Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual
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VHF 1-25W PCBs / Schematics / Parts Lists4-15 ZWG0130565-O 9180469V03 3.9VDC 12.5kHz 0VDC 20/25kHz 5VDC 0.75VDC0.75VDC 3VDC9180469V069180469V04 9180468v04 9180468V06 3VDC 6.8K R3107 9V3 R3135 1.2K 390 1 GND1 GND2 2 GND3 4 5 GND4 3 IN6 OUTR3115 FL3101 12R16R3117 27K Q3102Q3151 680 R3146 620nH L3111 620 R3108 R3118 6.8K R3111 12K C31015V_VHF_IF_1 GND24 1 IN2 OUT NU 2.2pFFL31113GND1 U3115-1CNTL 131 2VDD 14VSS7 DISCAUDIO_VHF_IF_1 15K R31320.1uF C3144 120pF C3143 C3139 C3141 0.1uF 0.1uF 131 2VDD 14VSS7...
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4-16VHF 1-25W PCBs / Schematics / Parts Lists 0VDC5VDC 5VDC (SOURCE) -2 to +7dBm 13.30VDC 6.83VDC 4.52VDC (R) +1dBm 0VDC (R) 4.95VDC (R) 2.90VDC 3.42VDC3.63VDC 2.5VDC 1.1-4.1VDC 0VDC (T) 2.62VDC (T) 4.91VDC (T) Temp. Comp. Xtal Ref.Osz. 11.28VDC4.97VDC 2.5-11VDC 5VDC (LOCKED) 0VDC (UNLOCKED)R3203A15 A24 A3 K1 1K2 2K3 3 47 D32016 47K NU TRBL3232 2.2uH NUR3228 C3231 C3225 .01uF L3201 390nH 0.1uF C3202 .01uF 100 R3223C3229 D3221 0.1uF.047uF CLK C3251 C3207 22pF NU47K VCOBIAS_2 R3225 C3226 8.2pF...
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VHF 1-25W PCBs / Schematics / Parts Lists4-17VHF PCB 8486172B07 Parts List 1-25W Circuit RefMotorola Part No.DescriptionC3000 2113741F37 3.3nF 50V C3001 2113740F19 4.7pF 5% C3002 2113740F26 9.1pF 5% C3003 2113741F37 3.3nF 50V C3004 2113740F45 56pF 5% C3005 2113740F51 100pF 5% C3006 2113740F45 56pF 5% C3007 2113741F37 3.3nF 50V C3008 2113741F25 1nF 50V C3009 2113741F13 330pF 50V C3010 2113741F13 330pF 50V C3011 2113741F37 3.3nF 50V C3012 2113741F25 1nF 50V C3013 2113740F45 56pF 5% C3014 2113740F24 7.5pF...
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4-18VHF 1-25W PCBs / Schematics / Parts ListsD3004 4805649Q13 VCTR 1SV228 SOT23D3011 4880142L01 PIN D3031 4886143B01 MIXER DIODE CROSSOVER D3101 4880154K03 DIODE DUAL SCHOTTKY D3201 4802233J09 TRIPLE SOT143-RH D3221 4880236E05 CHIP SCHOTTKY D3341 4805649Q13 VCTR 1SV228 SOT23 D3361 4805649Q13 VCTR 1SV228 SOT23 D3362 4862824C01 VARACTOR CHIP D3401 4813833C02 DUAL SOT MMBD6100 D3451 4880236E05 CHIP SCHOTTKY D3471 4802482J02 PIN MA/COM D3472 4802482J02 PIN MA/COM FL3101 9180112R16 44.85 MHZ CRYSTAL FLTR...
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VHF 1-25W PCBs / Schematics / Parts Lists4-19 * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not fieldreplaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes. R3421 0662057A87 39k 1/16W 5% R3422 0662057A57 2k2 1/16W 5% R3423 0662057A87 39k 1/16W 5% R3424 0662057C13 2R7 1/10W 5% R3425 0662057C13...
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4-20VHF 1-25W PCBs / Schematics / Parts Lists THIS PAGE INTENTIONALLY LEFT BLANK
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GM328/GM338/GM398 Mobile Radios UHF (403-470MHz) Service Information Issue: December, 2003
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Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in...
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i Table of Contents Section 1 Model Chart and Technical Specifications 1.0 GM328/GM338/GM398 Model Chart ................................................................... 1-1 2.0 Technical Specifications ...................................................................................... 1-2 Section 2 Theory of Operation 1.0 Introduction .......................................................................................................... 2-1 2.0 UHF (403-470 MHz) Receiver...
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ii Section 4 UHF PCB/Schematics/Parts Lists 1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1 1.1 Controller Circuits ........................................................................................... 4-1 2.0 UHF 1-25W PCBs / Schematics / Parts Lists ...................................................... 4-3 UHF (403-470 MHz) 1-25W 8485670Z02 Top Side ............................................... 4-3 UHF (403-470 MHz) 1-25W 8485670Z02...