416
.08000
3417
.08500
3418
.09000
3419
.09500
3420
.10000
3421
.10500
3422
.11000
3423
.11500
3424
.12000
3425
.12500
3426
.13000
3427
.13500
3428
.14000
3429
.14500
3430
.15000
3431
.15500
3432
.16000
3433
.16500
3434
.17000
3435
.17500
3436
.18000
3437
.18500
3438
.19000
3439
.19500
3440
.20000
3441
.20500
3442
.21000
3443
.21500
3444
.22000
3445
.22500
3446
.23000
3447
.23500
3448
.24000
3449
.24500
Chan.
Num.
Freq.
(MHz)
3450 167.25000
3451
.25500
3452
.26000
3453
.26500
3454
.27000
3455
.27500
3456
.28000
3457
.28500
3458
.29000
3459
.29500
3460
.30000
3461
.30500
3462
.31000
3463
.31500
3464
.32000
3465
.32500
3466
.33000
3467
.33500
3468
.34000
3469
.34500
3470
.35000
3471
.35500
3472
.36000
3473
.36500
3474
.37000
3475
.37500
3476
.38000
3477
.38500
3478
.39000
3479
.39500
3480
.40000
3481
.40500
3482
.41000
3483
.41500
3484
.42000
3485
.42500
3486
.43000
3487
.43500
3488
.44000
3489
.44500
3490
.45000
3491
.45500
3492
.46000
3493
.46500
3494
.47000
3495
.4 7500
3496
.48000
3497
.48500
3498
.49000
3499
.49500
3500 167.50000
3501
.50500
3502
.51000
3503
.51500
3504
.5 2000
3505
.52500
3506
.53000
3507
.53500
3508
.54000
3509
.54500
3510
.55000
3511
.55500
3512
.56000
3513
.56500
3514
.57000
3515
.57500
3516
.58000
3517
.58500
3518
.59000
3519
.59500
3520
.60000
3521
.60500
3522
.61000
3523
.61500
3524
.62000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
3525 167.62500
3526
.63000
3527
.63500
3528
.64000
3529
.64500
3530
.65000
3531
.65500
3532
.66000
3533
.66500
3534
.67000
3535
.67500
3536
.68000
3537
.68500
3538
.69000
3539
.69500
3540
.70000
3541
.70500
3542
.71000
3543
.71500
3544
.72000
3545
.72500
3546
.73000
3547
.73500
3548
.74000
3549
.74500
3550 167.75000
3551
.75500
3552
.76000
3553
.76500
3554
.77000
3555
.77500
3556
.78000
3557
.78500
3558
.79000
3559
.79500
3560
.80000
3561
.80500
3562
.81000
3563
.81500
3564
.82000
3565
.82500
3566
.83000
3567
.83500
3568
.84000
3569
.84500
3570
.85000
3571
.85500
3572
.86000
3573
.86500
3574
.87000
3575
.87500
3576
.88000
3577
.88500
3578
.89000
3579
.89500
3580
.90000
3581
.90500
3582
.91000
3583
.91500
3584
.92000
3585
.92500
3586
.93000
3587
.93500
3588
.9 4000
3589
.94500
3590
.95000
3591
.95500
3592
.96000
3593
.96500
3594
.97000
3595
.97500
3596
.98000
3597
.98500
3598
.99000
3599
.99500
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
168.00000
.00500
.01000
.01500
.02000
.02500
.03000
.03500
.04000
.04500
.05000
.05500
.06000
.06500
.07000
.07500
.08000
.08500
.09000
.09500
.10000
.10500
.11000
.11500
.12000
.12500
.13000
.13500
.14000
.14500
.15000
.15500
.16000
.16500
.17000
.17500
.18000
.18500
.19000
.19500
.20000
.20500
.21000
.21500
.22000
.22500
.23000
.23500
.24000
.24500
168.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.3 6000
.36500
.37000
3-7
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
3675 168.37500
3676
.38000
3677
.38500
3678
.39000
3679
.39500
3680
.40000
3681
.40500
3682
.41000
3683
.41500
3684
.42000
3685
.42500
3686
.43000
3687
.43500
3688
.44000
3689
.44500
3690
.45000
3691
.45500
3692
.46000
3693
.46500
3694
.47000
3695
.47500
3696
.48000
3697
.48500
3698
.49000
3699
.49500
3700 168.50000
3701
.50500
3702
.51000
3703
.51500
3704
.52000
3705
.52500
3706
.53000
3707
.53500
3708
.54000
3709
.54500
3710
.55000
3711
.55500
3712
.56000
3713
.56500
3714
.57000
3715
.57500
3716
.58000
3717
.58500
3718
.59000
3719
.59500
3720
.60000
3721
.60500
3722
.61000
3723
.61500
3724
.62000
3725
.62500
3726
.63000
3727
.63500
3728
.64000
3729
.64500
3730
.65000
3731
.65500
3732
.66000
3733
.66500
3734
.67000
3735
.67500
3736
.68000
3737
.68500
3738
.69000
3739
.69500
3740
.70000
3741
.70500
3742
.71000
3743
.71500
3744
.72000
3745
.72500
3746
.73000
3747
.73500
3748
.74000
3749
.74500
3-8
Chan.
Num.
Freq.
(MHz)
3750 168.75000
3751
.75500
3752
.76000
3753
.76500
3754
.77000
3755
.77500
3756
.78000
3757
.78500
3758
.79000
3759
.79500
3760
.80000
3761
.80500
3762
.81000
3763
.81500
3764
.82000
3765
.82500
3766
.83000
3767
.83500
3768
.84000
3769
.84500
3770
.85000
3771
.85500
37 72
.86000
3773
.86500
3774
.87000
3775
.87500
3776
.88000
3777
.88500
3778
.89000
3779
.89500
3780
.90000
37 81
.90500
3782
.91000
3783
.91500
3784
.92000
3785
.92500
3786
.93000
3787
.93500
3788
.94000
3789
.94500
3790
.95000
3791
.95500
3792
.96000
3793
.96500
3794
.97000
3795
.97500
3796
.98000
3797
.98500
3798
.99000
3799
.99500
3800 169.00000
3801
.00500
3802
.01000
3803
.01500
3804
.02000
3805
.02500
3806
.03000
3807
.03500
3808
.04000
3809
.04500
3810
.05000
3811
.05500
3812
.06000
3813
.06500
3814
.07000
3815
.07500
3816
.08000
3817
.08500
3818
.09000
3819
.09500
3820
.10000
3821
.10500
3822
.11000
3823
.11500
3824
.12000
Chan.
Num.
Freq.
(MHz)
3825 169.12500
3826
.13000
3827
.13500
3828
.14000
3829
.14500
3830
.15000
3831
.15500
3832
.16000
3833
.16500
3834
.17000
3835
.17500
3836
.18000
3837
.18500
3838
.19000
3839
.19500
3840
.20000
3841
.20500
3842
.21000
3843
.21500
3844
.22000
3845
.22500
3846
.23000
3847
.23500
3848
.24000
3849
.24500
3850 169.25000
3851
.25500
3852
.26000
3853
.26500
3854
.27000
3855
.27500
3856
.28000
3857
.28500
3858
.29000
3859
.29500
3860
.30000
3861
.30500
3862
.31000
3863
.31500
3864
.32000
38 65
.32500
3866
.33000
3867
.33500
3868
.34000
3869
.34500
3870
.35000
3871
.35500
3872
.36000
3873
.36500
3874
.37000
3875
.37500
3876
.38000
3877
.38500
3878
.39000
3879
.39500
3880
.40000
3881
.40500
3882
.41000
3883
.41500
3884
.42000
3885
.42500
3886
.43000
3887
.43500
3888
.44000
3889
.44500
3890
.45000
3891
.45500
3892
.46000
3893
.46500
3894
.47000
3895
.47500
3896
.48000
3897
.48500
3898
.49000
3899
.49500
Chan.
Num.
Freq.
(MHz)
3900 169.50000
3901
.50500
3902
.51000
3903
.51500
3904
.52000
3905
.52500
3906
.53000
3907
.53500
3908
.54000
3909
.54500
3910
.55000
3911
.55500
3912
.56000
3913
.56500
3914
.57000
3915
.57500
3916
.58000
3917
.58500
3918
.59000
3919
.59500
3920
.60000
3921
.60500
3922
.61000
3923
.61500
3924
.62000
3925
.62500
3926
.63000
3927
.63500
3928
.64000
3929
.64500
3930
.65000
3931
.65500
3932
.66000
3933
.66500
3934
.67000
3935
.67500
3936
.68000
3937
.68500
3938
.69000
3939
.69500
3940
.70000
3941
.70500
3942
.71000
3943
.71500
3944
.72000
3945
.72500
3946
.73000
3947
.73500
3948
.74000
39 49
.74500
3950 169.75000
3951
.75500
3952
.76000
3953
.76500
3954
.77000
3955
.77500
3956
.78000
3957
.78500
3958
.79000
3959
.79500
3960
.80000
3961
.80500
3962
.81000
3963
.81500
3964
.82000
3965
.82500
3966
.83000
3967
.83500
3968
.84000
3969
.84500
3970
.85000
3971
.85500
3972
.86000
3973
.86500
3974
.87000
Chan.
Num.
Freq.
(MHz)
3975 169.87500
3976
.88000
3977
.88500
3978
.89000
3979
.89500
3980
.90000
3981
.90500
3982
.91000
3983
.91500
3984
.92000
3985
.92500
3986
.93000
3987
.93500
3988
.94000
3989
.94500
3990
.95000
3991
.95500
3992
.96000
3993
.96500
3994
.97000
3995
.97500
3996
.98000
3997
.98500
3998
.99000
3999
.99500
4000 170.00000
4001
.00500
4002
.01000
4003
.01500
4004
.02000
4005
.02500
4006
.03000
4007
.03500
4008
.04000
4009
.04500
4010
.05000
4011
.05500
4012
.06000
4013
.06500
4014
.07000
4015
.07500
4016
.08000
4017
.08500
4018
.09000
4019
.09500
4020
.10000
4021
.10500
4022
.11000
4023
.11500
4024
.12000
4025
.12500
4026
.13000
4027
.13500
4028
.14000
4029
.14500
4030
.15000
4031
.15500
4032
.16000
4033
.16500
4034
.17000
4035
.17500
4036
.18000
4037
.18500
4038
.19000
4039
.19500
4040
.20000
4041
.20500
4042
.21000
4043
.21500
4044
.22000
4045
.22500
4046
.23000
4047
.23500
4048
.24000
4049
.24500
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
4050 170.25000
4051
.25500
4052
.26000
4053
.26500
4054
.27000
4055
.27500
4056
.28000
4057
.28500
4058
.29000
4059
.29500
4060
.30000
4061
.30500
4062
.31000
4063
.31500
4064
.32000
4065
.32500
4066
.33000
4067
.33500
4068
.34000
4069
.34500
4070
.35000
4071
.35500
4072
.36000
4073
.36500
4074
.37000
4075
.37500
4076
.38000
4077
.38500
4078
.39000
4079
.39500
4080
.40000
4081
.40500
4082
.41000
4083
.41500
4084
.42000
4085
.42500
4086
.43000
4087
.43500
4088
.44000
4089
.44500
4090
.45000
4091
.45500
4092
.46000
4093
.46500
4094
.47000
4095
.47500
4096
.48000
4097
.48500
4098
.49000
4099
.49500
4100 170.50000
4101
.50500
4102
.51000
4103
.51500
4104
.52000
4105
.52500
4106
.53000
4107
.53500
4108
.54000
4109
.54500
4110
.55000
4111
.55500
4112
.56000
4113
.56500
4114
.57000
4115
.57500
4116
.58000
4117
.58500
4118
.59000
4119
.59500
4120
.60000
4121
.60500
4122
.61000
4123
.61500
4124
.62000
4125
4126
4127
41 28
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
170.62500
.63000
.63500
.64000
.64500
.65000
.65500
.66000
.66500
.67000
.67500
.68000
.68500
.69000
.69500
.70000
.70500
.71000
.71500
.72000
.72500
.73000
.73500
.74000
.74500
170.75000
.75500
.76000
.76500
.77000
.77500
.78000
.78500
.79000
.79500
.80000
.80500
.81000
.81500
.82000
.82500
.83000
.83500
.84000
.84500
.85000
.85500
.86000
.86500
.87000
.87500
.88000
.88500
.89000
.89500
.90000
.90500
.91000
.91500
.92000
.92500
.93000
.93500
.94000
.94500
.95000
.95500
.96000
.96500
.97000
.97500
.98000
.98500
.99000
.99500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
4200 171.00000
4201
.00500
4202
.01000
4203
.01500
4204
.02000
4205
.02500
4206
.03000
4207
.03500
4208
.04000
4209
.04500
4210
.05000
4211
.05500
4212
.06000
4213
.06500
4214
.07000
4215
.07500
4216
.08000
4217
.08500
4218
.09000
4219
.09500
4220
.10000
4221
.10500
4222
.11000
4223
.11500
4224
.12000
4225
.12500
4226
.13000
4227
.13500
4228
.14000
4229
.14500
4230
.15000
4231
.15500
4232
.16000
4233
.16500
4234
.17000
4235
.17500
4236
.18000
4237
.18500
4238
.1 9000
4239
.19500
4240
.20000
4241
.20500
4242
.21000
4243
.21500
4244
.22000
4245
.22500
4246
.23000
4247
.23500
4248
.24000
4249
.24500
4250 171.25000
4251
.25500
4252
.26000
4253
.26500
4254
.27000
4255
.27500
4256
.28000
4257
.28500
4258
.29000
4259
.29500
4260
.30000
4261
.30500
4262
.31000
4263
.31500
4264
.32000
4265
.32500
4266
.33000
4267
.33500
4268
.34000
4269
.34500
4270
.35000
4271
.35500
4272
.36000
4273
.36500
4274
.37000
Chan.
Num.
Freq.
(MHz)
4275 171.37500
4276
.38000
4277
.38500
4278
.39000
4279
.39500
4280
.40000
4281
.40500
4282
.41000
4283
.41500
4284
.42000
4285
.42500
4286
.43000
4287
.43500
4288
.44000
4289
.44500
4290
.45000
4291
.45500
4292
.46000
4293
.46500
4294
.47000
4295
.47500
4296
.48000
4297
.48500
4298
.49000
4299
.49500
4300 171.50000
4301
.50500
4302
.51000
4303
.51500
4304
.52000
4305
.52500
4306
.53000
4307
.53500
4308
.54000
4309
.54500
4310
.55000
4311
.55500
4312
.56000
4313
.56500
4314
.57000
4315
.57500
4316
.58000
4317
.58500
4318
.59000
4319
.59500
4320
.60000
4321
.60500
4322
.6 1000
4323
.61500
4324
.62000
4325
.62500
4326
.63000
4327
.63500
4328
.64000
4329
.64500
4330
.65000
4331
.6 5500
4332
.66000
4333
.66500
4334
.67000
4335
.67500
4336
.68000
4337
.68500
4338
.69000
4339
.69500
4340
.70000
4341
.70500
4342
.71000
4343
.71500
4344
.72000
4345
.72500
4346
.73000
4347
.73500
4348
.74000
4349
.74500
Chan.
Num.
Freq.
(MHz)
4350 171.75000
4351
.75500
4352
.76000
4353
.76500
4354
.77000
4355
.77500
4356
.78000
4357
.78500
4358
.79000
4359
.79500
4360
.80000
4361
.80500
4362
.81000
4363
.81500
4364
.82000
4365
.82500
4366
.83000
4367
.83500
4368
.84000
4369
.84500
4370
.85000
4371
.85500
4372
.86000
4373
.86500
4374
.87000
4375
.87500
4376
.88000
4377
.88500
4378
.89000
4379
.89500
4380
.90000
4381
.90500
4382
.91000
4383
.91500
4384
.92000
4385
.92500
4386
.93000
4387
.93500
4388
.94000
4389
.94500
4390
.95000
4391
.95500
4392
.96000
4393
.96500
4394
.97000
4395
.97500
4396
.98000
4397
.98500
4398
.99000
4399
.99500
4400 172.00000
4401
.00500
4402
.01000
4403
.01500
4404
.02000
4405
.02500
4406
.03000
4407
.03500
4408
.04000
4409
.04500
4410
.05000
4411
.05500
4412
.06000
4413
.06500
4414
.07000
4415
.0 7500
4416
.08000
4417
.08500
4418
.09000
4419
.09500
4420
.10000
4421
.10500
4422
.11000
4423
.11500
4424
.12000
Chan.
Num.
Freq.
(MHz)
4425 172.12500
4426
.13000
4427
.13500
4428
.14000
4429
.14500
4430
.15000
4431
.15500
4432
.16000
4433
.16500
4434
.17000
4435
.17500
4436
.18000
4437
.18500
4438
.19000
4439
.19500
4440
.20000
4441
.20500
4442
.21000
4443
.21500
4444
.22000
4445
.22500
4446
.23000
4447
.23500
4448
.24000
4449
.24500
4450 172.25000
4451
.25500
4452
.26000
4453
.26500
4454
.27000
4455
.27500
4456
.28000
4457
.28500
4458
.29000
4459
.29500
4460
.30000
4461
.30500
4462
.31000
4463
.31500
4464
.32000
4465
.32500
4466
.33000
4467
.33500
4468
.34000
4469
.34500
4470
.35000
4471
.35500
4472
.36000
4473
.36500
4474
.37000
4475
.37500
4476
.38000
4477
.38500
4478
.39000
4479
.39500
4480
.40000
4481
.40500
4482
.41000
4483
.41500
4484
.42000
4485
.42500
4486
.43000
4487
.43500
4488
.44000
4489
.44500
4490
.45000
4491
.45500
4492
.46000
4493
.46500
4494
.47000
4495
.47500
4496
.48000
4497
.48500
4498
.49000
4499
.4 9500
Chan.
Num.
Freq.
(MHz)
4500 172.50000
4501
.50500
4502
.51000
4503
.51500
4504
.52000
4505
.52500
4506
.53000
4507
.53500
4508
.54000
4509
.54500
4510
.55000
4511
.55500
4512
.56000
4513
.56500
4514
.57000
4515
.57500
4516
.58000
4517
.58500
4518
.59000
4519
.59500
4520
.60000
4521
.60500
4522
.61000
4523
.61500
4524
.62000
4525
.62500
4526
.63000
4527
.63500
4528
.64000
4529
.64500
4530
.65000
4531
.65500
4532
.66000
4533
.66500
4534
.67000
4535
.67500
4536
.68000
4537
.68500
4538
.69000
4539
.69500
4540
.70000
4541
.70500
4542
.71000
4543
.71500
4544
.72000
4545
.72500
4546
.73000
4547
.73500
4548
.74000
4549
.74500
4550 172.75000
4551
.75500
4552
.76000
4553
.76500
4554
.77000
4555
.77500
4556
.78000
4557
.78500
4558
.79000
4559
.79500
4560
.80000
4561
.80500
4562
.81000
4563
.81500
4564
.82000
4565
.82500
4566
.83000
4567
.83500
4568
.84000
4569
.84500
4570
.85000
4571
.85500
4572
.86000
4573
.86500
4574
.87000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Cha n.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
4575 172.87500
4576
.88000
4577
.88500
4578
.89000
4579
.89500
4580
.90000
4581
.90500
4582
.91000
4583
.91500
4584
.92000
4585
.92500
4586
.93000
4587
.93500
4588
.94000
4589
.94500
4590
.95000
4591
.95500
4592
.96000
4593
.96500
4594
.97000
4595
.97500
4596
.98000
4597
.98500
4598
.99000
4599
.99500
4600 173.00000
4601
.00500
4602
.01000
4603
.01500
4604
.02000
4605
.02500
4606
.03000
4607
.03500
4608
.04000
4609
.04500
4610
.05000
4611
.05500
4612
.06000
4613
.06500
4614
.07000
4615
.07500
4616
.08000
4617
.08500
4618
.09000
4619
.09500
4620
.10000
4621
.10500
4622
.11000
4623
.11500
4624
.12000
4625
.12500
4626
.13000
4627
.13500
4628
.14000
4629
.14500
4630
.15000
4631
.15500
4632
.16000
4633
.16500
4634
.17000
4635
.17500
4636
.18000
4637
.18500
4638
.19000
4639
.19500
4640
.20000
4641
.20500
4642
.21000
4643
.21500
4644
.22000
4645
.22500
4646
.23000
4647
.23500
4648
.24000
4649
.24500
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
173.25000
.25500
.26000
.26500
.27000
.27500
.28000
.28500
.29000
.29500
.30000
.30500
.31000
.31500
.32000
.32500
.33000
.33500
.34000
.34500
.35000
.35500
.36000
.36500
.37000
.37500
.38000
.38500
.3 9000
.39500
.40000
.40500
.41000
.41500
.42000
.42500
.43000
.43500
.44000
.44500
.45000
.45500
.46000
.46500
.47000
.47500
.48000
.48500
.49000
.49500
173.50000
.50500
.51000
.51500
.52000
.52500
.53000
.53500
.54000
.54500
.55000
.55500
.56000
.56500
.57000
.57500
.58000
.58500
.59000
.59500
.60000
.60500
.61000
.61500
.62000
3-9
VT-3/160 Channel Designation Table: 150 to 174 MHz, 5 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
4725 173.62500
4726
.63000
4727
.63500
4728
.64000
4729
.64500
4730
.65000
4731
.65500
4732
.66000
4733
.66500
4734
.67000
4735
.67500
4736
.68000
4737
.68500
4738
.69000
4739
.69500
4740
.70000
4741
.70500
4742
.71000
4743
.71500
4744
.72000
4745
.72500
4746
.73000
4747
.73500
4748
.74000
4749
.74500
4750 173.75000
4751
.75500
4752
.76000
4753
.76500
4754
.77000
4755
.77500
4756
.78000
4757
.78500
4758
.79000
4759
.79500
4760
.80000
4761
.80500
4762
.81000
4763
.81500
4764
.82000
4765
.82500
4766
.83000
4767
.83500
4768
.84000
4769
.84500
4770
.85000
4771
.85500
4772
.86000
4773
.86500
4774
.87000
4775
.87500
4776
.88000
4777
.88500
4778
.89000
4779
.89500
4780
.90000
4781
.90500
4782
.91000
4783
.91500
4784
.92000
4785
.92500
4786
.93000
4787
.93500
4788
.94000
4789
.94500
4790
.95000
4791
.95500
4792
.96000
4793
.96500
4794
.97000
4795
.97500
4796
.98000
4797
.98500
4798
.99000
4799
.99500
3-10
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
4800 174.00000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
4
Chan.
Num.
VT-3/160 Channel Designation Table: 150-174MHz, 6.25kHz Increments
Freq.
(MHz)
5000 150.00000
5001
.00625
5002
.01250
5003
.01875
5004
.02500
5005
.03125
5006
.03750
5007
.04375
5008
.05000
5009
.05625
5010
.06250
5011
.06875
5012
.07500
5013
.08125
5014
.08750
5015
.09375
5016
.10000
5017
.10625
5018
.11250
5019
.11875
5020
.12500
5021
.13125
5022
.13750
5023
.14375
5024
.15000
5025
.15625
5026
.16250
5027
.16875
5028
.17500
5029
.18125
5030
.18750
5031
.19375
5032
.20000
5033
.20625
5034
.21250
5035
.21875
5036
.22500
5037
.23125
5038
.23750
5039
.24375
5040 150.25000
5041
.25625
5042
.26250
5043
.26875
5044
.27500
5045
.28125
5046
.28750
5047
.29375
5048
.30000
5049
.30625
5050
.31250
5051
.31875
5052
.32500
5053
.33125
5054
.33750
5055
.34375
5056
.35000
5057
.35625
5058
.36250
5059
.36875
5060
.37500
5061
.38125
5062
.38750
5063
.39375
5064
.40000
5065
.40625
5066
.41250
5067
.41875
5068
.42500
5069
.43125
5070
.43750
5071
.44375
5072
.45000
5073
.45625
5074
.46250
Chan.
Num.
Freq.
(MHz)
5075 150.46875
5076
.47500
5077
.48125
5078
.48750
5079
.49375
5080 150.50000
5081
.50625
5082
.51250
5083
.51875
5084
.52500
5085
.53125
5086
.53750
5087
.54375
5088
.55000
5089
.55625
5090
.56250
5091
.56875
5092
.57500
5093
.58125
5094
.58750
5095
.59375
5096
.60000
5097
.60625
5098
.61250
5099
.61875
5100
.62500
5101
.63125
5102
.63750
5103
.64375
5104
.65000
5105
.65625
5106
.66250
5107
.66875
5108
.67500
5109
.68125
5110
.68750
5111
.69375
5112
.70000
5113
.70625
5114
.71250
5115
.71875
5116
.72500
5117
.73125
5118
.73750
5119
.74375
5120 150.75000
5121
.75625
5122
.76250
5123
.76875
5124
.77500
5125
.78125
5126
.78750
5127
.79375
5128
.80000
5129
.80625
5130
.81250
5131
.81875
5132
.82500
5133
.83125
5134
.83750
5135
.84375
5136
.85000
5137
.85625
5138
.86250
5139
.86875
5140
.87500
5141
.88125
5142
.88750
5143
.89375
5144
.90000
5145
.90625
5146
.91250
5147
.91875
5148
.92500
5149
.93125
Chan.
Num.
Freq.
(MHz)
5150 150.93750
5151
.94375
5152
.95000
5153
.95625
5154
.96250
5155
.96875
5156
.97500
5157
.98125
5158
.98750
5159
.99375
5160 151.00000
5161
.00625
5162
.01250
5163
.01875
5164
.02500
5165
.03125
5166
.03750
5167
.04375
5168
.05000
5169
.05625
5170
.06250
5171
.06875
5172
.07500
5173
.08125
5174
.08750
5175
.09375
5176
.10000
5177
.10625
5178
.11250
5179
.11875
5180
.12500
5181
.13125
5182
.13750
5183
.14375
5184
.15000
5185
.15625
5186
.16250
5187
.16875
5188
.17500
5189
.18125
5190
.18750
5191
.19375
5192
.20000
5193
.20625
5194
.21250
5195
.2 1875
5196
.22500
5197
.23125
5198
.23750
5199
.24375
5200 151.25000
5201
.25625
5202
.26250
5203
.26875
5204
.27500
5205
.28125
5206
.28750
5207
.29375
5208
.30000
5209
.30625
5210
.31250
5211
.31875
5212
.32500
5213
.33125
5214
.33750
5215
.34375
5216
.35000
5217
.35625
5218
.36250
5219
.36875
5220
.37500
5221
.38125
5222
.38750
5223
.39375
5224
.40000
Chan.
Num.
Freq.
(MHz)
5225 151.40625
5226
.41250
5227
.41875
5228
.42500
5229
.43125
5230
.43750
5231
.44375
5232
.45000
5233
.45625
5234
.46250
5235
.46875
5236
.47500
5237
.48125
5238
.48750
5239
.49375
5240 151.50000
5241
.50625
5242
.51250
5243
.51875
5244
.52500
5245
.53125
5246
.53750
5247
.54375
5248
.55000
5249
.55625
5250
.56250
5251
.56875
5252
.57500
5253
.58125
5254
.58750
5255
.59375
5256
.60000
5257
.60625
5258
.61250
5259
.61875
5260
.62500
5261
.63125
5262
.63750
5263
.64375
5264
.65000
5265
.65625
5266
.66250
5267
.66875
5268
.67500
5269
.68125
5270
.68750
5271
.69375
5272
.70000
5273
.70625
5274
.71250
5275
.71875
5276
.72500
5277
.73125
5278
.73750
5279
.74375
5280 151.75000
5281
.75625
5282
.76250
5283
.76875
5284
.77500
5285
.78125
5286
.78750
5287
.79375
5288
.80000
5289
.80625
5290
.81250
5291
.81875
5292
.82500
5293
.83125
5294
.83750
5295
.84375
5296
.85000
5297
.85625
5298
.86250
5299
.86875
Chan.
Num.
Freq.
(MHz)
5300 151.87500
5301
.88125
5302
.88750
5303
.89375
5304
.90000
5305
.90625
5306
.91250
5307
.91875
5308
.92500
5309
.93125
5310
.93750
5311
.94375
5312
.95000
5313
.95625
5314
.96250
5315
.96875
5316
.97500
5317
.98125
5318
.98750
5319
.99375
5320 152.00000
5321
.00625
5322
.01250
5323
.01875
5324
.02500
5325
.03125
5326
.03750
5327
.04375
5328
.05000
5329
.05625
5330
.06250
5331
.06875
5332
.07500
5333
.08125
5334
.08750
5335
.09375
5336
.10000
5337
.10625
5338
.11250
5339
.11875
5340
.12500
5341
.13125
5342
.13750
5343
.14375
5344
.15000
5345
.15625
5346
.16250
5347
.16875
5348
.17500
5349
.18125
5350
.18750
5351
.19375
5352
.20000
5353
.20625
5354
.21250
5355
.21875
5356
.22500
5357
.23125
5358
.23750
5359
.24375
5360 152.25000
5361
.25625
5362
.26250
5363
.26875
5364
.27500
5365
.28125
5366
.28750
5367
.29375
5368
.30000
5369
.30625
5370
.31250
5371
.31875
5372
.32500
5373
.33125
5374
.33750
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
5375 152.34375
5376
.35000
5377
.35625
5378
.36250
5379
.36875
5380
.37500
5381
.38125
5382
.38750
5383
.39375
5384
.40000
5385
.40625
5386
.41250
5387
.41875
5388
.42500
5389
.43125
5390
.43750
5391
.44375
5392
.45000
5393
.45625
5394
.46250
5395
.46875
5396
.47500
5397
.48125
5398
.48750
5399
.49375
5400 152.50000
5401
.50625
5402
.51250
5403
.51875
5404
.52500
5405
.53125
5406
.53750
5407
.54375
5408
.55000
5409
.55625
5410
.56250
5411
.56875
5412
.57500
5413
.58125
5414
.58750
5415
.59375
5416
.60000
5417
.60625
5418
.61250
5419
.61875
5420
.62500
5421
.63125
5422
.63750
5423
.64375
5424
.65000
5425
.65625
5426
.66250
5427
.66875
5428
.67500
5429
.68125
5430
.68750
5431
.69375
5432
.70000
5433
.70625
5434
.71250
5435
.71875
5436
.72500
5437
.73125
5438
.73750
5439
.74375
5440 152.75000
5441
.75625
5442
.76250
5443
.76875
5444
.77500
5445
.78125
5446
.78750
5447
.79375
5448
.80000
5449
.80625
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
152.81250
.81875
.82500
.83125
.83750
.84375
.85000
.85625
.86250
.86875
.87500
.88125
.88750
.89375
.90000
.90625
.91250
.91875
.92500
.93125
.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
153.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
153.25000
.25625
.26250
.26875
.27500
4-1
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
5525 153.28125
5526
.28750
5527
.29375
5528
.30000
5529
.30625
5530
.31250
5531
.31875
5532
.32500
5533
.33125
5534
.33750
5535
.34375
5536
.35000
5537
.35625
5538
.36250
5539
.36875
5540
.37500
5541
.38125
5542
.38750
5543
.39375
5544
.40000
5545
.40625
5546
.41250
5547
.41875
5548
.42500
5549
.43125
5550
.43750
5551
.44375
5552
.45000
5553
.45625
5554
.46250
5555
.46875
5556
.47500
5557
.48125
5558
.48750
5559
.49375
5560 153.50000
5561
.50625
5562
.51250
5563
.51875
5564
.52500
5565
.53125
5566
.53750
5567
.54375
5568
.55000
5569
.55625
5570
.56250
5571
.56875
5572
.57500
5573
.58125
5574
.58750
5575
.59375
5576
.60000
5577
.60625
5578
.61250
5579
.61875
5580
.62500
5581
.63125
5582
.63750
5583
.64375
5584
.65000
5585
.65625
5586
.66250
5587
.66875
5588
.67500
5589
.6 8125
5590
.68750
5591
.69375
5592
.70000
5593
.70625
5594
.71250
5595
.71875
5596
.72500
5597
.73125
5598
.73750
5599
.74375
4-2
Chan.
Num.
Freq.
(MHz)
5600 153.75000
5601
.75625
5602
.76250
5603
.76875
5604
.77500
5605
.78125
5606
.78750
5607
.79375
5608
.80000
5609
.80625
5610
.81250
5611
.81875
5612
.82500
5613
.83125
5614
.83750
5615
.84375
5616
.85000
5617
.85625
5618
.86250
5619
.86875
5620
.87500
5621
.88125
5622
.88750
5623
.89375
5624
.90000
5625
.90625
5626
.91250
5627
.91875
5628
.92500
5629
.93125
5630
.93750
5631
.94375
5632
.95000
5633
.95625
5634
.96250
5635
.96875
5636
.97500
5637
.98125
5638
.98750
5639
.99375
5640 154.00000
5641
.00625
5642
.01250
5643
.01875
5644
.02500
5645
.03125
5646
.03750
5647
.04375
5648
.05000
5649
.05625
5650
.06250
5651
.06875
5652
.07500
5653
.08125
5654
.08750
5655
.09375
5656
.10000
5657
.10625
5658
.11250
5659
.11875
5660
.12500
5661
.13125
5662
.13750
5663
.14375
5664
.15000
5665
.15625
5666
.16250
5667
.16875
5668
.17500
5669
.18125
5670
.18750
5671
.19375
5672
.20000
5673
.20625
5674
.21250
Chan.
Num.
Freq.
(MHz)
5675 154.21875
5676
.22500
5677
.23125
5678
.23750
5679
.24375
5680 154.25000
5681
.25625
5682
.26250
5683
.26875
5684
.27500
5685
.28125
5686
.28750
5687
.29375
5688
.30000
5689
.30625
5690
.31250
5691
.31875
5692
.32500
5693
.33125
5694
.33750
5695
.34375
5696
.35000
5697
.35625
5698
.36250
5699
.36875
5700
.37500
5701
.38125
5702
.38750
5703
.39375
5704
.40000
5705
.40625
5706
.41250
5707
.41875
5708
.42500
5709
.43125
5710
.43750
5711
.44375
5712
.45000
5713
.45625
5714
.46250
5715
.46875
5716
.47500
5717
.48125
5718
.48750
5719
.49375
5720 154.50000
5721
.50625
5722
.51250
5723
.51875
5724
.52500
5725
.53125
5726
.53750
5727
.54375
5728
.55000
5729
.55625
5730
.56250
5731
.56875
5732
.57500
5733
.58125
5734
.58750
5735
.59375
5736
.60000
5737
.60625
5738
.61250
5739
.61875
5740
.62500
5741
.63125
5742
.63750
5743
.64375
5744
.65000
5745
.65625
5746
.66250
5747
.66875
5748
.67500
5749
.68125
Chan.
Num.
Freq.
(MHz)
5750 154.68750
5751
.69375
5752
.70000
5753
.70625
5754
.71250
5755
.71875
5756
.72500
5757
.73125
5758
.73750
5759
.74375
5760 154.75000
5761
.75625
5762
.76250
5763
.76875
5764
.77500
5765
.78125
5766
.78750
5767
.79375
5768
.80000
5769
.80625
5770
.81250
5771
.81875
5772
.82500
5773
.83125
5774
.83750
5775
.84375
5776
.85000
5777
.85625
5778
.86250
5779
.86875
5780
.87500
5781
.88125
5782
.88750
5783
.89375
5784
.90000
5785
.90625
5786
.91250
5787
.91875
5788
.92500
5789
.93125
5790
.93750
5791
.94375
5792
.95000
5793
.95625
5794
.96250
5795
.96875
5796
.97500
5797
.98125
5798
.98750
5799
.99375
5800 155.00000
5801
.00625
5802
.01250
5803
.01875
5804
.02500
5805
.03125
5806
.03750
5807
.04375
5808
.05000
5809
.05625
5810
.06250
5811
.06875
5812
.07500
5813
.08125
5814
.08750
5815
.09375
5816
.10000
5817
.10625
5818
.11250
5819
.11875
5820
.12500
5821
.13125
5822
.13750
5823
.14375
5824
.15000
Chan.
Num.
Freq.
(MHz)
5825 155.15625
5826
.16250
5827
.16875
5828
.17500
5829
.18125
5830
.18750
5831
.19375
5832
.20000
5833
.20625
5834
.21250
5835
.21875
5836
.22500
58 37
.23125
5838
.23750
5839
.24375
5840 155.25000
5841
.25625
5842
.26250
5843
.2 6875
5844
.27500
5845
.28125
5846
.28750
5847
.29375
5848
.30000
5849
.30625
5850
.31250
5851
.31875
5852
.32500
5853
.33125
5854
.33750
5855
.34375
5856
.35000
5857
.35625
5858
.36250
5859
.36875
5860
.37500
5861
.38125
5862
.38750
5863
.39375
5864
.40000
5865
.40625
5866
.41250
5867
.41875
5868
.42500
5869
.43125
5870
.43750
5871
.44375
5872
.45000
5873
.45625
5874
.46250
5875
.46875
5876
.47500
5877
.48125
5878
.48750
5879
.49375
5880 155.50000
5881
.50625
5882
.51250
5883
.51875
5884
.52500
5885
.53125
5886
.53750
5887
.54375
5888
.55000
5889
.55625
5890
.56250
5891
.56875
5892
.57500
5893
.58125
5894
.58750
5895
.59375
5896
.60000
5897
.60625
5898
.61250
5899
.61875
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
5900 155.62500
5901
.63125
5902
.63750
5903
.64375
5904
.65000
5905
.65625
5906
.66250
5907
.66875
5908
.67500
5909
.68125
5910
.68750
5911
.69375
5912
.70000
5913
.70625
5914
.71250
5915
.71875
5916
.72500
5917
.73125
5918
.73750
5919
.74375
5920 155.75000
5921
.75625
5922
.76250
5923
.76875
5924
.77500
5925
.78125
5926
.78750
5927
.79375
5928
.80000
5929
.80625
5930
.81250
5931
.81875
5932
.82500
5933
.83125
5934
.83750
5935
.84375
5936
.85000
5937
.85625
5938
.86250
5939
.86875
5940
.87500
5941
.88125
5942
.88750
5943
.89375
5944
.90000
5945
.90625
5946
.91250
5947
.91875
5948
.92500
5949
.93125
5950
.93750
5951
.94375
5952
.95000
5953
.95625
5954
.96250
5955
.96875
5956
.97500
5957
.98125
5958
.98750
5959
.99375
5960 156.00000
5961
.00625
5962
.01250
5963
.01875
5964
.02500
5965
.03125
5966
.03750
5967
.04375
5968
.05000
5969
.05625
5970
.06250
5971
.06875
5972
.07500
5973
.08125
5974
.08750
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
60 14
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
156.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
156.25000
.25625
.26250
.26875
.27500
.28125
.28750
.29375
.30000
.30625
.31250
.31875
.32500
.33125
.33750
.34375
.35000
.35625
.36250
.36875
.37500
.38125
.38750
.39375
.40000
.40625
.41250
.41875
.42500
.43125
.43750
.44375
.45000
.45625
.46250
.46875
.47500
.48125
.48750
.49375
156.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
6050 156.56250
6051
.56875
6052
.57500
6053
.58125
6054
.58750
6055
.59375
6056
.60000
6057
.60625
6058
.61250
6059
.61875
6060
.62500
6061
.63125
6062
.63750
6063
.64375
6064
.65000
6065
.65625
6066
.66250
6067
.66875
6068
.67500
6069
.68125
6070
.68750
6071
.69375
6072
.70000
6073
.70625
6074
.71250
6075
.71875
6076
.72500
6077
.73125
6078
.73750
6079
.74375
6080 156.75000
6081
.75625
6082
.76250
6083
.76875
6084
.77500
6085
.78125
6086
.78750
6087
.79375
6088
.80000
6089
.80625
6090
.81250
6091
.81875
6092
.82500
6093
.83125
6094
.83750
6095
.84375
6096
.85000
6097
.85625
6098
.86250
6099
.86875
6100
.87500
6101
.88125
6102
.88750
6103
.89375
6104
.90000
6105
.90625
6106
.91250
6107
.91875
6108
.92500
6109
.93125
6110
.93750
6111
.94375
6112
.95000
6113
.95625
6114
.96250
6115
.96875
6116
.97500
6117
.98125
6118
.98750
6119
.99375
6120 157.00000
6121
.00625
6122
.01250
6123
.01875
6124
.02500
Cha n.
Num.
Freq.
(MHz)
6125 157.03125
6126
.03750
6127
.04375
6128
.05000
6129
.05625
6130
.06250
6131
.06875
6132
.07500
6133
.08125
6134
.08750
6135
.09375
6136
.10000
6137
.10625
61 38
.11250
6139
.11875
6140
.12500
6141
.13125
6142
.13750
6143
.14375
6144
.1 5000
6145
.15625
6146
.16250
6147
.16875
6148
.17500
6149
.18125
6150
.18750
6151
.19375
6152
.20000
6153
.20625
6154
.21250
6155
.21875
6156
.22500
6157
.23125
6158
.23750
6159
.24375
6160 157.25000
6161
.25625
6162
.26250
6163
.26875
6164
.27500
6165
.28125
6166
.28750
6167
.29375
6168
.30000
6169
.30625
6170
.31250
6171
.31875
6172
.32500
6173
.33125
6174
.33750
6175
.34375
6176
.35000
6177
.35625
6178
.36250
6179
.36875
6180
.37500
6181
.38125
6182
.38750
6183
.39375
6184
.40000
6185
.40625
6186
.41250
6187
.41875
6188
.42500
6189
.43125
6190
.43750
6191
.44375
6192
.45000
6193
.45625
6194
.46250
6195
.46875
6196
.47500
6197
.48125
6198
.48750
6199
.49375
Chan.
Num.
Freq.
(MHz)
6200 157.50000
6201
.50625
6202
.51250
6203
.51875
6204
.52500
6205
.53125
6206
.53750
6207
.54375
6208
.55000
6209
.55625
6210
.56250
6211
.56875
6212
.57500
6213
.58125
6214
.58750
6215
.59375
6216
.60000
6217
.60625
6218
.61250
6219
.61875
6220
.62500
6221
.63125
6222
.63750
6223
.64375
6224
.65000
6225
.65625
6226
.66250
6227
.66875
6228
.67500
6229
.68125
6230
.68750
6231
.69375
6232
.70000
6233
.70625
6234
.71250
6235
.71875
6236
.72500
6237
.73125
6238
.73750
6239
.74375
6240 157.75000
6241
.75625
6242
.76250
6243
.76875
6244
.77500
6245
.78125
6246
.78750
6247
.79375
6248
.80000
6249
.80625
6250
.81250
6251
.81875
6252
.82500
6253
.83125
6254
.83750
6255
.84375
6256
.85000
6257
.85625
6258
.86250
6259
.86875
6260
.87500
6261
.88125
6262
.88750
6263
.89375
6264
.90000
6265
.90625
6266
.91250
6267
.91875
6268
.92500
6269
.93125
6270
.93750
6271
.94375
6272
.95000
6273
.95625
6274
.96250
Chan.
Num.
Freq.
(MHz)
6275 157.96875
6276
.97500
6277
.98125
6278
.98750
6279
.99375
6280 158.00000
6281
.00625
6282
.01250
6283
.01875
6284
.02500
6285
.03125
6286
.03750
6287
.04375
6288
.05000
6289
.05625
6290
.06250
6291
.06875
6292
.07500
6293
.08125
6294
.08750
6295
.09375
6296
.10000
6297
.10625
6298
.11250
6299
.11875
6300
.12500
6301
.13125
6302
.13750
6303
.14375
6304
.15000
6305
.15625
6306
.16250
6307
.16875
6308
.17500
6309
.18125
6310
.18750
6311
.19375
6312
.20000
6313
.20625
6314
.21250
6315
.21875
6316
.22500
6317
.23125
6318
.23750
6319
.24375
6320 158.25000
6321
.25625
6322
.26250
6323
.26875
6324
.27500
6325
.28125
6326
.28750
6327
.29375
6328
.30000
6329
.30625
6330
.31250
6331
.31875
6332
.32500
6333
.33125
6334
.33750
6335
.34375
6336
.35000
6337
.35625
6338
.36250
6339
.36875
6340
.37500
6341
.38125
6342
.38750
6343
.39375
6344
.40000
6345
.40625
6346
.41250
6347
.41875
6348
.42500
6349
.43125
Chan.
Num.
Freq.
(MHz)
6350 158.43750
6351
.44375
6352
.45000
6353
.45625
6354
.46250
6355
.46875
6356
.47500
6357
.48125
6358
.48750
6359
.49375
6360 158.50000
6361
.50625
6362
.51250
6363
.51875
6364
.52500
6365
.53125
6366
.53750
6367
.54375
6368
.55000
6369
.55625
6370
.56250
6371
.56875
6372
.57500
6373
.58125
6374
.58750
6375
.59375
6376
.60000
6377
.60625
6378
.61250
6379
.61875
6380
.62500
6381
.63125
6382
.63750
6383
.64375
6384
.65000
6385
.65625
6386
.66250
6387
.66875
6388
.67500
6389
.68125
6390
.68750
6391
.69375
6392
.70000
6393
.70625
6394
.71250
6395
.71875
6396
.72500
6397
.73125
6398
.73750
6399
.74375
6400 158.75000
6401
.75625
6402
.76250
6403
.76875
6404
.77500
6405
.78125
6406
.78750
6407
.79375
64 08
.80000
6409
.80625
6410
.81250
6411
.81875
6412
.82500
6413
.83125
6414
.8 3750
6415
.84375
6416
.85000
6417
.85625
6418
.86250
6419
.86875
6420
.87500
6421
.88125
6422
.88750
6423
.89375
6424
.90000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
6425 158.90625
6426
.91250
6427
.91875
6428
.92500
6429
.93125
6430
.93750
6431
.94375
6432
.95000
6433
.95625
6434
.96250
6435
.96875
6436
.97500
6437
.98125
6438
.98750
6439
.99375
6440 159.00000
6441
.00625
6442
.01250
6443
.01875
6444
.02500
6445
.03125
6446
.03750
6447
.04375
6448
.05000
6449
.05625
6450
.06250
6451
.06875
6452
.07500
6453
.08125
6454
.08750
6455
.09375
6456
.10000
6457
.10625
6458
.11250
6459
.11875
6460
.12500
6461
.13125
6462
.13750
6463
.14375
6464
.15000
6465
.15625
6466
.16250
6467
.16875
6468
.17500
6469
.18125
6470
.18750
6471
.19375
6472
.20000
6473
.20625
6474
.21250
6475
.21875
6476
.22500
6477
.23125
6478
.23750
6479
.24375
6480 159.25000
6481
.25625
6482
.26250
6483
.26875
6484
.27500
6485
.28125
6486
.28750
6487
.29375
6488
.30000
6489
.30625
6490
.31250
6491
.31875
6492
.32500
6493
.33125
6494
.33750
6495
.34375
6496
.35000
6497
.35625
6498
.36250
6499
.36875
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
159.37500
.38125
.38750
.39375
.40000
.40625
.41250
.41875
.42500
.43125
.43750
.44375
.45000
.45625
.46250
.46875
.47500
.48125
.48750
.49375
159.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
.56250
.56875
.57500
.58125
.58750
.59375
.60000
.60625
.61250
.61875
.62500
.63125
.63750
.64375
.65000
.65625
.66250
.66875
.67500
.68125
.68750
.69375
.70000
.70625
.71250
.71875
.72500
.73125
.73750
.74375
159.75000
.75625
.76250
.76875
.77500
.78125
.78750
.79375
.80000
.80625
.81250
.81875
.82500
.83125
.83750
4-3
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
6575 159.84375
6576
.85000
6577
.85625
6578
.86250
6579
.86875
6580
.87500
6581
.88125
6582
.88750
6583
.89375
6584
.90000
6585
.90625
6586
.91250
6587
.91875
6588
.92500
6589
.93125
6590
.93750
6591
.94375
6592
.95000
6593
.95625
6594
.96250
6595
.96875
6596
.97500
6597
.98125
6598
.98750
6599
.99375
6600 160.00000
6601
.00625
6602
.01250
6603
.01875
6604
.02500
6605
.03125
6606
.03750
6607
.04375
6608
.05000
6609
.05625
6610
.06250
6611
.06875
6612
.07500
6613
.08125
6614
.08750
6615
.09375
6616
.10000
6617
.10625
6618
.11250
6619
.11875
6620
.12500
6621
.13125
6622
.13750
6623
.14375
6624
.15000
6625
.15625
6626
.16250
6627
.16875
6628
.17500
6629
.18125
6630
.18750
6631
.19375
6632
.20000
6633
.20625
6634
.21250
6635
.21875
6636
.22500
6637
.23125
6638
.23750
6639
.24375
6640 160.25000
6641
.25625
6642
.26250
6643
.26875
6644
.27500
6645
.28125
6646
.28750
6647
.29375
6648
.30000
6649
.30625
4-4
Chan.
Num.
Freq.
(MHz)
6650 160.31250
6651
.31875
6652
.32500
6653
.33125
6654
.33750
6655
.34375
6656
.35000
6657
.35625
6658
.36250
6659
.36875
6660
.37500
6661
.38125
6662
.38750
6663
.39375
6664
.40000
6665
.40625
6666
.41250
6667
.41875
6668
.42500
6669
.43125
6670
.43750
6671
.44375
6672
.45000
6673
.45625
6674
.46250
6675
.46875
6676
.47500
6677
.48125
6678
.48750
6679
.49375
6680 160.50000
6681
.50625
6682
.51250
6683
.51875
6684
.52500
6685
.53125
6686
.53750
6687
.54375
6688
.55000
6689
.55625
6690
.56250
6691
.56875
6692
.57500
6693
.58125
6694
.58750
6695
.59375
6696
.60000
6697
.60625
6698
.61250
6699
.61875
6700
.62500
6701
.63125
6702
.63750
6703
.64375
6704
.65000
6705
.65625
6706
.66250
6707
.66875
6708
.67500
67 09
.68125
6710
.68750
6711
.69375
6712
.70000
6713
.70625
6714
.71250
6715
.7 1875
6716
.72500
6717
.73125
6718
.73750
6719
.74375
6720 160.75000
6721
.75625
6722
.76250
6723
.76875
6724
.77500
Chan.
Num.
Freq.
(MHz)
6725 160.78125
6726
.78750
6727
.79375
6728
.80000
6729
.80625
6730
.81250
6731
.81875
6732
.82500
6733
.83125
6734
.83750
6735
.84375
6736
.85000
6737
.85625
6738
.86250
6739
.86875
6740
.87500
6741
.88125
6742
.88750
6743
.89375
6744
.90000
6745
.90625
6746
.91250
6747
.91875
6748
.92500
6749
.93125
6750
.93750
6751
.94375
6752
.95000
6753
.95625
6754
.96250
6755
.96875
6756
.97500
6757
.98125
6758
.98750
6759
.99375
6760 161.00000
6761
.00625
6762
.01250
6763
.01875
6764
.02500
6765
.03125
6766
.03750
6767
.04375
6768
.05000
6769
.05625
6770
.06250
6771
.06875
6772
.07500
6773
.08125
6774
.08750
6775
.09375
6776
.10000
6777
.10625
6778
.11250
6779
.11875
6780
.12500
6781
.13125
6782
.13750
6783
.14375
6784
.15000
6785
.15625
6786
.16250
6787
.16875
6788
.17500
6789
.18125
6790
.18750
6791
.19375
6792
.20000
6793
.20625
6794
.21250
6795
.21875
6796
.22500
6797
.23125
6798
.23750
6799
.24375
Chan.
Num.
Freq.
(MHz)
6800 161.25000
6801
.25625
6802
.26250
6803
.26875
6804
.27500
6805
.28125
6806
.28750
6807
.29375
6808
.30000
6809
.30625
6810
.31250
6811
.31875
6812
.32500
6813
.33125
6814
.33750
6815
.34375
6816
.35000
6817
.35625
6818
.36250
6819
.36875
6820
.37500
6821
.38125
6822
.38750
6823
.39375
6824
.40000
6825
.40625
6826
.41250
6827
.41875
6828
.42500
6829
.43125
6830
.43750
6831
.44375
6832
.45000
6833
.45625
6834
.46250
6835
.46875
6836
.47500
6837
.48125
6838
.48750
6839
.49375
6840 161.50000
6841
.50625
6842
.51250
6843
.51875
6844
.52500
6845
.53125
6846
.53750
6847
.54375
6848
.55000
6849
.55625
6850
.56250
6851
.56875
6852
.57500
6853
.58125
6854
.58750
6855
.59375
6856
.60000
6857
.60625
6858
.61250
6859
.61875
6860
.62500
6861
.63125
6862
.63750
6863
.64375
6864
.65000
6865
.65625
6866
.66250
6867
.66875
6868
.67500
6869
.68125
6870
.68750
6871
.69375
6872
.70000
6873
.70625
6874
.71250
Chan.
Num.
Freq.
(MHz)
6875 161.71875
6876
.72500
6877
.73125
6878
.73750
6879
.74375
6880 161.75000
6881
.75625
6882
.76250
6883
.76875
6884
.77500
6885
.78125
6886
.78750
6887
.79375
6888
.80000
6889
.80625
6890
.81250
6891
.81875
6892
.82500
6893
.83125
6894
.83750
6895
.84375
6896
.85000
6897
.85625
6898
.86250
6899
.86875
6900
.87500
6901
.88125
6902
.88750
6903
.89375
6904
.90000
6905
.90625
6906
.91250
6907
.91875
6908
.92500
6909
.93125
6910
.93750
6911
.94375
6912
.95000
6913
.95625
6914
.96250
6915
.96875
6916
.97500
6917
.98125
6918
.98750
6919
.99375
6920 162.00000
6921
.00625
6922
.01250
6923
.01875
6924
.02500
6925
.03125
6926
.03750
6927
.04375
6928
.05000
6929
.05625
6930
.06250
6931
.06875
6932
.07500
6933
.08125
6934
.08750
6935
.09375
6936
.10000
6937
.10625
6938
.11250
6939
.11875
6940
.12500
6941
.13125
6942
.13750
6943
.14375
6944
.15000
6945
.15625
6946
.16250
6947
.16875
6948
.17500
6949
.18125
Cha n.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
6950 162.18750
6951
.19375
6952
.20000
6953
.20625
6954
.21250
6955
.21875
6956
.22500
6957
.23125
6958
.23750
6959
.24375
6960 162.25000
6961
.25625
6962
.26250
69 63
.26875
6964
.27500
6965
.28125
6966
.28750
6967
.29375
6968
.30000
6969
.3 0625
6970
.31250
6971
.31875
6972
.32500
6973
.33125
6974
.33750
6975
.34375
6976
.35000
6977
.35625
6978
.36250
6979
.36875
6980
.37500
6981
.38125
6982
.38750
6983
.39375
6984
.40000
6985
.40625
6986
.41250
6987
.41875
6988
.42500
6989
.43125
6990
.43750
6991
.44375
6992
.45000
6993
.45625
6994
.46250
6995
.46875
6996
.47500
6997
.48125
6998
.48750
6999
.49375
7000 162.50000
7001
.50625
7002
.51250
7003
.51875
7004
.52500
7005
.53125
7006
.53750
7007
.54375
7008
.55000
7009
.55625
7010
.56250
7011
.56875
7012
.57500
7013
.58125
7014
.58750
7015
.59375
7016
.60000
7017
.60625
7018
.61250
7019
.61875
7020
.62500
7021
.63125
7022
.63750
7023
.64375
7024
.65000
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
162.65625
.66250
.66875
.67500
.68125
.68750
.69375
.70000
.70625
.71250
.71875
.72500
.73125
.73750
.74375
162.75000
.75625
.76250
.76875
.77500
.78125
.78750
.79375
.80000
.80625
.81250
.81875
.82500
.83125
.83750
.84375
.85000
.85625
.86250
.86875
.87500
.88125
.88750
.89375
.90000
.90625
.91250
.91875
.92500
.93125
.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
163.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
7100 163.12500
7101
.13125
7102
.13750
7103
.14375
7104
.15000
7105
.15625
7106
.16250
7107
.16875
7108
.17500
7109
.18125
7110
.18750
7111
.19375
7112
.20000
7113
.20625
7114
.21250
7115
.21875
7116
.22500
7117
.23125
7118
.23750
7119
.24375
7120 163.25000
7121
.25625
7122
.26250
7123
.26875
7124
.27500
7125
.28125
7126
.28750
7127
.29375
7128
.30000
7129
.30625
7130
.31250
7131
.31875
7132
.32500
7133
.33125
7134
.33750
7135
.34375
7136
.35000
7137
.35625
7138
.36250
7139
.36875
7140
.37500
7141
.38125
7142
.38750
7143
.39375
7144
.40000
7145
.40625
7146
.41250
7147
.41875
7148
.42500
7149
.43125
7150
.43750
7151
.44375
7152
.45000
7153
.45625
7154
.46250
7155
.46875
7156
.47500
7157
.48125
7158
.48750
7159
.49375
7160 163.50000
7161
.50625
7162
.51250
7163
.51875
7164
.52500
7165
.53125
7166
.53750
7167
.54375
7168
.55000
7169
.55625
7170
.56250
7171
.56875
7172
.57500
7173
.58125
7174
.58750
Chan.
Num.
Freq.
(MHz)
7175 163.59375
7176
.60000
7177
.60625
7178
.61250
7179
.61875
7180
.62500
7181
.63125
7182
.63750
7183
.64375
7184
.65000
7185
.65625
7186
.66250
7187
.66875
7188
.67500
7189
.68125
7190
.68750
7191
.69375
7192
.70000
7193
.70625
7194
.71250
7195
.71875
7196
.72500
7197
.73125
7198
.73750
7199
.74375
7200 163.75000
7201
.75625
7202
.76250
7203
.76875
7204
.77500
7205
.78125
7206
.78750
7207
.79375
7208
.80000
7209
.80625
7210
.81250
7211
.81875
7212
.82500
7213
.83125
7214
.83750
7215
.84375
7216
.85000
7217
.85625
7218
.86250
7219
.86875
7220
.87500
7221
.88125
7222
.88750
7223
.89375
7224
.90000
7225
.90625
7226
.91250
7227
.91875
7228
.92500
7229
.93125
7230
.93750
7231
.94375
7232
.95000
7233
.95625
7234
.96250
7235
.96875
7236
.97500
7237
.98125
7238
.98750
7239
.99375
7240 164.00000
7241
.00625
7242
.01250
7243
.01875
7244
.02500
7245
.03125
7246
.03750
7247
.04375
7248
.05000
7249
.05625
Chan.
Num.
Freq.
(MHz)
7250 164.06250
7251
.06875
7252
.07500
7253
.08125
7254
.08750
7255
.09375
7256
.10000
7257
.10625
7258
.11250
7259
.11875
7260
.12500
7261
.13125
7262
.13750
7263
.14375
72 64
.15000
7265
.15625
7266
.16250
7267
.16875
7268
.17500
7269
.18125
7270
.1 8750
7271
.19375
7272
.20000
7273
.20625
7274
.21250
7275
.21875
7276
.22500
7277
.23125
7278
.23750
7279
.24375
7280 164.25000
7281
.25625
7282
.26250
7283
.26875
7284
.27500
7285
.28125
7286
.28750
7287
.29375
7288
.30000
7289
.30625
7290
.31250
7291
.31875
7292
.32500
7293
.33125
7294
.33750
7295
.34375
7296
.35000
7297
.35625
7298
.36250
7299
.36875
7300
.37500
7301
.38125
7302
.38750
7303
.39375
7304
.40000
7305
.40625
7306
.41250
7307
.41875
7308
.42500
7309
.43125
7310
.43750
7311
.44375
7312
.45000
7313
.45625
7314
.46250
7315
.46875
7316
.47500
7317
.48125
7318
.48750
7319
.49375
7320 164.50000
7321
.50625
7322
.51250
7323
.51875
7324
.52500
Chan.
Num.
Freq.
(MHz)
7325 164.53125
7326
.53750
7327
.54375
7328
.55000
7329
.55625
7330
.56250
7331
.56875
7332
.57500
7333
.58125
7334
.58750
7335
.59375
7336
.60000
7337
.60625
7338
.61250
7339
.61875
7340
.62500
7341
.63125
7342
.63750
7343
.64375
7344
.65000
7345
.65625
7346
.66250
7347
.66875
7348
.67500
7349
.68125
7350
.68750
7351
.69375
7352
.70000
7353
.70625
7354
.71250
7355
.71875
7356
.72500
7357
.73125
7358
.73750
7359
.74375
7360 164.75000
7361
.75625
7362
.76250
7363
.76875
7364
.77500
7365
.78125
7366
.78750
7367
.79375
7368
.80000
7369
.80625
7370
.81250
7371
.81875
7372
.82500
7373
.83125
7374
.83750
7375
.84375
7376
.85000
7377
.85625
7378
.86250
7379
.86875
7380
.87500
7381
.88125
7382
.88750
7383
.89375
7384
.90000
7385
.90625
7386
.91250
7387
.91875
7388
.92500
7389
.93125
7390
.93750
7391
.94375
7392
.95000
7393
.95625
7394
.96250
7395
.96875
7396
.97500
7397
.98125
7398
.98750
7399
.99375
Chan.
Num.
Freq.
(MHz)
7400 165.00000
7401
.00625
7402
.01250
7403
.01875
7404
.02500
7405
.03125
7406
.03750
7407
.04375
7408
.05000
7409
.05625
7410
.06250
7411
.06875
7412
.07500
7413
.08125
7414
.08750
7415
.09375
7416
.10000
7417
.10625
7418
.11250
7419
.11875
7420
.12500
7421
.13125
7422
.13750
7423
.14375
7424
.15000
7425
.15625
7426
.16250
7427
.16875
7428
.17500
7429
.18125
7430
.18750
7431
.19375
7432
.20000
7433
.20625
7434
.21250
7435
.21875
7436
.22500
7437
.23125
7438
.23750
7439
.24375
7440 165.25000
7441
.25625
7442
.26250
7443
.26875
7444
.27500
7445
.28125
7446
.28750
7447
.29375
7448
.30000
7449
.30625
7450
.31250
7451
.31875
7452
.32500
7453
.33125
7454
.33750
7455
.34375
7456
.35000
7457
.35625
7458
.36250
7459
.36875
7460
.37500
7461
.38125
7462
.38750
7463
.39375
7464
.40000
7465
.40625
7466
.41250
7467
.41875
7468
.42500
7469
.43125
7470
.43750
7471
.44375
7472
.45000
7473
.45625
7474
.46250
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
7475 165.46875
7476
.47500
7477
.48125
7478
.48750
7479
.49375
7480 165.50000
7481
.50625
7482
.51250
7483
.51875
7484
.52500
7485
.53125
7486
.53750
7487
.54375
7488
.55000
7489
.55625
7490
.56250
7491
.56875
7492
.57500
7493
.58125
7494
.58750
7495
.59375
7496
.60000
7497
.60625
7498
.61250
7499
.61875
7500
.62500
7501
.63125
7502
.63750
7503
.64375
7504
.65000
7505
.65625
7506
.66250
7507
.66875
7508
.67500
7509
.68125
7510
.68750
7511
.69375
7512
.70000
7513
.70625
7514
.71250
7515
.71875
7516
.72500
7517
.73125
7518
.73750
7519
.74375
7520 165.75000
7521
.75625
7522
.76250
7523
.76875
7524
.77500
7525
.78125
7526
.78750
7527
.79375
7528
.80000
7529
.80625
7530
.81250
7531
.81875
7532
.82500
7533
.83125
7534
.83750
7535
.84375
7536
.85000
7537
.85625
7538
.86250
7539
.86875
7540
.8 7500
7541
.88125
7542
.88750
7543
.89375
7544
.90000
7545
.90625
7546
.91250
7547
.91875
7548
.92500
7549
.93125
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
165.93750
.94375
.95000
.95625
.96250
.96875
.97500
.98125
.98750
.99375
166.00000
.00625
.01250
.01875
.02500
.03125
.03750
.04375
.05000
.05625
.06250
.06875
.07500
.08125
.08750
.09375
.10000
.10625
.11250
.11875
.12500
.13125
.13750
.14375
.15000
.15625
.16250
.16875
.17500
.18125
.18750
.19375
.20000
.20625
.21250
.21875
.22500
.23125
.23750
.24375
166.25000
.25625
.26250
.26875
.27500
.28125
.28750
.29375
.30000
.30625
.31250
.31875
.32500
.33125
.33750
.34375
.35000
.35625
.36250
.36875
.37500
.38125
.38750
.39375
.40000
4-5
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
7625 166.40625
7626
.41250
7627
.41875
7628
.42500
7629
.43125
7630
.43750
7631
.44375
7632
.45000
7633
.45625
7634
.46250
7635
.46875
7636
.47500
7637
.48125
7638
.48750
7639
.49375
7640 166.50000
7641
.50625
7642
.51250
7643
.51875
7644
.52500
7645
.53125
7646
.53750
7647
.54375
7648
.55000
7649
.55625
7650
.56250
7651
.56875
7652
.57500
7653
.58125
7654
.58750
7655
.59375
7656
.60000
7657
.60625
7658
.61250
7659
.61875
7660
.62500
7661
.63125
7662
.63750
7663
.64375
7664
.65000
7665
.65625
7666
.66250
7667
.66875
7668
.67500
7669
.68125
7670
.68750
7671
.69375
7672
.70000
7673
.70625
7674
.71250
7675
.71875
7676
.72500
7677
.73125
7678
.73750
7679
.74375
7680 166.75000
7681
.75625
7682
.76250
7683
.76875
7684
.77500
7685
.78125
7686
.78750
7687
.79375
7688
.80000
7689
.80625
7690
.81250
7691
.81875
7692
.82500
7693
.83125
7694
.83750
7695
.84375
7696
.85000
7697
.85625
7698
.86250
7699
.86875
4-6
Chan.
Num.
Freq.
(MHz)
7700 166.87500
7701
.88125
7702
.88750
7703
.89375
7704
.90000
7705
.90625
7706
.91250
7707
.91875
7708
.92500
7709
.93125
7710
.93750
7711
.94375
7712
.95000
7713
.95625
7714
.96250
7715
.96875
7716
.97500
7717
.98125
7718
.98750
7719
.99375
7720 167.00000
7721
.00625
7722
.01250
7723
.01875
7724
.02500
7725
.03125
7726
.03750
7727
.04375
7728
.05000
7729
.05625
7730
.06250
7731
.06875
7732
.07500
7733
.08125
7734
.08750
7735
.09375
7736
.10000
7737
.10625
7738
.11250
7739
.11875
7740
.12500
7741
.13125
7742
.13750
7743
.14375
7744
.15000
7745
.15625
7746
.16250
7747
.16875
7748
.17500
7749
.18125
7750
.18750
7751
.19375
7752
.20000
7753
.20625
7754
.21250
7755
.21875
7756
.22500
7757
.23125
7758
.23750
7759
.24375
7760 167.25000
7761
.25625
7762
.26250
7763
.26875
7764
.27500
7765
.28125
7766
.28750
7767
.29375
7768
.30000
7769
.30625
7770
.31250
7771
.31875
7772
.32500
7773
.33125
7774
.33750
Chan.
Num.
Freq.
(MHz)
7775 167.34375
7776
.35000
7777
.35625
7778
.36250
7779
.36875
7780
.37500
7781
.38125
7782
.38750
7783
.39375
7784
.40000
7785
.40625
7786
.41250
7787
.41875
7788
.42500
7789
.43125
7790
.43750
7791
.44375
7792
.45000
7793
.45625
7794
.46250
7795
.46875
7796
.47500
7797
.48125
7798
.48750
7799
.49375
7800 167.50000
7801
.50625
7802
.51250
7803
.51875
7804
.52500
7805
.53125
7806
.53750
7807
.54375
7808
.55000
7809
.55625
7810
.56250
7811
.56875
7812
.57500
7813
.58125
7814
.58750
7815
.59375
7816
.60000
7817
.60625
7818
.61250
7819
.61875
7820
.62500
7821
.63125
7822
.63750
7823
.64375
7824
.65000
7825
.65625
7826
.66250
7827
.66875
7828
.67500
7829
.68125
7830
.68750
7831
.69375
7832
.70000
7833
.70625
7834
.71250
78 35
.71875
7836
.72500
7837
.73125
7838
.73750
7839
.74375
7840 167.75000
7841
.7 5625
7842
.76250
7843
.76875
7844
.77500
7845
.78125
7846
.78750
7847
.79375
7848
.80000
7849
.80625
Chan.
Num.
Freq.
(MHz)
7850 167.81250
7851
.81875
7852
.82500
7853
.83125
7854
.83750
7855
.84375
7856
.85000
7857
.85625
7858
.86250
7859
.86875
7860
.87500
7861
.88125
7862
.88750
7863
.89375
7864
.90000
7865
.90625
7866
.91250
7867
.91875
7868
.92500
7869
.93125
7870
.93750
7871
.94375
7872
.95000
7873
.95625
7874
.96250
7875
.96875
7876
.97500
7877
.98125
7878
.98750
7879
.99375
7880 168.00000
7881
.00625
7882
.01250
7883
.01875
7884
.02500
7885
.03125
7886
.03750
7887
.04375
7888
.05000
7889
.05625
7890
.06250
7891
.06875
7892
.07500
7893
.08125
7894
.08750
7895
.09375
7896
.10000
7897
.10625
7898
.11250
7899
.11875
7900
.12500
7901
.13125
7902
.13750
7903
.14375
7904
.15000
7905
.15625
7906
.16250
7907
.16875
7908
.17500
7909
.18125
7910
.18750
7911
.19375
7912
.20000
7913
.20625
7914
.21250
7915
.21875
7916
.22500
7917
.23125
7918
.23750
7919
.24375
7920 168.25000
7921
.25625
7922
.26250
7923
.26875
7924
.27500
Chan.
Num.
Freq.
(MHz)
7925 168.28125
7926
.28750
7927
.29375
7928
.30000
7929
.30625
7930
.31250
7931
.31875
7932
.32500
7933
.33125
7934
.33750
7935
.34375
7936
.35000
7937
.35625
7938
.36250
7939
.36875
7940
.37500
7941
.38125
7942
.38750
7943
.39375
7944
.40000
7945
.40625
7946
.41250
7947
.41875
7948
.42500
7949
.43125
7950
.43750
7951
.44375
7952
.45000
7953
.45625
7954
.46250
7955
.46875
7956
.47500
7957
.48125
7958
.48750
7959
.49375
7960 168.50000
7961
.50625
7962
.51250
7963
.51875
7964
.52500
7965
.53125
7966
.53750
7967
.54375
7968
.55000
7969
.55625
7970
.56250
7971
.56875
7972
.57500
7973
.58125
7974
.58750
7975
.59375
7976
.60000
7977
.60625
7978
.61250
7979
.61875
7980
.62500
7981
.63125
7982
.63750
7983
.64375
7984
.65000
7985
.65625
7986
.66250
7987
.66875
7988
.67500
7989
.68125
7990
.68750
7991
.69375
7992
.70000
7993
.70625
7994
.71250
7995
.71875
7996
.72500
7997
.73125
7998
.73750
7999
.74375
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
8000 168.75000
8001
.75625
8002
.76250
8003
.76875
8004
.77500
8005
.78125
8006
.78750
8007
.79375
8008
.80000
8009
.80625
8010
.81250
8011
.81875
8012
.82500
8013
.83125
8014
.83750
8015
.84375
8016
.85000
8017
.85625
8018
.86250
8019
.86875
8020
.87500
8021
.88125
8022
.88750
8023
.89375
8024
.90000
8025
.90625
8026
.91250
8027
.91875
8028
.92500
8029
.93125
8030
.93750
8031
.94375
8032
.95000
8033
.95625
8034
.96250
8035
.96875
8036
.97500
8037
.98125
8038
.98750
8039
.99375
8040 169.00000
8041
.00625
8042
.01250
8043
.01875
8044
.02500
8045
.03125
8046
.03750
8047
.04375
8048
.05000
8049
.05625
8050
.06250
8051
.06875
8052
.07500
8053
.08125
8054
.08750
8055
.09375
8056
.10000
8057
.10625
8058
.11250
8059
.11875
8060
.12500
8061
.13125
8062
.13750
8063
.14375
8064
.15000
8065
.15625
8066
.16250
8067
.16875
8068
.17500
8069
.18125
8070
.18750
8071
.19375
8072
.20000
8073
.20625
8074
.21250
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
169.21875
.22500
.23125
.23750
.24375
169.25000
.25625
.26250
.26875
.27500
.28125
.28750
.29375
.30000
.30625
.31250
.31875
.32500
.33125
.33750
.3 4375
.35000
.35625
.36250
.36875
.37500
.38125
.38750
.39375
.40000
.40625
.41250
.41875
.42500
.43125
.43750
.44375
.45000
.45625
.46250
.46875
.47500
.48125
.48750
.49375
169.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
.56250
.56875
.57500
.58125
.58750
.59375
.60000
.60625
.61250
.61875
.62500
.63125
.63750
.64375
.65000
.65625
.66250
.66875
.67500
.68125
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
8150 169.68750
8151
.69375
8152
.70000
8153
.70625
8154
.71250
8155
.71875
8156
.72500
8157
.73125
8158
.73750
8159
.74375
8160 169.75000
8161
.75625
8162
.76250
8163
.76875
8164
.77500
8165
.78125
8166
.78750
8167
.79375
8168
.80000
8169
.80625
8170
.81250
8171
.81875
8172
.82500
8173
.83125
8174
.83750
8175
.84375
8176
.85000
8177
.85625
8178
.86250
8179
.86875
8180
.87500
8181
.88125
8182
.88750
8183
.89375
8184
.90000
8185
.90625
8186
.91250
8187
.91875
8188
.92500
8189
.93125
8190
.93750
8191
.94375
8192
.95000
8193
.95625
8194
.96250
8195
.96875
8196
.97500
8197
.98125
8198
.98750
8199
.99375
8200 170.00000
8201
.00625
8202
.01250
8203
.01875
8204
.02500
8205
.03125
8206
.03750
8207
.04375
8208
.05000
8209
.05625
8210
.06250
8211
.06875
8212
.07500
8213
.08125
8214
.08750
8215
.09375
8216
.10000
8217
.10625
8218
.11250
8219
.11875
8220
.12500
8221
.13125
8222
.13750
8223
.14375
8224
.15000
Chan.
Num.
Freq.
(MHz)
8225 170.15625
8226
.16250
8227
.16875
8228
.17500
8229
.18125
8230
.18750
8231
.19375
8232
.20000
8233
.20625
8234
.21250
8235
.21875
8236
.22500
8237
.23125
8238
.23750
8239
.24375
8240 170.25000
8241
.25625
8242
.26250
8243
.26875
8244
.27500
8245
.28125
8246
.28750
8247
.29375
8248
.30000
8249
.30625
8250
.31250
8251
.31875
8252
.32500
8253
.33125
8254
.33750
8255
.34375
8256
.35000
8257
.35625
8258
.36250
8259
.36875
8260
.37500
8261
.38125
8262
.38750
8263
.39375
8264
.40000
8265
.40625
8266
.41250
8267
.41875
8268
.42500
8269
.43125
8270
.43750
8271
.44375
8272
.45000
8273
.45625
8274
.46250
8275
.46875
8276
.47500
8277
.48125
8278
.48750
8279
.49375
8280 170.50000
8281
.50625
8282
.51250
8283
.51875
8284
.52500
8285
.53125
8286
.53750
8287
.54375
8288
.55000
8289
.55625
8290
.56250
8291
.56875
8292
.57500
8293
.58125
8294
.58750
8295
.59375
8296
.60000
8297
.60625
8298
.61250
8299
.61875
Chan.
Num.
Freq.
(MHz)
8300 170.62500
8301
.63125
8302
.63750
8303
.64375
8304
.65000
8305
.65625
8306
.66250
8307
.66875
8308
.67500
8309
.68125
8310
.68750
8311
.69375
8312
.70000
8313
.70625
8314
.71250
8315
.71875
8316
.72500
8317
.73125
8318
.73750
8319
.74375
8320 170.75000
8321
.75625
8322
.76250
8323
.76875
8324
.77500
8325
.78125
8326
.78750
8327
.79375
8328
.80000
8329
.80625
8330
.81250
8331
.81875
8332
.82500
8333
.83125
8334
.83750
8335
.84375
8336
.85000
8337
.85625
8338
.86250
8339
.86875
8340
.87500
8341
.88125
8342
.88750
8343
.89375
8344
.90000
8345
.90625
8346
.91250
8347
.91875
8348
.92500
8349
.93125
8350
.93750
8351
.94375
8352
.95000
8353
.95625
8354
.96250
8355
.96875
8356
.97500
8357
.98125
8358
.98750
8359
.99375
8360 171.00000
8361
.00625
8362
.01250
8363
.01875
8364
.02500
8365
.03125
8366
.03750
8367
.04375
8368
.05000
8369
.05625
8370
.06250
8371
.06875
8372
.07500
8373
.08125
8374
.08750
Chan.
Num.
Freq.
(MHz)
8375 171.09375
8376
.10000
8377
.10625
8378
.11250
8379
.11875
8380
.12500
8381
.13125
8382
.13750
8383
.14375
8384
.15000
8385
.15625
8386
.16250
8387
.16875
8388
.17500
8389
.18125
83 90
.18750
8391
.19375
8392
.20000
8393
.20625
8394
.21250
8395
.21875
8396
.2 2500
8397
.23125
8398
.23750
8399
.24375
8400 171.25000
8401
.25625
8402
.26250
8403
.26875
8404
.27500
8405
.28125
8406
.28750
8407
.29375
8408
.30000
8409
.30625
8410
.31250
8411
.31875
8412
.32500
8413
.33125
8414
.33750
8415
.34375
8416
.35000
8417
.35625
8418
.36250
8419
.36875
8420
.37500
8421
.38125
8422
.38750
8423
.39375
8424
.40000
8425
.40625
8426
.41250
8427
.41875
8428
.42500
8429
.43125
8430
.43750
8431
.44375
8432
.45000
8433
.45625
8434
.46250
8435
.46875
8436
.47500
8437
.48125
8438
.48750
8439
.49375
8440 171.50000
8441
.50625
8442
.51250
8443
.51875
8444
.52500
8445
.53125
8446
.53750
8447
.54375
8448
.55000
8449
.55625
Chan.
Num.
Freq.
(MHz)
8450 171.56250
8451
.56875
8452
.57500
8453
.58125
8454
.58750
8455
.59375
8456
.60000
8457
.60625
8458
.61250
8459
.61875
8460
.62500
8461
.63125
8462
.63750
8463
.64375
8464
.65000
8465
.65625
8466
.66250
8467
.66875
8468
.67500
8469
.68125
8470
.68750
8471
.69375
8472
.70000
8473
.70625
8474
.71250
8475
.71875
8476
.72500
8477
.73125
8478
.73750
8479
.74375
8480 171.75000
8481
.75625
8482
.76250
8483
.76875
8484
.77500
8485
.78125
8486
.78750
8487
.79375
8488
.80000
8489
.80625
8490
.81250
8491
.81875
8492
.82500
8493
.83125
8494
.83750
8495
.84375
8496
.85000
8497
.85625
8498
.86250
8499
.86875
8500
.87500
8501
.88125
8502
.88750
8503
.89375
8504
.90000
8505
.90625
8506
.91250
8507
.91875
8508
.92500
8509
.93125
8510
.93750
8511
.94375
8512
.95000
8513
.95625
8514
.96250
8515
.96875
8516
.97500
8517
.98125
8518
.98750
8519
.99375
8520 172.00000
8521
.00625
8522
.01250
8523
.01875
8524
.02500
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
8525 172.03125
8526
.03750
8527
.04375
8528
.05000
8529
.05625
8530
.06250
8531
.06875
8532
.07500
8533
.08125
8534
.08750
8535
.09375
8536
.10000
8537
.10625
8538
.11250
8539
.11875
8540
.12500
8541
.13125
8542
.13750
8543
.14375
8544
.15000
8545
.15625
8546
.16250
8547
.16875
8548
.17500
8549
.18125
8550
.18750
8551
.19375
8552
.20000
8553
.20625
8554
.21250
8555
.21875
8556
.22500
8557
.23125
8558
.23750
8559
.24375
8560 172.25000
8561
.25625
8562
.26250
8563
.26875
8564
.27500
8565
.28125
8566
.28750
8567
.29375
8568
.30000
8569
.30625
8570
.31250
8571
.31875
8572
.32500
8573
.3 3125
8574
.33750
8575
.34375
8576
.35000
8577
.35625
8578
.36250
8579
.36875
8580
.37500
8581
.38125
8582
.38750
8583
.39375
8584
.40000
8585
.40625
8586
.41250
8587
.41875
8588
.42500
8589
.43125
8590
.43750
8591
.44375
8592
.45000
8593
.45625
8594
.46250
8595
.46875
8596
.47500
8597
.48125
8598
.48750
8599
.49375
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
86 60
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
172.50000
.50625
.51250
.51875
.52500
.53125
.53750
.54375
.55000
.55625
.56250
.56875
.57500
.58125
.58750
.59375
.60000
.60625
.61250
.61875
.62500
.63125
.63750
.64375
.65000
.65625
.66250
.66875
.67500
.68125
.68750
.69375
.70000
.70625
.71250
.71875
.72500
.73125
.73750
.74375
172.75000
.75625
.76250
.76875
.77500
.78125
.78750
.79375
.80000
.80625
.81250
.81875
.82500
.83125
.83750
.84375
.85000
.85625
.86250
.86875
.87500
.88125
.88750
.89375
.90000
.90625
.9 1250
.91875
.92500
.93125
.93750
.94375
.95000
.95625
.96250
4-7
VT-3/160 Channel Designation Table: 150 to 174 MHz, 6.25 kHz Increments (continued)
Chan.
Num.
Freq.
(MHz)
8675 172.96875
8676
.97500
8677
.98125
8678
.98750
8679
.99375
8680 173.00000
8681
.00625
8682
.01250
8683
.01875
8684
.02500
8685
.03125
8686
.03750
8687
.04375
8688
.05000
8689
.05625
8690
.06250
8691
.06875
8692
.07500
8693
.08125
8694
.08750
8695
.09375
8696
.10000
8697
.10625
8698
.11250
8699
.11875
8700
.12500
8701
.13125
8702
.13750
8703
.14375
8704
.15000
8705
.15625
8706
.16250
8707
.16875
8708
.17500
8709
.18125
8710
.18750
8711
.19375
8712
.20000
8713
.20625
8714
.21250
8715
.21875
8716
.22500
8717
.23125
8718
.23750
8719
.24375
8720 173.25000
8721
.25625
8722
.26250
8723
.26875
8724
.27500
8725
.28125
8726
.28750
8727
.29375
8728
.30000
8729
.30625
8730
.31250
8731
.31875
8732
.32500
8733
.33125
8734
.33750
8735
.34375
8736
.35000
8737
.35625
8738
.36250
8739
.36875
8740
.37500
8741
.38125
8742
.38750
8743
.39375
8744
.40000
8745
.40625
8746
.41250
8747
.41875
8748
.42500
8749
.43125
4-8
Chan.
Num.
Freq.
(MHz)
8750 173.43750
8751
.44375
8752
.45000
8753
.45625
8754
.46250
8755
.46875
8756
.47500
8757
.48125
8758
.48750
8759
.49375
8760 173.50000
8761
.50625
8762
.51250
8763
.51875
8764
.52500
8765
.53125
8766
.53750
8767
.54375
8768
.55000
8769
.55625
8770
.56250
8771
.56875
8772
.57500
8773
.58125
8774
.58750
8775
.59375
8776
.60000
8777
.60625
8778
.61250
8779
.61875
8780
.62500
8781
.63125
8782
.63750
8783
.64375
8784
.65000
8785
.65625
8786
.66250
8787
.6 6875
8788
.67500
8789
.68125
8790
.68750
8791
.69375
8792
.70000
8793
.70625
8794
.71250
8795
.71875
8796
.72500
8797
.73125
8798
.73750
8799
.74375
8800 173.75000
8801
.75625
8802
.76250
8803
.76875
8804
.77500
8805
.78125
8806
.78750
8807
.79375
8808
.80000
8809
.80625
8810
.81250
8811
.81875
8812
.82500
8813
.83125
8814
.83750
8815
.84375
8816
.85000
8817
.85625
8818
.86250
8819
.86875
8820
.87500
8821
.88125
8822
.88750
8823
.89375
8824
.90000
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
Chan.
Num.
Freq.
(MHz)
8825 173.90625
8826
.91250
8827
.91875
8828
.92500
8829
.93125
8830
.93750
8831
.94375
8832
.95000
8833
.95625
8834
.96250
8835
.96875
8836
.97500
8837
.98125
8838
.98750
8839
.99375
8840 174.00000
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
5
REVISION HISTORY
ISSUE DATE
REVISION
• Issue 1
May 98
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz
5-1
This Page Intentionally Left Blank.
5-2
VHF Transmitter Channel Designation Tables VT-3 132 - 174 MHz

---

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Title                           : IM21-VT3150AMP VHF Tx Amplifier Manual
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