Codan Radio Communications VT-4-150 VT-4x150 VHF Transmitter User Manual IM21 VT3150AMP 1 VHF Amplif

Codan Radio Communications VT-4x150 VHF Transmitter IM21 VT3150AMP 1 VHF Amplif

manual

DANIELSELECTRONICS LTD. ®MT-3 RADIO SYSTEMSVHF AMPLIFIERINSTRUCTION MANUALVT-3132 - 174 MHzCovers models:VT-3/150 AmplifierCopyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may bereproduced, 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 DanielsElectronics Ltd.Issue: 1 Previous Issue: N/AIssue Date:May 98 Previous Issue Date:N/ADaniels Electronics Ltd.Printing Date:May 98Victoria, B.C.Part No.:IM21-VT3150AMPPRINTED IN CANADA
DEDANIELSELECTRONICSiiVHF Amplifier Instruction Manual VT-3 132 - 174 MHzReviewed By:Quality Assurance: _________________Name SignatureDateNOTE:The user's authority to operate this equipment could be revoked through anychanges or modifications not expressly approved by Daniels Electronics Ltd.The design of this equipment is subject to change due to continuousdevelopment. This equipment may incorporate minor changes in detail from theinformation contained in this manual.
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHziiiTABLE OF CONTENTSPage1 GENERAL....................................................................................... 1-11.1Introduction............................................................................. 1-11.2Performance Specification............................................................ 1-12THEORY OF OPERATION................................................................... 2-12.1Amplifier Operation.................................................................... 2-12.2 Power Requirements................................................................... 2-12.3 RF Circuitry............................................................................ 2-22.3.1VT-3/150 Lowpass Filter.................................................... 2-22.4 Power Control Circuitry............................................................... 2-22.5 Power Sensing Circuitry.............................................................. 2-32.5.1Output Power Sense.......................................................... 2-32.5.2VSWR Sense.................................................................. 2-32.5.3VSWR Overload.............................................................. 2-43VT-3/150 AMPLIFIER ALIGNMENT...................................................... 3-13.1 General.................................................................................. 3-13.2 Repair Note............................................................................. 3-13.3Recommended Test Equipment List................................................. 3-13.4 Printed Circuitboard Numbering Convention....................................... 3-23.5 Standard Factory Settings and Jumper Configuration............................. 3-23.6VT-3/150 Amplifier Alignment....................................................... 3-23.6.1General......................................................................... 3-23.6.2VT-3/150 Amplifier Adjustment............................................. 3-33.6.2.1General Set-Up....................................................... 3-33.6.2.2Output Power Alarm (Forward Power) ........................... 3-43.6.2.3Output Power......................................................... 3-53.6.2.4Antenna VSWR Alarm (Reverse Power).......................... 3-53.6.2.5Antenna VSWR Overload........................................... 3-63.6.2.6Procedure Verification............................................... 3-64ILLUSTRATIONS AND SCHEMATIC DIAGRAMS.................................... 4-14.1VT-3/150 VHF Amplifier Component Layout...................................... 4-24.2VT-3/150 VHF Amplifier Schematic Diagram...................................... 4-34.3VT-3/150 VHF Lowpass Filter Component Layout............................... 4-54.4VT-3/150 VHF Lowpass Filter Schematic Diagram............................... 4-5
DEDANIELSELECTRONICSivVHF Amplifier Instruction Manual VT-3 132 - 174 MHz5 PARTS LISTS...................................................................................5-15.1VT-3/150 Amplifier Electrical Parts List.............................................5-15.2VT-3/150 Low Pass Filter Electrical Parts List.....................................5-35.3VT-3/150 Amplifier Mechanical Parts List..........................................5-36REVISION HISTORY..........................................................................6-1
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz1-111GENERAL1.1 IntroductionThe VT-3/150 Amplifier provides the final stage of RF amplification and filtering for the entireVHF 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 outputpower. The VT-3/150 Amplifier is housed in a machined aluminum case that ensures optimum RFshielding, provides a good ground, and also acts as a heatsink.Additionally, the VT-3/150 Amplifier is equipped with output power and VSWR sensing lineswhich can be individually configured as open collector or linear outputs. The internal VSWRsensor protects the amplifier from high antenna VSWR by approximately halving the amplifier'sRF 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 toprovided maximum attenuation of harmonic and other spurious signals.Refer to Section 4 for the VT-3 132 - 174 MHz VHF amplifier and lowpass filter componentlayouts and schematic diagrams1.2Performance SpecificationType: 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 WattsRF 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 dBDuty Cycle:100%: Continuous operation from -40˚ C to +60˚C.Harmonic Emissions: Less than -80 dBc .
DEDANIELSELECTRONICS1-2VHF Amplifier Instruction Manual VT-3 132 - 174 MHz2Transmitter 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 maximumAmplifier Standby Current: less than 0.5 mA.Amplifier Enable:Active to ground.Amplifier Enable Response:typically overdamped, rising to within 90% of full power within 5 msec; maximum (underdamped) overshoot of 30%.
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz2-112THEORY OF OPERATION2.1Amplifier OperationA power control circuit monitors the RF output power of amplifier U4 and keeps the powerconstant. The output power from the high power amplifier will change as the unregulated +13.8Vdc supply varies. Note that the frequency band does not change how the amplifier operates; itonly 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 Vdcsupply (if required) is continuously connected to the amplifier; whereas, the +9.5 Vdc supply isalways switched by the transmitter's PTT circuitry. The VT-3/150 Amplifier will not use anypower from the +13.8 Vdc supply until the amplifier's +9.5 Vdc line is switched on and an RFinput signal is present. The synthesizer or crystal control module controls the +9.5 Vdc to theamplifier's circuitry; switching it on by grounding the amplifier's input enable line. Thesynthesizer or crystal control module will ground the input enable line only when the RF signalfrom the synthesizer or crystal control module is phase locked. This prevents unwanted spuriousemissions 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 synthesizeror crystal control module PTT line is pulled low3) an RF signal is output to the amplifier4) the amplifier's input enable line is activated5) the amplifier outputs RF power2.2Power RequirementsTypical current requirements for the VT-3/150 Amplifier at different power levels are given in theTable 2-3 below. The current drawn from the +9.5 Vdc supply should never exceed 1.2 Ampsand the current drawn from the +13.8 Vdc supply should never exceed 1.5 Amps.Table 2-1VT-3/150 Amplifier Current ConsumptionOutputPower+9.5 VdcSupply Current+13.8 VdcSupply Current2.0 W 0.64 A 0.51 A4.0 W 0.79 A 0.75 A6.0 W 0.89 A 0.93 A8.0 W 1.04 A 1.10 ANote: Current consumption measured at 153 MHz
DEDANIELSELECTRONICS2-2VHF Amplifier Instruction Manual VT-3 132 - 174 MHz22.3 RF CircuitryThe RF circuitry consists of several blocks: a 7 dB input pad (R1, R2, and R3), an RF amplifiermodule (U4), an output power boosting transistor (Q7), three directional couplers (TL1, TL3, andTL4), and the VT-3/150 Lowpass Filter. The heart of the VT-3/150 Amplifier is RF amplifiermodule U4. The output of U4 is further amplified by Q1 to a maximum of 8.0 Watts at the antennaconnector. The frequency band of the VT-3/150 Amplifier is determined by the operating frequencyrange of the RF amplifier module U4. Directional couplers (TL1, TL3, and TL4) are used tosample forward and reverse power. The sampled power is used by the sensing and power controlcircuits to control the amplifier's operation. The final step in the RF path is output filtering and, asmentioned earlier, this is done by the VT-3/150 Lowpass Filter.2.3.1VT-3/150 Lowpass FilterThe VT-3/150 Lowpass Filter is a 50 ohm, 9 pole, reciprocal filter with a 3 dB cutoff frequency ofapproximately 185 MHz. The lowpass filter assembly attenuates the desired signal's harmonics aswell as any other out-of-band emissions so that a 'clean' RF signal is output to the antennaconnector.2.4Power Control CircuitryThe VT-3/150 Amplifier employs a closed loop power control which uses a sample of the forwardRF power to control the gain of RF amplifier U4. Op-amp U1b compares the sampled RF voltageto the output power setpoint and generates an error signal which Q3 uses to control the voltage onU4's gain control pin. The output power setpoint is determined by R7, the Output Power Adjustpotentiometer.The forward power is sampled by TL1, D5, C14, R13, L6, R12, and C15. The power controlcircuitry keeps the output power of U4 constant. Therefore the amplifier's output power willfluctuate with variations in the +13.8 Vdc supply voltage.
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz2-332.5Power Sensing CircuitryThe VT-3/150 Amplifier is equipped with output power and VSWR sensing lines which can beindividually configured as open collector or linear outputs. In open collector configuration, theoutput is active low, that is, when a fail condition is detected (not enough output power or too highantenna VSWR) the open collector transistor is turned on. In linear configuration, a voltageproportional 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 Alarmsetpoint. This is because the Output Power Alarm setpoint is used as a reference by the VSWRAlarm circuitry.2.5.1Output Power SenseThe output power sense circuitry uses directional coupler TL2 to sample some of the forwardpower. The sampled power is rectified by diode D6 and capacitor C20 and then amplified byop-amp U3b. Op-amp U3b's amplification is controlled by R21, the output power alarm adjustpotentiometer. The amplified voltage is then output directly in linear operation (JU1 installed, JU2not installed) or compared by op-amp U1a which then drives transistors Q4 and Q3 for opencollector operation (JU1 not installed, JU2 installed).In open collector configuration, Q3 (the open collector output transistor) is turned on when analarm condition occurs. The adjustment range for the output power alarm can vary depending onthe setting of R21 (the Output Power Alarm Adjust potentiometer).2.5.2VSWR SenseThe VSWR sense circuitry uses directional coupler TL3 to sample some of the power reflectedfrom the antenna terminal. The reflected power is rectified by diode D7 and capacitor C25 and thenamplified by op-amp U2b. Op-amp U2b's amplification is controlled by R36, the VSWR AlarmAdjust potentiometer. The amplified voltage is then output directly in linear operation (JU4installed, JU3 not installed) or compared to the output power alarm setpoint by op-amp U3a whichthen 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 analarm condition occurs. The adjustment range for the VSWR Alarm can depending on the settingof R36 (the VSWR Alarm Adjust potentiometer).
DEDANIELSELECTRONICS2-4VHF Amplifier Instruction Manual VT-3 132 - 174 MHz42.5.3 VSWR OverloadThe VSWR overload circuit protects the VT-3/150 Amplifier from excessive antenna VSWR byreducing the amplifier's gain (output power) when an overload condition occurs. The VSWRoverload circuit (R14, R37, R39, R40, U2a, and Q6) is an extension of the VSWR sense circuitand operates the same as the VSWR sense open collector circuit. The VSWR Overload Adjustpotentiometer (R37) reduces the voltage level of the VSWR Alarm Setpoint. The voltage set byR37 is the compared to the output power alarm setpoint by op-amp U2a which then drivestransistor Q6. When transistor Q6 turns on, signaling an overload condition, resistor R14 isgrounded which reduces the output power setpoint. Reducing the output power setpoint lowers theVT-3/150 Amplifier's gain and protects the amplifiers from excessive current draw resulting fromhigh antenna VSWR.The VSWR overload circuit's range of adjustment depends on the setting of the VSWR AlarmAdjust potentiometer (R36). The VSWR overload transistor Q6 can be activated at the same pointat which the VSWR alarm becomes active or the VSWR overload circuit can be disabled by turningR37 completely counterclockwise.
DEDANIELSELECTRONICS VHF Amplifier Instruction Manual VT-3 132 - 174 MHz3-113VT-3/150 AMPLIFIER ALIGNMENT3.1GeneralConnections to the power supply, alarm and transmit enable lines (ENA), are clearly marked on theamplifier 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 signalinterconnection (see the Transmitter Main Board Manual for details). For complete transmitteralignment, the Transmitter Main Board, Synthesizer, Amplifier, and Audio Processor should betuned 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 bemade without removing the amplifier cover. However, in the case of a complete amplifieralignment, the amplifier should be separated from the Transmitter Main Board and the amplifiercover removed to expose all amplifier circuitry. All jumpers and test points are clearly marked.3.2 Repair NoteThe VT-3/150 Amplifier is mainly made up of surface mount devices which should not be removedor replaced using an ordinary soldering iron. Removal and replacement of surface mountcomponents should be performed only with specifically designed surface mount rework and repairstations complete with ElectroStatic Dissipative (ESD) protection.When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place ofmanual vacuum type desoldering tools when removing jumpers. This will help prevent damage tothe circuitboards.3.3 Recommended Test Equipment ListAlignment of the transmitter requires the following test equipment or its equivalent.Dual Power Supply:Regulated +9.5 Vdc at 0.1 A.Regulated +13.8 Vdc at 2 A - Topward TPS-4000Oscilloscope / Multimeter:Fluke 97 ScopemeterCurrent Meter:Fluke 75 multimeterRadio communications test set :Marconi Instruments 2955RVSWR 3:1 mismatch load:JFW 50T-035-3.0:1coaxial test cable set three 50 Ω cables of incremental length 20 to 40 cmAlignment Tool:Johanson 4192
DEDANIELSELECTRONICS3-2VHF Amplifier Instruction Manual VT-3 132 - 174 MHz2It is recommended that the radio communications test set be frequency locked to an externalreference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set towithin its ±1 ppm frequency tolerance.3.4Printed Circuitboard Numbering ConventionTo ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted aprinted circuitboard (PCB) numbering convention in which the last two digits of the circuitboardnumber represent the circuitboard version. For example:• PCB number 43-9120 10 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.3.5Standard Factory Settings and Jumper ConfigurationThe 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 installedOutput power alarm - linear output• Jumper JU2:installedOutput power alarm - open collector output• Jumper JU3:installedAntenna VSWR alarm - open collector output• Jumper JU4: not installedAntenna VSWR alarm - linear output3.6 VT-3/150 Amplifier Alignment3.6.1 GeneralThe VT-3/150 Amplifier is a frequency sensitive module that is factory assembled to operate in oneof two frequency bands: 132 to 150 MHz or 150 to 174 MHz. The amplifier requires 7 dBm ofinput power and is continuously adjustable over the its power range of 2.0 to 8.0 Watts. TheVT-3/150 Amplifier provides Output Power and Antenna VSWR Alarm outputs which can beconfigured for open collector output or linear operation. The amplifier's output power level andalarm levels can be set without detaching the amplifier from the transmitter board. However, tochange the configuration of the output power alarm or the Antenna VSWR alarm, the VT-3/150Amplifier must be detached from the MT-3 Transmitter Board. Refer to page 4-2 "VT-3/150 VHFAmplifier Component Layout" for the location of solder jumpers JU1 to JU4.
DEDANIELSELECTRONICS VHF Amplifier Instruction Manual VT-3 132 - 174 MHz3-333.6.2VT-3/150 Amplifier AdjustmentThe Amplifier alignment consists of two adjustment procedures; (i) a general set up (section3.6.2.1) procedure which sets up the proper bias conditions for the RF transistors and (ii) the RFthreshold adjustments which set up the desired alarm threshold levels as well as the RF outputpower. The general alignment procedure is required following major repair operations, changes inRF 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 fineadjustments can be made in the field. Depending on user requirements, the RF alarm thresholdlevels should be checked whenever a significant change in operating frequency (± 0.5 MHz) ismade. As the antenna VSWR alarm is dependent on the output power alarm, the output poweralarm should always be set first. The order of adjustment should be:1) Set the desired output power alarm level (section 3.6.2.2).2) Set the output power (section 3.6.2.3).3) Set the desired Antenna VSWR alarm level (section 3.6.2.4).4) Set the desired overload condition level (section 3.6.2.5).Details for the alignment steps are outlined below. 3.6.2.1General Set-UpAll of the setup steps detailed below are performed at the factory as part of the initialTransmitter alignment. A general realignment of the Amplifier Module will be requiredunder the following conditions:(i) the nominal RF input power applied to the amplifier is changed from thatwhich the amplifier was intially set up for, and(ii) components, particularly the RF transistors Q1 and Q2, are replacedduring a repair operation.1. Connect the transmitter's antenna output connector to the type N input of the radiocommunications 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) fullycounterclockwise.3. Turn on the power to the transmitter.
DEDANIELSELECTRONICS3-4VHF Amplifier Instruction Manual VT-3 132 - 174 MHz44.Monitor the +9.5 Vdc and 13.8 Vdc supply current and adjust R7, the output poweradjustment, so that approximately 1 Amp is being drawn on the +9.5 Vdc line and1.3 Amps or less is being drawn on the 13.8 Vdc line. This should produceapproximately 8 Watts.5. If only a 6 or 7 watt output is obtained, adjust the low pass filter coil pairs L2/L3 andL1/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 outputso a pull-up resistor may be required on transmitter pin B26 if one is not alreadypresent.1.Adjust R7, the output power adjustment, to the output power at which the OutputPower Alarm is to be activated.2.Monitor transmitter pin B26, the Output Power Alarm line, and slowly turn R21, theoutput power alarm adjustment, clockwise until pin B26 goes low. The alarm is nowset 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 +7.5Vdc for full transmitter output power.5. Turn R7, the output power adjustment, fully counterclockwise. The voltmeter shouldread approximately +3 Vdc.6.Disconnect the voltmeter.
DEDANIELSELECTRONICS VHF Amplifier Instruction Manual VT-3 132 - 174 MHz3-553.6.2.3 Output Power1. Turn R7, the output power adjustment, clockwise to the desired transmitter outputpower.3.6.2.4 Antenna VSWR Alarm (Reverse Power)Open Collector Output *note: the antenna VSWR alarm output is factory configured as an open collectoroutput so a pull-up resistor may be required on transmitter pin Z26 if one is notalready present. The output power alarm must be set first before the antenna VSWRalarm can be set.1. Disconnect the radio communications test and terminate the transmitter with the 3:1mismatch load.2.Monitor pin Z26, the Antenna VSWR Alarm line, and turn R36 fullycounterclockwise. Pin Z26 should be high. Slowly turn R36 clockwise until pinZ26 is pulled low. Put the 50 ohm load back on again, Pin Z26 should go high. Thereverse 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 the3:1 mismatch load.4.Adjust R36, the VSWR alarm adjustment, so that the voltmeter indicates +5 Vdc for a3:1 mismatch.5. Put the 50 ohm load back on again. The voltmeter should read approximately 0 Vdc.6.Disconnect the voltmeter.
DEDANIELSELECTRONICS3-6VHF Amplifier Instruction Manual VT-3 132 - 174 MHz63.6.2.5 Antenna VSWR Overload1.Disconnect the radio communications test set and so that the amplifier is terminatedwith 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 returnto the previous level.3.6.2.6Procedure Verification1.Verify that the current drawn from the +13.8 Vdc supply is less than 1.5 A and fromthe +9.5 Vdc supply is less than 1.2 A when transmitting full RF output power (8Watts).2. Turn off the power to the transmitter.
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DEFAULT JUMPERVICTORIA B.C .DATE.:DWG No:TITLE:DDANIELS ELECTRONICS BOARD No.:DWG REV DATE:43-932611MARCH 8, 1994COMPONENT NOT INSTALLEDVT-3/150 AMPLIFIER SM LAYOUT (LOW POWER)9326AS149R949R9150p49K91.5uH49K910n10n100n 49K949K91K10n10K10K100n10K10n1.5uH331723317227K41K1K49K910K1K49K949K910n10n10K10nF10KMC49K910K10K27K41K1K4K5310K27K4100n10n1nF30R10.18uH0.18uHFB10.18uH1nF100nF18nF18nF18nF18nF4.7uF10nFBYD17J100nF49K9MMBD701MMBD701BC817-25BC817-25MBZ5233BPZT2222APZT2222A50K50K50K50KD6C20R18L6R19C21C19C18R20C22R22R23R24R32R44C24R43R42R35R34U2U3R40C26TL2TL3R16R17D7C25R33L7R39R41Q6R26R27R30R11R9C12C15C17Q4R31R28 R29U1R10R5C13C14D1R6R8R7R25Q3Q5R38R37R36R2133172R1C1C2C3C4L1L3L2C918nFQ2D5P06VR4D3D4C6C5MCMCC10C7C8C11JU1JU2JU3JU4 3K48221KC2310nR14 10K150p49K9VT-3/150 AMPLIFIER SM DESIGNATION (LOW POWER)9326AS2BYD17JR2R3178R178RJU5VT-3/150 AMPLIFIER SM LAYOUT (HIGH POWER) 9326AS3 100nF10nFSELECTSELECT1nFSELECTSELECT49K949R9 150pF49K91.5uHMMBD701SELECTSELECTD5C16R15R13L5C31 C33C29C37C38R12TL1C27C28C32C34VT-3/150 AMPLIFIER SM DESIGNATION (HIGH POWER) 9326AS4SELECTC36COMPONENT INSTALLED ON BOTTOM OF BOARDCOMPONENT MOUNTED ON CASEM2.5 x 6 SCREWM3 x 8 SCREWVT-3/150 AMPLIFIER TH LAYOUT (LOW POWER) M3 x 8 CAP SOCK SCREWNOTE Q1 MOUNTED ON CASE WITH LEADS INSERTED TO BOTTOM OF BOARD150nHL4TL2TL3TL5TL4Q1IRF9540D21N5402VT-3/150LOW PASSFILTER ASSEMBLYVT-3/150 AMPLIFIER TH DESIGNATION (LOW POWER) 9326A5MHW607 SELECT2.2nFC39150nH FB347uFC30 +FB2150nH10RL1119nHL8L9L1019nHR45 C35SELECTMRF262TL1VT-3/150 AMPLIFIER TH LAYOUT AND DESIGNATION (HIGH POWER) 9326A6M3 x 6 CAP SOCK SCREW4-24.1 VT-3/150 VHF Amplifier Component Layout DE DANIELSELECTRONICS VHF Amplifier Instruction Manual VT-3 132 - 174 MHzVT3AMPM1
R6 POWER27k4 2 - 8 Watts392k 2 - 5 WattsPower Range SelectionDE DANIELSELECTRONICSVICTORIA B.C.DE DANIELS ELECTRONICS 4.2 VT-3/150 VHF Amplifier Schematic Diagram TITLE: VT-3/150 VHF AMPLIFIER SCHEMATIC DIAGRAM4-3VHF Amplifier Instruction Manual VT-3 132 - 174 MHzJ2, JU5DWG No: VT3AMPM2A DWG REV DATE: 10 DECEMBER 1995DATE: 4 MARCH 1994FORWARDPOWERALARMC39FORWARDOUTPUT ALARMADJUSTVSWROUTPUT ALARMADJUSTOVERLOAD ADJUSTOUTPUT POWER ADJUSTLB = LOW BANDHB = HIGH BANDU4TL5, TP5R45Q7L11FB3, FIL5D7DWN BY: REX WONGBOARD REV: 1.1BOARD No: 43-932611APRVD:---------------------------------------------UNUSED REFERENCE DESIGNATORSHIGHEST REFERENCE DESIGNATORSVSWRALARM+13.8 VDCLOW / HIGH BANDJ1SMBRF IN (1 mW)J2TYPE N JACKRF OUTR910k0C1510nFR750kD1MBZ5233BR54k53R1010k0C1210nF DS D5P06VQ2TL5R3178RR130R1R449k9D2IN5402LPFFIL1AMPLIFIER ENABLE I/PLPFFIL2+9.5 VDCLPFFIL5*+13.8 VDCLPF DS Q1IRF9540R83k48R6SELD4BYD17JR2178RD3BYD17JL51.5uH R1349k9C16150pFR1249k9TL149R9R15R351k00R3449k9 C2610nFQ5PZT2222A R4410k0R3650kC25150pFR3349k9R421k00R4327k4C2310nF 6 5 87 4U2bMC33172L71.5uHD7MMBD701R1110k0TL2R1649R9R1749R9R2249k9R2010k0R2150kR1949k9C2110nFC20150pFR1849k9L61.5uHD6MMBD701Q4BC817-25R2910k0 R251k00R2827k4Q6BC817-25 R4110k0 R391k00R40221kR2749k9C1710nFR2649k9R3049k9Q3PZT2222AR3110k0R3750kR381k00JU1JU4R241k00 2 3 1 U3a 2 3 1 U1a 2 3 1 U2a 6 587 4U3bMC33172C18100nF C1910nFC13100nFC1410nF6 5 4 7 8U1bMC33172LPFFIL3 JU2LPFFIL4 JU3C24100nFTL3C11100nFC918nFL3180nHC518nF + C64.7uFC418nFL2180nHL1180nHL4150nHC218nFC318nFMHW 607 6U4MHW607FB1C11nFQ7MRF262+13.8 VDCL10150nHL9150nH51pF LB/24pF HBC31FB2C35SELECTC3856pF LB/220pF HBFB3* +C3047uFC2810nFC27100nFL819nHL1119nHC3647pF LB/43pF HBC3747pF LB/36pF HBC3368pF LB/51pF HBR4510RD5MMBD701R3210k0TP3TP4TP5TP2TP1C81nFC7100nFC1010nFR2349k9C2210nFR1410k0C3420pF LBC325.6pF LBC291nFSWITCHED +9.5VSWITCHED +9.5VTO ALL SWITCHED +9.5VSWITCHED +9.5VSWITCHED +9.5VSWITCHED +9.5V C392.2 nF JU52 4 513OVERLOAD
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DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz4-554.3VT-3/150 VHF Lowpass Filter Component Layout4.4 VT-3/150 VHF Lowpass Filter Schematic Diagram
DEDANIELSELECTRONICS4-6VHF Amplifier Instruction Manual VT-3 132 - 174 MHz6This Page Intentionally Left Blank
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz5-115 PARTS LISTS5.1 VT-3/150 Amplifier Electrical Parts ListRefDesig Description Part No.C1CAP., SM, 1nF CER, 1206, C0G 1008-3B102K1GC2-C5CAP., SM, 18nF CER, 1206, X7R 1008-4B183K5RC6CAP., SM, 4.7µF TANT., 10%, 16V1055-5B475K16C7CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC8CAP., SM, 1nF CER, 1206, C0G1008-3B102K1GC9CAP., SM, 18nF CER, 1206, X7R 1008-4B183K5RC10CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC11CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC12CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC13CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC14, C15CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC16CAP., SM, 150pF CER, 1206, C0G1008-2B151J1GC17CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC18CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC19CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC20CAP., SM, 150pF CER, 1206, C0G1008-2B151J1GC21-C23CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC24CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC25CAP., SM, 150pF CER, 1206, C0G1008-2B151J1GC26CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC27CAP., SM, 100nF CER, 1206, X7R 1008-5B104K5RC28CAP., SM, 10nF CER, 1206, X7R 1008-4B103K5RC29CAP., SM, 1nF CER, 1206, C0G1008-3B102K1GC30CAP., 47µF DIP. TANT., 20%, 35V 1054-6M476M35C31CAP.,SM, 51pF PORCEL., 5% 500V 1036-1B2510J5 (132 - 150 MHz)C31CAP.,SM, 24pF PORCEL., 5% 500V 1036-1B2240J5 (150 - 174 MHz)C32CAP.,SM, 5.6pF PORCEL., ±0.25pF 500V 1036-0B2569C5 (132 - 150 MHz)C32CAP.,SM, NOT INSTALLED NOT INSTALLED (150 - 174 MHz)C33CAP.,SM, 68pF PORCEL., 5% 500V 1036-1B2680J5 (132 - 150 MHz)C33CAP.,SM, 51pF PORCEL., 5% 500V 1036-1B2510J5 (150 - 174 MHz)C34CAP.,SM, 20pF PORCEL., 5% 500V 1036-1B2200J5 (132 - 150 MHz)C34CAP.,SM, NOT INSTALLED NOT INSTALLED (150 - 174 MHz)C35CAP., 330pF METAL CLAD,1% 250V 1046-2A331FDB (132 - 150 MHz)C35CAP., 270pF METAL CLAD, 1% 250V 1046-2A27TFDB (150 - 174 MHz)C36CAP.,SM, 47pF PORCEL., 5% 500V 1036-1B2470J5 (132 - 150 MHz)C36CAP.,SM, 43pF PORCEL., 5% 500V 1036-1B2430J5 (150 - 174 MHz)C37CAP.,SM, 47pF PORCEL., 5% 500V 1036-1B2470J5 (132 - 150 MHz)C37CAP.,SM, 36pF PORCEL., 5% 500V 1036-1B2360J5 (150 - 174 MHz)C38CAP.,SM, 56pF PORCEL., 5% 500V 1036-1B2560J5 (132 - 150 MHz)C38CAP.,SM, 220pF PORCEL., 5% 200V 1036-2B2221J2 (150 - 174 MHz)C39CAP., 2.2nF FILM, MMK5,10%,63V 1016-3A222K63D1 DIODE, MBZ5233B 6.0V ZENER, SOT-232102-MBZ5233BD2 DIODE, IN5402 3A RECT, DO-201AD2001-1N540200D3, D4 DIODE, BYD17J RECTIFIER, SOD-872101-BYD17J00D5 DIODE, MMBD701 HOT CARRIER, SOT-23 2105-MMBD7010D6, D7 DIODE, MMBD701 HOT CARRIER, SOT-23 2105-MMBD7010
DEDANIELSELECTRONICS5-2VHF Amplifier Instruction Manual VT-3 132 - 174 MHz2RefDesig Description Part No.FB1 FERRITE BEAD, SM, 43 MIX 1812 PKG 1213-43181200FB2, FB3 FERRITE BEAD, 64MIX 3X3.5mm OD 1210-64030350FIL1-FIL5FILTER, EMI PI/5500pF, 8-32 UNC 1302-P552D10DJ1 CONNECTOR, SMB, JACK,2 HOLE FLANGE 5120-J2SC01BGJ2 CONNECTOR, N JACK PANEL MNT, C/SNK 5184-10923011L1-L3 INDUCTOR, SM., 180nH 20%, 1812 1255-2GR1800ML4 CHOKE, RF/MOULD., 150nH 10%, .37 1251-2B00R15KL5 INDUCTOR, SM, 1.5µH 10%, 1812 1255-3G1R500KL6, L7 INDUCTOR, SM, 1.5µH 10%, 1812 1255-3G1R500KL8 COIL, 1.5 TURNS, 18AWG, 3.83mmID 1220-1T501812L9 CHOKE, RF/MOULD., 150nH 10%, .25 1251-2A00R15KL10 CHOKE, RF/MOULD., 150nH 10%, .37 1251-2B00R15KL11 COIL, 1.5 TURNS, 18AWG, 3.83mmID 1220-1T501812LPF1LPF, ASSEMBLY VT-3/150 AMPLIFIER A21-LPF3/150PCBPCB, VT-3/150 TX AMPLIFIER 4321-15932611Q1MOSFET, IRF9540 P-CHANNEL, TO-220 2044-IRF95400Q2MOSFET, D5P06V P-CHAN., DPAK 2144-D5P06V00Q3TRANSISTOR, PZT2222A NPN, SOT-223 2120-PZT2222AQ4TRANSISTOR, BC817-25 NPN, SOT-23 2120-BC817025Q5TRANSISTOR, PZT2222A NPN, SOT-223 2120-PZT2222AQ6TRANSISTOR, BC817-25 NPN, SOT-23 2120-BC817025Q7 TRANSISTOR, MRF262 VHF, TO-220 2025-MRF26200R1RES., SM, 30R1 1206, 1%,100ppm 1150-1B30R1FPR2, R3RES., SM, 178R 1206, 1%,100ppm 1150-2B1780FPR4RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR5RES., SM, 4k53 1206, 1%, 100ppm 1150-3B4531FPR6RES., SM, 27k4 1206, 1%, 100ppm 1150-4B2742FP(Default)R6RES., SM, 392k 1206, 1%, 100ppm 1150-4B3922FP (Exciter for VT-30)R7POT., SM, 50k 12 TURN, SIDE ADJUST 1172-M30503X5R8RES., SM, 3k48 1206, 1%, 100ppm 1150-3B3481FPR9-R11RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR12, R13RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR14RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR15-R17RES., SM, 49R9 1206, 1%, 100ppm 1150-1B49R9FPR18, R19RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR20RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR21POT., SM, 50k 12 TURN, SIDE ADJUST 1172-M30503X5R22, R23RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR24, R25RES., SM, 1k00 1206, 1%, 100ppm 1150-3B1001FPR26, R27RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR28RES., SM, 27k4 1206, 1%, 100ppm 1150-4B2742FPR29RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR30RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR31, R32RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR33, R34RES., SM, 49k9 1206, 1%, 100ppm 1150-4B4992FPR35RES., SM, 1k00 1206, 1%, 100ppm 1150-3B1001FPR36, R37POT., SM, 50k 12 TURN, SIDE ADJUST 1172-M30503X5
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz5-33RefDesig Description Part No.R38, R39RES., SM, 1k00 1206, 1%, 100ppm 1150-3B1001FPR40RES., SM, 221k 1206, 1%, 100ppm 1150-5B2213FPR41RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR42RES., SM, 1k00 1206, 1%, 100ppm 1150-3B1001FPR43RES., SM, 27k4 1206, 1%, 100ppm 1150-4B2742FPR44RES., SM, 10k0 1206, 1%, 100ppm 1150-4B1002FPR45RES., 10R METAL FILM, 5%, 0.5W 1101-1A0100JPTL1 COAX, DIRECTIONAL COUPLER 0.5" 7496-30CR005TTL2, TL3 COAX, DIRECTIONAL COUPLER 0.5" 7496-30CR005TTL5 COAX, CONFORMABLE 31.5mm, 50 OHM, 0.083 7482-5024T083U1-U3I.C., MC33172 DUAL OP AMP, S0-8 2302-33172N08U4AMP, RF,MHW607-1,7W,136-154MHz 2256-MHW60701 (132 - 150 MHz)U4AMP, RF,MHW607-2,7W,146-174MHz2256-MHW60702 (150 - 174 MHz)5.2 VT-3/150 Low Pass Filter Electrical Parts ListRefDesig Description Part No.C1CAP., SM, 30pF PORCEL., 5%, 500V 1036-1B2300J5C2-C4CAP., SM, 47pF PORCEL., 5%, 500V 1036-1B2470J5C5CAP., SM, 30pF PORCEL., 5%, 500V 1036-1B2300J5L1 COIL, 55nH 3.0 TURNS, 18AWG, 6.70mm ID 1220-3T001822L2, L3 COIL, 60nH 3.0 TURNS, 18AWG, 6.70mm ID 1220-3T001822L4 COIL, 55nH 3.0 TURNS, 18AWG, 6.70mm ID 1220-3T001822PCB PCB, LPF VT-3/150, UT-3/400 AMP 4321-169317125.3 VT-3/150 Amplifier Mechanical Parts ListDescription Part No. Qty.CASE, MT-3 VHF/UHF AMPLIFIER, ALUMINUM3702-66102130 1HEATSHRINK, 1/8" DIA, RED, 1" LENGTH CONSUMABLE 1INSULATOR, THERM. COND. TO-220 5622-1T220701 1LABEL, MTL/PE, VT-3/150 AMP ID 3508-21002010 1LID, CASE MT-3 AMPLIFIER, ALUMINUM3702-66102151 1 SCREW, M2 X 6, PAN/PHILLIPS,A25812-2M0PP06S2SCREW, M2 X 4, PAN/PHIL., S/S5812-2M0PP04S10SCREW, M2.5 X 6, PAN/PHIL., S/S5812-2M5PP06S3SCREW, M3 X 6, FLAT/PHIL., S/S5812-3M0FP06S4SCREW, M3 X 8, PAN/PHIL., S/S5812-3M0PP08S9
DEDANIELSELECTRONICS5-4VHF Amplifier Instruction Manual VT-3 132 - 174 MHz4Description Part No. Qty.SCREW, M3 X 8, CAP SOCK-M2.5, S/S5812-3M0SA08S 3SCREW, M3 X 8, CAP SOCK-M2.5, S/S5812-3M0SA08S 2SET SCREW, M3 X 3, HEX SOCKET, A2 5817-3M0AC03S 1SHOULDER WASHER, M3 0.24" OD, NYLON 5674-120N2440 1TUBING, TFE-260C, 22AWG,Thin 5mm 7610-260C22TW 1TURRET TERMINAL, 4-40 0.188L, Tn 5053-144M188T 1WIRE, PVC/STRANDED 16AWG, RED, 70 mm 7110-16S26302 1
DEDANIELSELECTRONICSVHF Amplifier Instruction Manual VT-3 132 - 174 MHz6-16REVISION HISTORYISSUEDATEREVISION1 Jul 97 First Issue.
DEDANIELSELECTRONICS6-2VHF Amplifier Instruction Manual VT-3 132 - 174 MHzISSUEDATEREVISION

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