Codan Radio Communications AMP-3A130 AMP-3A130-25 User Manual IM71 AMP3A1302

Codan Radio Communications AMP-3A130-25 IM71 AMP3A1302

Users manual

DANIELSELECTRONICS LTD.TMMT-3 RADIO SYSTEMS25W AM POWER AMPINSTRUCTION MANUALAMP-3118 - 138 MHzCovers Model: AMP-3A130-25-00Copyright © 2002 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.Printing Date: Nov 2002 Daniels Electronics Ltd.Issue Date: Nov 2002 Previous Issue Date: N/A Victoria, BCIssue: 1Previous Issue: N/ADocument No.: IM71-AMP3A130-25 PRINTED IN CANADA
DANIELSELECTRONICS LTD.TMii 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25NOTE: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.
RF Exposure Warning S=PG4πR2RF 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 GHz 1; 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: 6.0 m (19.7 ft) when configured with 25 W AM PA (at 90% modulation) 2.4 m (7.9 ft) standalone (i.e. no PA) 4 W AM TX (at 90% modulation) C. The following power density formula has been utilized in determining minimum safe distances: where: S = Power density (in appropriate units, e.g. W/m2 ) P = Power input to the Antenna (in appropriate units, e.g., W) 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., m) 1Minister of Public Works and Government Services, Canada 1999, Cat. H46- 2/ 99- 237E, ISBN 0- 662- 28032- 6 2ANSI/IEEE C95.1–1992, Copyright 1992 by the Institute of Electrical and Electronics Engineers, Inc., New York, New York 10017
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 iiiTABLE OF CONTENTS Page1 GENERAL................................................................................................................1-11.1 Introduction....................................................................................................1-11.2 Performance Specifications.............................................................................1-11.3 Physical Specifications...................................................................................1-22 THEORY OF OPERATION.....................................................................................2-12.1 General............................................................................................................2-12.2 Control Board Circuitry .................................................................................2-12.3 RF Amplifier Circuitry...................................................................................2-22.4 Printed Circuit board Numbering Convention................................................2-33 INSTALLATION AND SITE OPERATION...........................................................3-14 AMPLIFIER ALIGNMENT.....................................................................................4-14.1 Recommended Test Equipment List ..............................................................4-14.2 RF Amplifier Board Alignment......................................................................4-34.3 Control Board Alignment ...............................................................................4-55 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS ...........................................5-15.1 Rack Mounting Positions...............................................................................5-15.2 RF Power Amplifier Block Diagram ..............................................................5-25.3 RF Power Amplifier Exploded View..............................................................5-35.4 RF Power Amplifier Board - Component Layout ........................................5-45.5 RF Power Amplifier Board - Schematic........................................................5-55.6 Control Board - Component Layout..............................................................5-65.7 Control Board - Schematic..............................................................................5-76 PARTS LISTS ..........................................................................................................6-16.1 RF Power Amplifier Board Electrical Parts List............................................6-16.2 RF Power Amplifier Board Mechanical Parts List ........................................6-36.3 Control Board Electrical Parts List.................................................................6-46.4 Control Board Mechanical Parts List.............................................................6-77 REVISION HISTORY..............................................................................................7-1
DANIELSELECTRONICS LTD.TMiv 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 1-11 GENERAL1.1 IntroductionThe AMP-3A130-25 provides the final stage of RF amplification and filtering for the AM amplifierAMP-3A130-25, 118 - 138 MHz family. The amplifier covers 118 - 138 MHz with continuouslyadjustable 10.0 to 25.0 W of output power.The amplifier is packaged in the compact Eurostandard (5"h x 2.8"w x 7.5"d) housing, and isrobustly designed for mountain top or transportable applications. The amplifier modules use highreliability components and each is accompanied with a complete operational test report on delivery.1.2 Performance SpecificationsFrequency: 118 to 138 MHzOutput Power: 10-25 Watts Continuous (set by VT-3A exciter)Output Impedance: 50 ΩSpurious & Harmonics: ≤ -80 dBcDistortion ≤ 5% at 30% modulation≤ 10% at 90% modulation @ 25ºCOperating Voltage: +24 to 32 Vdc (28.0 Vdc Nominal)Transmit Current: ≤ 3.0 A @ 25WStandby Current: Mode 1 & 2: ≤ 2 mA (PTT or RF signal switched)Mode 3: ≤ 200 mA (Continuous)Load Mismatch Protection: 20:1 VSWR at all phase anglesThermal Protection: Thermal interlock disables at 80oC (175oF)Duty Cycle: 100%Operating Temperature: -30oC to +60oC (-40oC to +60oC Optional)Operating Humidity: Up to 95% R.H. @ 25oCFront Panel Indicators: RF PowerHigh VSWROverloadOver TemperatureExciter VT-3A130, 2.5W output for 25WIndustry Canada Approval: TBAFCC Approval: TBA
DANIELSELECTRONICS LTD.TM1-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-251.3 Physical SpecificationsRF Connectors: Type N StandardCorrosion Prevention: Anodized aluminum construction.Stainless steel hardware.Physical Dimensions: Width: Height: Depth:14.2 cm (5.6") 13.1 cm (5.16") 19 cm (7.5")Weight: 2.4 kg (5.5 lb)Features: • Heavy Duty Aluminum Heatsink• Thermal switched Fan (at +40˚C)• Outputs of operating status signals: -RF Power - High VSWR
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 2-12 THEORY OF OPERATION
DANIELSELECTRONICS LTD.TM2-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-252.3 RF Amplifier Circuitry
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 2-32.4 Printed Circuit board Numbering ConventionTo ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted aprinted circuit board (PCB) numbering convention in which the last two digits of the circuit boardnumber represent the circuit board version. For example:• PCB number 43-912010 indicates circuit board version 1.0;• PCB number 50002-02 indicates circuit board version 2 (no decimal versions)All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
DANIELSELECTRONICS LTD.TM2-4 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 3-13 INSTALLATION AND SITE OPERATIONThe AMP-3 RF power amplifier is approved for operation with the VT-3A130 exciter. A completeM3 subrack shipped directly from the factory is normally set to the appropriate options and outputpower calibration as requested by the customer. These units require no tuning.For AMP-3 amplifiers shipped separately from the MT-3 racks, install as outlined:1. Connect the output of the exciter to the input of the AMP-3 Amplifier with the cableprovided.2. Connect the PTT control signal from subrack to the PTT input of the power amplifier if thePTT activation mode is selected.3. Connect the antenna system, key the transmitter and check the LED status indicators. The LED indicators will only illuminate when the power amplifier is keyed and are defined asfollows:A. RF Power - indicates that a preset RF power level is present at the power amplifieroutput. The threshold level is internally adjustable for various RF output levelsover the 10-25 watt range (factory set at 10 W.)B. High VSWR – Alarm indicating that the load impedance mismatch is high. Thethreshold level is internally adjustable from 2:1 to infinite:1 (factory set at 3:1.)C. Overload – (VSWR Overload Alarm) indicates that the RF load impedancemismatch is extremely high. Under this condition, the DC supply voltage(nominally +28.0 Vdc) to the PA is interrupted and the status is locked until the RFsignal from the exciter is removed. The factory threshold level is set when the loadterminal is open.D. Over Temp - (Over Temperature Alarm) a thermostat control switch interrupts theDC supply voltage to the PA when the RF transistor body temperature exceeds175 ˚F (80 ˚C). Utilizing circuit hysterisis, the thermostat will reset at 167 ˚F(75 ˚C).The fan is activated automatically when the RF transistor body temperature reaches approximately+40oC. The fan's operating temperature range is -20oC to +60oC. It will not operate when theambient temperature is below -20oC.
DANIELSELECTRONICS LTD.TM3-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 4-14 AMPLIFIER ALIGNMENT4.1 Recommended Test Equipment ListTo align the transmitter the following test equipment is recommended:M-2/M3 rack/system monitorPower supply: regulated 28.0 volt DC @ 5 AWattmeter: (e.g. Bird 4421)Spectrum Analyzer (e.g. IFR 7550)Alignment Tool, Johanson type 8777Daniels Extender Card, EC-48R or EC-48UKSWR Meter, 50 W 200 MHzPower pad 50 ohm splitter (e.g. Socal)Dummy Load 50Ω /50WDummy Loads, 2:1 and 3:1, /50WCurrent Meter (5A)DC Voltmeter
DANIELSELECTRONICS LTD.TM4-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25Figure 1 RF Power Amplifier Board Alignment Locations
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 4-34.2 RF Amplifier Board AlignmentRefer to Figure 1 for location of adjustment capacitors.This procedure assumes the use of 2 separate subracks with the exciter transmitter in system A andthe 25W power amplifier in system B.1. Remove the top extrusion cover housing from the exciter, set the exciter frequency at128MHz (channel number 1200) and install the exciter in the system A of the M-2or M-3 subrack. Remove all receivers from the subrack assembly (this will facilitatecalibration access).2. Install the extender card in the designated location for the AMP3A130-25 PowerAmplifier (System B). Connect the RF output of the exciter to the input of thepower amplifier module and the output to a Communications Service Monitor. 3. Apply +13.8Vdc to the subrack system A and +28Vdc to the subrack system B,activate the exciter transmitter and the power amplifier.4. Turn the power adjustment potentiometer R19 in the exciter to achieve approximate25W RF output. R19 is labeled "RF Level" and is accessed through the bottom ofthe exciter transmitter amplifier case.5. Monitor the RF power output and adjust C2, C3 and C10 on the RF power amplifierboard for maximum output power and minimum current. Check that the RF outputpower is within 25W±1dBc (app. 20%) when the exciter frequency is set to 118,128 and 138MHz (channel number 0000, 1200 and 2400). Note that C2 and C3 aremore effective in adjusting the output "flatness" over frequency.6. Apply 1k/-25dBm AF signal into the balanced input of the exciter and adjust thepotentiometer R35 in the exciter to get 30% modulation. R35 is accessed throughthe bottom of the exciter transmitter amplifier case, labeled Audio Level. Increasethe audio signal level to –8dBm, the modulation level should be 90±5% and theaudio distortion should be below 10%. Adjust C10 on the RF power amplifierboard for minimum audio distortion and maximum RF output power.7. Confirm that the audio distortion is below 10% at 90% modulation and the RFoutput power is within 25W±1dB at 0% modulation when the exciter frequency isset to 118, 128 and 138MHz, respectively. Go back to step 4 if these specificationsare not met.
DANIELSELECTRONICS LTD.TM4-4 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25Figure 2 Control Board Alignment Locations
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 4-54.3 Control Board Alignment1. After completion of the amplifier alignment, using the RF Level potentiometer in theexciter, set the RF output of the power amplifier to 10 watts. LED1 (labeled RFPower) should be on, otherwise adjust pot R1 until LED1 is just visible. Thisthreshold may be adjusted to any RF power output level for the AMP-3 (10 –25W).2. Disconnect the power amplifier RF output and terminate it with the 3:1 mismatchload. When activating the exciter, the LED2 (labeled High VSWR) should be on,otherwise adjust pot R19 until LED2 turns on.3. Terminate the power amplifier RF output with a 50Ω load. LED2 should be off, ifnot, slightly turn the pot R19 counter-clockwise until the LED2 is off and check thatLED2 turns on when the power amplifier RF output is terminated with the 3:1mismatch load.4. Disconnect the RF terminal on the load, so that the power amplifier load is open.Once the exciter is activated, verify that LED3 (labeled Overload) is on and thepower amplifier has no RF output power. If this is not the case, shut down theexciter, adjust R18 and reactive the exciter. This confirms that antenna VSWRoverload protection works properly.
DANIELSELECTRONICS LTD.TM4-6 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 5-15 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS5.1 Rack Mounting Positions8843M125 WATT POWER AMPLIFIER
DANIELSELECTRONICS LTD.TM5-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-255.2 RF Power Amplifier Block DiagramPOWER AMPLIFIER BOARDRF INPUT SAMPLEREAR CONNECTORLOGIC CONTROLLERDriverPWR SWITCHCONTROL BOARD+28VDCI/P ATT.RF POWEROVER TEMPOVERLOADHIGH VSWRLED ARRAYRF INPWR SupplyFRONT PANELPTT REMOTE POWERO/P FAILRF OUT DIR. COUPLERPOWER DETECTOROUTPUT MATCHINGNETWORKINPUT MATCHINGNETWORKLOW PASS PILTEROFFON REMOTE VSWRCOOLING FANTHERMOSTATAMP3A130M2
CCCPOWER AMPLIFIER FRONT PANEL HEAT SINKFRONT BLOCKBACK BLOCKRF AMPLIFIER BOARDPOWER AMPLIFIER SHIELDCONTROL BOARDPOWER AMPLIFIER 14HP CASESlide PCB into slot 4DCCDCCCEEEEEGGEEABBAAEEEEACOOLING FAN CONNECTORInstructions1. Remove the 4 Front Panel screws (A).2. Remove the Power Amplifier Case.3. Unplug the Cooling fan connector.4. Remove the 4 Front Panel screws (A) holding the Front Panel to the Front Block.5. To remove the Sensor Board, remove the 4 screws (E) on the Sensor Board, and unplug the connectors which connct the Sensor Board and RF Amplifier Board.6. To remove the RF Amplifier Board, remove 10 screws (E) and lockwashers (F) holding the RF Amplifier Board to the heat sink, and 2 cap screws (G) holding the RF transistor to the heat sink. 7. To remove the Front Block, remove 2 screws (D) holding the Front Block to the heat sink.8. To remove the Back Block, remove the 2 screws (D) holding the Back Block to the heat sink.9. To remove the Cooling Fan, remove the 2 screws (B), lockwachers (I) and nutes (H).10. Assembly is the reverse of step1 through 8.DDEEHIIHAAAEFFFFFFFFFFAMP3A130M35.3 POWER AMPLIFIER EXPLODED VIEW25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 5-3
5.4 RF Power Amplifier Board - Component Layout5-4 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25
AABBCCDDEEFFGGHHIIJJKKLLMMNNOOPP1 12 23 34 45 56 67 78 89 91 10 0DANIELSELECTRONICS LTDTM25W AM Power AMP Instruction Manual IM71-AMP3A130-25 5-55.5 25W AM Power AMP RF Amplifier Board Schematic
VICTORIA B.C .PCB No: 50104-04DWG REV DATE: DATE: 12 JULY 2002DWG No: 50104TITLE: 25W AM POWER AMPLIFIER CORTROL BOARD OUTLINEDANIELSELECTRONICS LTD.TM5.6 Control Board - Component Layout 5-6 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25
AABBCCDDEEFFGGHHIIJJKKLLMMNNOOPP1 12 23 34 45 56 67 78 89 91 10 0DANIELSELECTRONICS LTDTM5.7 25W AM Power Amp Control Board Schematic25W AM Power Amp Instruction Manual IM71-AMP3A130-25 5-7
This Page Intentionally Left Blank25W AM Power Amplifier Instruction Manual IM71-AMP3A130-255-8
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 6-16 PARTS LISTS6.1 RF Power Amplifier Board Electrical Parts ListRefDesig Description Part No.
DANIELSELECTRONICS LTD.TM6-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25RefDesig Description Part No.
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 6-3RefDesig Description Part No.6.2 RF Power Amplifier Board Mechanical Parts ListDescription Part No. Qty.BACK BLOCK, DWG NO. 10596-02 TBA 1CAP SCREW, M3x8 HEX SOCK-M2.5 5816-3M0SH08S 2FRONT BLOCK, DWG NO. 10595-02 TBA 1HEAT SINK, DWG NO. 10594-03 TBA 1LID, LPF SHIELD, DWG NO. 10601-01 TBA 1LOCKWASHER, M3, SPLIT, A2 STEEL 5814-3M0LK00S 10PVB, TBA 1SCREW, M3 x 8, PAN/PHIL, A2 5812-3M0PP08S 10SCREW, M3 x 10, FLAT/PHIL, A2 TBA 4SCREW, M3 x 6, FLAT/PHIL, A2 5812-3M0FP06S 8WALL, LPF SHIELD, DWG NO. 10600-01 TBA 1TAB, GROUND, M3,14.5mm L,BR/Ni, DWG 10067-01 3702-67802005 2
DANIELSELECTRONICS LTD.TM6-4 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-256.3 Control Board Electrical Parts ListRefDesig Description Part No.
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 6-5RefDesig Description Part No.
DANIELSELECTRONICS LTD.TM6-6 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25RefDesig Description Part No.
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 6-76.4 Control Board Mechanical Parts ListDescription Part No. Qty. Ref. DesigFUSE CLIP, RIVET MOUNT TBA 2PA FRONT PANEL, DWG 10582-03 TBA 1HANDLE/NAMEPLATE KIT, 28HP, GREY TBA 1FAN, 12VDC, 60X60X25mm, 20CFM TBA 1M33455-16, NIDECCONN., .100”, CRIMP HOUSING, 2CCT TBA 150-57-9402, MOLEX 1TERMINAL, CRIMP, FEM., 22-24,Au 5021-TF22B002 1 GUARD, FOR 60mm SQ. FAN, STEEL 6519-60602R0S 1 TUBING, TFE-260C, 8AWG T/W, CLR 7610-260C08TW 8.5” FUSE, 8 AMP FAST-BLO 5604-5GAGC080 1 F1CASE, 14HP RF PLUG-IN, MT-3 PA TBA 1 DWG 10581-03 GASKET, BeCu, 3FINGER, 71",CLIP 5630-12023250 1 SCREW, M4 X 35, PAN/PHIL., A2 5812-4M0PP35S 2 LOCKWASHER, M4, SPLIT,A2 STEEL 5814-4M0LK00S 2 NUT, M4, HEX, 6.9mm FLATS, A2 5813-4M0HX69S 2 NUT, PRESS,M2.5, 5.6mmOD, PC MNT 5833-T2M55615 2 SCREW, M3 x 8,OVAL C/S/PHIL,A2 5812-3M0VP08S 7 SCREW, M3 x 8, PAN/PHIL, A2 5812-3M0PP08S 4 SCREW, M2.5 x 10 PAN/PHIL, A2 5812-2M5PP10S 2
DANIELSELECTRONICS LTD.TM6-8 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank
DANIELSELECTRONICS LTD.TM25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25 7-17 REVISION HISTORYIssueiIssued Revised Details1 July 2002 First Issue i When a revision letter is assigned, it indicates that a revised issue has been released for in-house distribution only.
DANIELSELECTRONICS LTD.TM7-2 25W AM Power Amplifier Instruction Manual IM71-AMP3A130-25This Page Intentionally Left Blank

Navigation menu