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Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual

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    							UHF Band 2 1-25W PCBs / Schematics / Parts List4-11C5061 2113740F63 330pFC5062
    2113743E20
    0.1uF
    C5064 2113743E20 0.1uF
    C5065
    2113740F51
    100pF
    C5067 2113741F37 3300pF
    C5068
    2113740F51
    100pF
    C5069 2113741F49 10nF
    C5201
    2113740F51
    100pF
    C5202 2113741F49 10nF
    C5203
    2113741F49
    10nF
    C5204 2113740F51 100pF
    C5205
    2113741F49
    10nF
    C5206 2311049J25 10uF
    C5208
    2113743E20
    0.1uF
    C5209 2113743E20 0.1uF
    C5210
    2104993J02
    2.2uF
    C5211 2113743E20 0.1uF
    C5213
    2311049A09
    2.2uF
    C5214 2311049A09 2.2uF
    C5215
    2311049A09
    2.2uF
    C5217 2113741F49 10nF
    C5221
    2109720D01
    0.01uF
    C5222 2109720D14 0.1uF
    C5224
    0882422W23
    1uF
    C5225 2113741F18 510pF
    C5227
    2113740F27
    10pF
    C5230 2104993J02 2.2uF
    C5231
    2113741F49
    10nF
    C5232 2113741F49 10nF
    C5233
    2104993J02
    2.2uF
    C5234 2113741F49 10nF
    C5235
    2113741F49
    10nF
    C5236 2113743E12 0.047uF
    C5242
    2113740F51
    100pF
    C5243 2113740F51 100pF
    C5244
    2113740F51
    100pF
    C5245 2113740F51 100pF
    C5246
    2113740F51
    100pF
    C5251 2113743E20 0.1uF
    C5252
    2113741F25
    1000pF
    C5253 2311049A56 4.7uF
    C5254
    2113743E20
    0.1uF
    C5255 2113740F51 100pF
    C5263
    2113743E20
    0.1uF
    C5287 2113740F51 100pF
    C5289
    2113743E20
    0.1uF
    C5301 2113740F51 100pF
    C5302
    2113740L09
    4.3pF
    C5303 2113740L09 4.3pF
    C5304
    2113740L12
    5.6pF
    C5306 2113740L01 2pF
    Circuit 
    RefMotorola 
    Part No.Description
    C5307
    2113740F51
    100pF
    C5308 2113743E20 0.1uF
    C5309
    2113740F51
    100pF
    C5311 2113740F51 100pF
    C5312
    2113740F33
    18pF
    C5314 2113740L01 2pF
    C5315
    2113740F51
    100pF
    C5316 2109720D14 0.1uF
    C5318
    2113743E20
    0.1uF
    C5321 2113740F03 1pF
    C5324
    2113740F07
    1.5pF
    C5325 2311049A56 4.7uF
    C5331
    2113740L12
    5.6pF
    C5335 2113740F51 100pF
    C5336
    2113743E07
    0.022uF
    C5337 2113740F44 51pF
    C5338
    2113740F44
    51pF
    C5351 2113740F51 100pF
    C5352
    2113743E20
    0.1uF
    C5353 2113743E20 0.1uF
    C5354
    2104993J02
    2.2uF
    C5355 2104993J02 2.2uF
    C5361
    2113740F51
    100pF
    C5364 0662057B47 0
    C5371
    2113743E20
    0.1uF
    C5381 2113743E20 0.1uF
    C5400
    2113740F57
    180pF
    C5401 2113740F51 100pF
    C5402
    2113743E07
    0.022uF
    C5403 2113740F23 6.8pF
    C5404
    2113740F51
    100pF
    C5405 2113740F51 100pF
    C5406
    2113740F51
    100pF
    C5407 2113740F51 100pF
    C5411
    2113743E07
    0.022uF
    C5412 2113740F51 100pF
    C5413
    2113743E07
    0.022uF
    C5414 2113740F51 100pF
    C5415
    2113743E07
    0.022uF
    C5416 2113740F51 100pF
    C5417
    2113740F51
    100pF
    C5420 2113740F36 24pF
    C5421
    2113741A57
    0.033uF
    C5422 2113740A55 100pF
    C5423
    2311049A08
    1uF
    C5424 2113740F27 10pF
    C5425
    2113743E20
    0.1uF
    C5426 2113740F51 100pF
    C5427
    2113741F37
    3300pF
    C5428 2113741F33 2200pF
    C5431
    2111078B25
    27pF
    Circuit 
    RefMotorola 
    Part No.Description
    C5432 2111078B29 33pFC5434
    2113743E20
    0.1uF
    C5435 2113740A55 100pF
    C5436
    2311049A45
    10uF
    C5437 2113741A57 0.033uF
    C5438
    2311049A08
    1uF
    C5439 2111078B42 100pF
    C5440
    2113741F25
    1000pF
    C5441 2111078B05 4.7pF
    C5442
    2111078B19
    16pF
    C5448 2111078B29 33pF
    C5449
    2111078B29
    33pF
    C5451 2113741F25 1000pF
    C5452
    2113740F28
    11 p F
    C5453 2113740F51 100pF
    C5454
    2111078B01
    3.3pF
    C5455 2111078B19 16pF
    C5457
    2111078B34
    47pF
    C5458 2111078B35 51pF
    C5461
    2111078B11
    8.2pF
    C5471 2113740F51 100pF
    C5472
    2111078B27
    30pF
    C5473 2111078B27 30pF
    C5474
    2113740F18
    4.3pF
    C5475 2113740F10 2pF
    C5481
    2113741A57
    0.033uF
    C5482 2113740F38 30pF
    C5483
    2113741A57
    0.033uF
    C5491 2111078B09 6.8pF
    C5492
    2111078B42
    100pF
    C5496 2111078B05 4.7pF
    C5497
    2111078B01
    3.3pF
    C5498 2111078B01 3.3pF
    C5501
    2113741F33
    2200pF
    C5502 2113741F33 2200pF
    C5503
    2113741F33
    2200pF
    C5504 2113741F46 7500pF
    C5505
    2311049A07
    1uF
    C5506 2113741F33 2200pF
    C5507
    2113740F51
    100pF
    C5508 2113740F51 100pF
    C5510
    2113740F51
    100pF
    CR5301 4805649Q13 DIODE VCTR ISV 228
    CR5302
    4862824C01
    DIODE VARACTOR
    CR5303 4862824C01 DIODE VARACTOR
    CR5311
    4862824C01
    DIODE VARACTOR
    CR5321 4802245J22 DIODE, VARACTOR
    D0101
    4813825A05
    DIODE
    D0151 4813833C02 DIODE, DUAL 70V
    D0179
    4813833C02
    DIODE, DUAL 70V
    D0301 4802245J47 DIODE, SCHOTTKY
    Circuit 
    RefMotorola 
    Part No.Description
    D0621
    4813833C02
    DIODE, DUAL 70V
    D0651 4813833C02 DIODE, DUAL 70V
    D0660
    4813833C02
    DIODE, DUAL 70V
    D0661 4813833C02 DIODE, DUAL 70V
    D3101
    4880154K03
    DIODE DUAL SCHOTTKY
    D5001 4862824C01 DIODE VARACTOR
    D5002
    4862824C01
    DIODE VARACTOR
    D5003 4880154K03 DIODE DUAL SCHOTTKY
    D5004
    4862824C01
    DIODE VARACTOR
    D5005 4862824C01 DIODE VARACTOR
    D5006
    4880142L01
    DIODE
    D5007 4813833C02 DIODE, DUAL 70V
    D5051
    4886143B01
    DIODE, MIXER
    D5201 4802233J09 DIODE, TRIPLE
    D5221
    4813825A05
    DIODE
    D5401 4813833C02 DIODE, DUAL 70V
    D5451
    4813825A05
    DIODE
    D5471 4802482J02 DIODE, SMD PIN
    D5472
    4802482J02
    DIODE, SMD PIN
    E0271 2484657R01 FERRITE BEAD
    E0272
    2484657R01
    FERRITE BEAD
    E0631 2484657R01 FERRITE BEAD
    F0401
    6580542Z01
    FUSE 3A
    FL3101 9180112R16 2 POLE 44.85 MHZ CRYSTAL 
    FILTER
    FL3102
    9180112R16
    2 POLE 44.85 MHZ CRYSTAL 
    FILTER
    FL3111 9180469V03 CERAMIC FILTER, 455KHz
    FL3112
    9180469V06
    CERAMIC FILTER, 455KHz
    FL3114 9180468V06 CERAMIC FILTER, 455KHz
    FL3115
    9180469V04
    CERAMIC FILTER, 455KHz
    J0401 0902636Y02 FLEX CONNECTOR
    J0451
    0902636Y01
    FLEX CONNECTOR
    J0501 0986105B01 ACCESSORY CONNECTOR
    J0551
    0905505Y04
    FLEX CONNECTOR
    J0552 0905505Y03 FLEX CONNECTOR
    J0601
    0986165B01
    DC POWER CONNECTOR
    J5401 0986166B01 RF CONNECTOR (BNC)
    L3101
    2462587T25
    620nH
    L3111 2462587T25 620nH
    L3112
    2462587T25
    620nH
    L5003 2462587T20 270nH
    L5006
    2462587V24
    15nH
    L5008 2462587T23 470nH
    L5009
    2462587V24
    15nH
    L5051 2462587T17 150nH
    L5053
    2462587N43
    15nH
    L5054 2462587N43 15nH
    L5201
    2462587Q42
    390nH
    L5221 2462587P25 12uH
    L5231
    2462587Q20
    2.2uH
    Circuit 
    RefMotorola 
    Part No.Description 
    						
    							4-12UHF Band 2 1-25W PCBs / Schematics / Parts ListL5301 2462587T13 68nHL5302
    2462587T19
    220nH
    L5303 2460593C03 RESONATOR
    L5304
    2462587T22
    390nH
    L5305 2462587T22 390nH
    L5311
    2462587T22
    390nH
    L5312 2460593C03 RESONATOR
    L5313
    2462587T22
    390nH
    L5331 2462587T09 33nH
    L5333
    2462587T22
    390nH
    L5361 2462587T22 390nH
    L5362
    2462587T38
    22nH
    L5371 2462587T13 68nH
    L5401
    2460591B04
    11 . 0 3 n H
    L5402 2484657R01 FERRITE BEAD
    L5403
    2462587T11
    47nH
    L5411 2462587T11 47nH
    L5421
    2484657R01
    FERRITE BEAD
    L5422 2460591C23 13.85nH
    L5436
    2484657R01
    FERRITE BEAD
    L5437 2460592A01 17nH
    L5471
    2460591N36
    43.67nH
    L5472 2460592A01 17nH
    L5491
    2460592A01
    17nH
    L5493 2460592A01 17nH
    M3421
    2686201B01
    HEAT SPREADER
    Q0110 4880048M01 NPN
    Q0151
    4880048M01
    NPN
    Q0171 4880048M01 NPN
    Q0173
    4880052M01
    NPN DARLINGTON
    Q0177 4880048M01 NPN
    Q0181
    4880048M01
    NPN
    Q0183 4880048M01 NPN
    Q0185
    4880048M01
    NPN
    Q0271 4880214G02 NPN
    Q0641
    4880048M01
    NPN
    Q0661 4805921T02 DUAL NPN/PNP
    Q0662
    4880214G02
    NPN
    Q0663 4880048M01 NPN
    Q0681
    4880052M01
    NPN DARLINGTON
    Q3101 4813827A07 NPN
    Q3102
    4813827A07
    NPN
    Q3141 4880214G02 NPN
    Q3151
    4880048M01
    NPN
    Q3152 4880048M01 NPN
    Q5001
    4813827A07
    NPN
    Q5002 4813824A17 PNP
    Q5003
    4813827A07
    NPN
    Q5004 4805921T02 DUAL NPN/PNP
    Q5221
    4880048M01
    NPN
    Q5301 4805218N63 DIODE DUAL SCHOTTKY
    Circuit 
    RefMotorola 
    Part No.Description
    Q5311
    4805218N63
    DIODE DUAL SCHOTTKY
    Q5332 4813827A07 NPN
    Q5333
    4802245J50
    DUAL NPN/PNP
    Q5411 4805921T02 DUAL NPN/PNP
    Q5421
    4886212B01
    POWER TRANSISTOR - 
    MRF1518
    Q5422 4880048M01 NPN
    Q5431
    4886163B01
    POWER TRANSISTOR - 
    MRF1535
    Q5442 4880048M01 NPN
    Q5471
    4880048M01
    NPN
    Q5472 4805128M27 PNP
    R0101
    0662057A73
    10K
    R0102 0662057A65 4.7K
    R0103
    0662057B47
    0
    R0104 0662057A73 10K
    R0105
    0662057A97
    10K (used in GM338 only)
    R0106 0662057B47 0 (used in GM398 only)
    R0108
    0662057A57
    2.2K
    R0111 0662057B47 0
    R0113
    0662057A73
    10K
    R0114 0662057A73 10K
    R0115
    0662057A73
    10K
    R0117 0662057A63 3.9K
    R0121
    0662057A97
    100K
    R0131 0662057B46 10M
    R0132
    0662057B10
    330K
    R0151 0662057A82 24K
    R0152
    0662057A82
    24K
    R0170 0662057A73 10K
    R0171
    0662057A65
    4.7K
    R0172 0662057A73 10K
    R0173
    0662057A65
    4.7K
    R0174 0662057A73 10K
    R0175
    0662057A73
    10K
    R0176 0662057A84 30K
    R0177
    0662057A65
    4.7K
    R0178 0662057A89 47K
    R0179
    0662057A89
    47K
    R0181 0662057A65 4.7K
    R0182
    0662057A89
    47K
    R0183 0662057A65 4.7K
    R0184
    0662057A89
    47K
    R0185 0662057A65 4.7K
    R0186
    0662057A89
    47K
    R0201 0662057A25 100
    R0202
    0662057A43
    560
    R0203 0662057A25 100
    R0204
    0662057A43
    560
    R0205 0662057A73 10K
    R0206
    0662057A73
    10K
    Circuit 
    RefMotorola 
    Part No.Description
    R0207 0662057A57 2.2KR0208
    0662057A57
    2.2K
    R0211 0660076E70 7.5K
    R0212
    0660076E70
    7.5K
    R0221 0662057A82 24K
    R0222
    0662057A82
    24K
    R0223 0662057A84 30K
    R0224
    0662057A71
    8.2K
    R0228 0662057B47 0
    R0229
    0662057A01
    10
    R0241 0662057A89 47K
    R0242
    0662057B47
    0
    R0251 0662057A89 47K
    R0252
    0662057A91
    56K
    R0253 0662057A97 100K
    R0254
    0662057A73
    10K
    R0255 0662057A73 10K
    R0256
    0662057A97
    100K
    R0257 0662057A57 2.2K
    R0261
    0662057A73
    10K
    R0262 0662057B08 270K
    R0265
    0662057A82
    24K
    R0267 0662057A89 47K
    R0268
    0662057A73
    10K
    R0269 0662057A41 470
    R0273
    0662057A82
    24K
    R0275 0662057A73 10K
    R0276
    0662057A77
    15K
    R0323 0662057A79 18K
    R0324
    0662057A79
    18K
    R0331 0662057A73 10K
    R0332
    0662057A73
    10K
    R0333 0662057A73 10K
    R0335
    0662057B02
    150K
    R0341 0662057A73 10K
    R0342
    0662057A55
    1.8K
    R0343 0662057B47 0
    R0344
    0662057A91
    56K
    R0345 0662057A66 5.1K
    R0346
    0662057A89
    47K
    R0347 0662057A89 47K
    R0401
    0662057A33
    220
    R0407 0662057M26 10
    R0408
    0662057A25
    100
    R0409 0662057M26 10
    R0412
    0662057B47
    0
    R0441 0662057B47 0
    R0442
    0662057A49
    1K
    R0467 0662057M26 10
    R0468
    0662057A97
    100K
    R0481 0662057B47 0
    Circuit 
    RefMotorola 
    Part No.Description
    R0482
    0662057B47
    0
    R0510 0662057A65 4.7K
    R0511
    0662057A97
    100K
    R0512 0662057A77 15K
    R0525
    0662057A97
    100K
    R0529 0662057A89 47K
    R0530
    0662057B47
    0
    R0531 0662057A43 560
    R0533
    0662057B47
    0
    R0535 0662057A49 1K
    R0537
    0662057A33
    220
    R0538 0662057A33 220
    R0539
    0662057A65
    4.7K
    R0541 0662057A83 27K
    R0543
    0662057A97
    100K
    R0555 0662057A25 100
    R0556
    0662057A25
    100
    R0591 0662057A82 24K
    R0592
    0662057A01
    10
    R0593 0662057A97 100K
    R0611
    0662057A91
    56K
    R0612 0662057A65 4.7K
    R0621
    0662057A82
    24K
    R0641 0662057A73 10K
    R0642
    0660076E70
    7.5K
    R0643 0660076E51 1.2K
    R0651
    0662057A01
    10
    R0652 0662057A01 10
    R0661
    0662057A49
    1K
    R0662 0662057B02 150K
    R0671
    0662057A84
    30K
    R0672 0662057A73 10K
    R0681
    0662057A79
    18K
    R0682 0662057A93 68K
    R3101
    0662057A75
    12K
    R3102 0662057A01 10
    R3105
    0662057A25
    100
    R3106 0662057A83 27K
    R3107
    0662057A69
    6.8K
    R3108 0662057A44 620
    R 3 111
    0662057A75
    12K
    R3112 0662057A01 10
    R3113
    0662057A37
    330
    R3115 0662057A39 390
    R3116
    0662057A37
    330
    R3117 0662057A83 27K
    R3118
    0662057A69
    6.8K
    R3123 0662057B47 0
    R3130
    0662057A18
    51
    R3132 0662057A77 15K
    R3133
    0662057A71
    8.2K
    Circuit 
    RefMotorola 
    Part No.Description 
    						
    							UHF Band 2 1-25W PCBs / Schematics / Parts List4-13
    * Motorola Depot Servicing only
    Reference designators with an asterisk indicate 
    components which are not field replaceable 
    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. R3134 0662057A73 10K
    R3135
    0662057A51
    1.2K
    R3141 0662057A39 390
    R3142
    0662057A55
    1.8K
    R3144 0662057A58 2.4K
    R3145
    0662057A61
    3.3K
    R3146 0662057A45 680
    R3147
    0662057A75
    12K
    R3148 0662057B47 0
    R3151
    0662057A73
    10K
    R3152 0662057A73 10K
    R3153
    0662057A73
    10K
    R3154 0662057A73 10K
    R5001
    0662057A97
    100K
    R5002 0662057A37 330
    R5003
    0662057A65
    4.7K
    R5004 0662057A59 2.7K
    R5005
    0662057A73
    10K
    R5007 0662057A25 100
    R5012
    0662057A97
    100K
    R5016 0662057A61 3.3K
    R5018
    0662057A61
    3.3K
    R5020 0662057A01 10
    R5021
    0662057A01
    10
    R5022 0662057B47 0
    R5051
    0662057A18
    51
    R5052 0662057B47 0
    R5060
    0662057B10
    330K
    R5061 0662057A73 10K
    R5062
    0662057A53
    1.5K
    R5063 0662057A39 390
    R5064
    0662057B47
    0
    R5068 0662057A53 1.5K
    R5069
    0662057A49
    1K
    R5070 0662057A39 390
    R5071
    0662057A73
    10K
    R5072 0662057A73 10K
    R5201
    0662057A29
    150
    R5203 0662057A17 47
    R5204
    0662057A17
    47
    R5211 0662057B47 0
    R5221
    0662057A29
    150
    R5222 0662057A42 510
    R5223
    0662057A21
    68
    R5224 0662057A89 47K
    R5225
    0662057A89
    47K
    R5228 0662057A89 47K
    R5241
    0662057A33
    220
    R5251 0662057A87 39K
    R5252
    0662057A84
    30K
    R5261 0662057A89 47K
    Circuit 
    RefMotorola 
    Part No.Description
    R5263
    0662057A25
    100
    R5301 0662057A67 5.6K
    R5302
    0662057A73
    10K
    R5303 0662057A12 30
    R5304
    0662057A29
    150
    R5305 0662057A01 10
    R5311
    0662057A70
    7.5K
    R5312 0662057A70 7.5K
    R5313
    0662057A12
    30
    R5314 0662057A33 220
    R5315
    0662057B47
    0
    R5321 0662057A91 56K
    R5322
    0662057A69
    6.8K
    R5323 0662057A97 100K
    R5331
    0662057A09
    22
    R5341 0662057B47 0
    R5342
    0662057A57
    2.2K
    R5343 0662057A49 1K
    R5344
    0662057A01
    10
    R5346 0662057A73 10K
    R5347
    0662057B47
    0
    R5361 0662057A31 180
    R5362
    0662057A01
    10
    R5363 0662057A49 1K
    R5381
    0662057A41
    470
    R5400 0662057A23 82
    R5401
    0662057A36
    300
    R5402 0662057A05 15
    R5403
    0662057A36
    300
    R5404 0662057A73 10K
    R5406
    0662057A81
    22K
    R5411 0662057A67 5.6K
    R5413
    0662057A61
    3.3K
    R5415 0662057A18 51
    R5416
    0662057A18
    51
    R5418 0662057A57 2.2K
    R5421
    0662057A86
    36K
    R5422 0662057A58 2.4K
    R5423
    0662057A87
    39K
    R5424 0662057C11 2.2
    R5425
    0662057C11
    2.2
    R5426 0662057C11 2.2
    R5427
    0662057C11
    2.2
    R5428 0662057A58 2.4K
    R5429
    0662057A49
    1K
    R5431 0662057C51 100
    R5432
    0662057C51
    100
    R5441 0662057A87 39K
    R5442
    0662057A57
    2.2K
    R5443 0662057A87 39K
    R5445
    0662057A58
    2.4K
    Circuit 
    RefMotorola 
    Part No.Description
    R5446 0662057B47 0R5452
    0662057A59
    2.7K
    R5454 0662057A73 10K
    R5455
    0662057A97
    100K
    R5457 0683962T51 120
    R5471
    0662057A41
    470
    R5473 0680194M18 51
    R5474
    0680194M18
    51
    R5475 0662057A73 10K
    R5491
    0662057A73
    10K
    R5501 0662057A69 6.8K
    R5502
    0662057A97
    100K
    R5504 0662057A73 10K
    R5505
    0662057B09
    300K
    R5507 0662057A89 47K
    R5508
    0662057B05
    200K
    R5509 0662057A63 3.9K
    R5511
    0662057C13
    2.7
    SH5301 2602641Y02 SHIELD
    SH5302
    2602641Y02
    SHIELD
    T5051 2505515V03 TRANSFORMER 4:1
    T5052
    2508397X02
    TRANSFORMER 1:1
    U0101 5102226J56 MICROPROCESSOR
    U 0 111
    5102463J64
    EEPROM
    U0121 5186137B01 IC, FLASH ROM
    U0122
    5185748L01
    SRAM
    U0141 5113805A30 REMUX
    U0211
    5183222M49
    IC, QUAD OPAMP
    U0221 5185130C53 IC, ASFIC
    U0251
    5184704M60
    IC-CMOS ANALOG
    U0271 5109699X01 AUDIO PA
    U0301
    5109152M01
    EEPROM ANALOG
    U0331 5186204B01 BUFFER / DRIVER
    U0341
    5113818A01
    LINEAR IC OP AMP
    U0342 5105750U28 IC CMOS SWITCH
    U0351
    5102463J40
    REGULATOR, 3.3V
    U0611 5183308X01 ADJUSTABLE VOLTAGE REG-
    ULATOR
    U0641
    5183308X01
    ADJUSTABLE VOLTAGE REG-
    ULATOR
    U0651 5113816A07 REGULATOR, 5V 
    U0652
    5113815A02
    UNDERVOLT SENSOR
    U3101 5186144B01 IC, IF
    U 3 111
    5102463J52
    QUAD ANALOG SWITCH
    U3115 5102463J52 QUAD ANALOG SWITCH
    U5201
    5185963A27
    IC FRACTN
    U5211 5105739X05 IC, VOLTAGE REGULATOR
    U5301
    5105750U54
    IC, VCO
    U5401 5185130C65 IC LDMOS DRIVER
    U5402
    5113818A01
    DUAL OP-AMP
    U5501 5185765B28 IC POWER CONTROL 
    Circuit 
    RefMotorola 
    Part No.Description
    U5502
    5185963A15
    IC TEMPERATURE SENSOR
    VR0151 4813830A15 DIODE, 5.6V
    VR0501
    4805656W09
    DIODE, ZENER
    VR0503 4805656W09 DIODE, ZENER
    VR0504
    4813830A40
    DIODE, ZENER
    VR0505 4805656W09 DIODE, ZENER
    VR0509
    4813830A40
    DIODE, ZENER
    VR0510 4813830A40 DIODE, ZENER
    VR0537
    4813830A15
    DIODE, 5.6V
    VR0541 4813830A27 DIODE, 14V
    VR0601
    4813832C77
    DIODE
    VR0621 4813830A15 DIODE, 5.6V
    VR5471
    4813830A15
    DIODE, 5.6V
    Y0131 4880113R19 CRYSTAL 38.4KHZ
    Y3101
    4880606B09
    2ND OSC XTAL 44.395 MHZ
    Y3102 9186145B02 455KHz DISCRIMINATOR
    Y5262
    4886182B01
    TCXO 16.8MHZ
    Circuit 
    RefMotorola 
    Part No.Description 
    						
    							4-14UHF Band 2 1-25W PCBs / Schematics / Parts List
    THIS PAGE INTENTIONALLY LEFT BLANK 
    						
    							 GM338/GM398
    Mobile Radios
    Low Band
    Service Information
    Issue: December, 2003 
    						
    							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 this manual may not be copied or reproduced in 
    any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola 
    products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license 
    under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-
    free license to use that arises by operation of law in the sale of a product. 
    						
    							i
    Table of Contents
    Section 1 Model Chart and Technical Specifications
    1.0 GM338 Model Chart............................................................................................. 1-1
    2.0 Technical Specifications ...................................................................................... 1-2
    Section 2 Theory of Operation
    1.0 Introduction .......................................................................................................... 2-1
    2.0 Low Band Receiver .............................................................................................. 2-1
    2.1 Receiver Front-End ........................................................................................ 2-1
    2.2 Front-End Band-Pass Filters and Pre-Amplifier ............................................. 2-2
    2.3 First Mixer and High Intermediate Frequency (IF) .......................................... 2-2
    2.4 High Intermediate Frequency (IF) and Blanker Switches ............................... 2-2
    2.5 Low Intermediate Frequency (IF) and Receiver Back End ............................. 2-3
    2.6 “Extender” (Noise Blanker) ............................................................................. 2-3
    3.0 Transmitter Power Amplifier (PA) 60 W ............................................................... 2-4
    3.1 Power Controlled Stage.................................................................................. 2-4
    3.2 Driver Stage.................................................................................................... 2-5
    3.3 Final Stage ..................................................................................................... 2-5
    3.4 Antenna Switch............................................................................................... 2-5
    3.5 Harmonic Filter ............................................................................................... 2-5
    3.6 Power Control ................................................................................................. 2-6
    3.7 TX Safety Switch ............................................................................................ 2-6
    4.0 Frequency Synthesis ........................................................................................... 2-7
    4.1 Fractional-N Synthesizer ................................................................................ 2-7
    4.2 Voltage Controlled Oscillator (VCO) and Buffers ........................................... 2-8
    4.3 Synthesizer Operation .................................................................................... 2-9
    Section 3 Troubleshooting Charts
    1.0 Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)...................................... 3-1
    2.0 Troubleshooting Flow Chart for Transmitter ........................................................ 3-3
    3.0 Troubleshooting Flow Chart for Synthesizer ........................................................ 3-4
    4.0 Troubleshooting Flow Chart for VCO ................................................................... 3-5 
    						
    							ii
    Section 4 Low Band PCBs/Schematics/Parts Lists
    1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1
    1.1 Controller Circuits ........................................................................................... 4-1
    2.0 Low Band PCBs / Schematics / Parts Lists ......................................................... 4-3
    Low Band Range 1 (29.7-36.0 MHz) 8486206B06 Top Side ................................. 4-3
    Low Band Range 1 (29.7-36.0 MHz) 8486206B06 Bottom Side ............................ 4-4
    Low Band Range 1 (29.7-36.0 MHz) 8486206B08 Top Side ................................. 4-5
    Low Band Range 1 (29.7-36.0 MHz) 8486206B08 Bottom Side ............................ 4-6
    Low Band Range 2 (36.0-42.0 MHz) 8486207B05 Top Side ................................. 4-7
    Low Band Range 2 (36.0-42.0 MHz) 8486207B05 Bottom Side ............................ 4-8
    Low Band Range 2 (36.0-42.0 MHz) 8486207B07 Top Side ................................. 4-9
    Low Band Range 2 (36.0-42.0 MHz) 8486207B07 Bottom Side .......................... 4-10
    Low Band Range 3 (42-50 MHz) 8486908Z02 Top Side ..................................... 4-11
    Low Band Range 3 (42-50 MHz) 8486908Z02 Bottom Side ................................ 4-12
    Low Band Range 3 (42-50 MHz) 8486908Z04 Top Side ..................................... 4-13
    Low Band Range 3 (42-50 MHz) 8486908Z04 Bottom Side ................................ 4-14
    Low Band Range 1 (29.7-36.0 MHz) Synthesizer FRACN ................................... 4-15
    Low Band Range 2 (36.0-42.0 MHz) Synthesizer FRACN ................................... 4-16
    Low Band Range 3 (42-50 MHz) Synthesizer FRACN ......................................... 4-17
    Low Band Range 1 (29.7-36.0 MHz) Voltage Controlled Oscillator ..................... 4-18
    Low Band Range 2 (36.0-42.0 MHz) Voltage Controlled Oscillator ..................... 4-19
    Low Band Range 3 (42-50 MHz) Voltage Controlled Oscillator ........................... 4-20
    Low Band Range 1 (29.7-36.0 MHz) Power Amplifier - Sheet 1 of 2 ................... 4-21
    Low Band Range 1 (29.7-36.0 MHz) Power Amplifier - Sheet 2 of 2 ................... 4-22
    Low Band Range 2 (36.0-42.0 MHz) Power Amplifier - Sheet 1 of 2 ................... 4-23
    Low Band Range 2 (36.0-42.0 MHz) Power Amplifier - Sheet 2 of 2 ................... 4-24
    Low Band Range 3 (42-50 MHz) Power Amplifier - Sheet 1 of 2 ......................... 4-25
    Low Band Range 3 (42-50 MHz) Power Amplifier - Sheet 2 of 2 ......................... 4-26
    Low Band Range 1 (29.7-36.0 MHz) Receiver Front End .................................... 4-27
    Low Band Range 2 (36.0-42.0 MHz) Receiver Front End .................................... 4-28
    Low Band Range 3 (42-50 MHz) Receiver Front End .......................................... 4-29
    Low Band Range 1/2 Controller - T6 
    (for PC Boards 8486206B06 & 8486207B05) .............................................. 4-30
    Low Band Range 3 Controller-T9 (for PC Board 8486908Z02)............................ 4-31
    Low Band Range 1/2/3 Controller - T11 (for PC Boards 8486206B08, 8486207B07 & 
    8486908Z04 ) ............................................................................................... 4-32
    Low Band Range 1 and 2 IO - T6 (for PC Boards 8486206B06 & 8486207B05 .. 4-33
    Low Band Range 3 IO - T9 (for PC Board 8486908Z02) ..................................... 4-34
    Low Band Range 1/2/3 IO - T11 (for PC Boards 8486206B08, 8486207B07 & 
    8486908Z04 ................................................................................................. 4-35
    Low Band Range 1/2/3 (29.7-36.0/36.0-42.0/42-50 MHz) - Audio ....................... 4-36
    Low Band Range 1/2/3 (29.7-36.0/36.0-42.0/42-50 MHz) - Supply Voltage ........ 4-37 
    						
    							iii
    Low Band Range 1/2/3 - IF sheet 1 of 2 (for PC Boards 8486206B06, 8486207B05 & 
    8486908Z02) ................................................................................................ 4-38
    Low Band Range 1/2/3 - IF sheet 2 of 2 (for PC Boards 8486206B06, 8486207B05 & 
    8486908Z02) ................................................................................................ 4-39
    Low Band Range 1/2/3 - IF sheet 1 of 2 (for PC Boards 8486206B08, 8486207B07 & 
    8486908Z04) ................................................................................................ 4-40
    Low Band Range 1/2/3 - IF sheet 2 of 2 (for PC Boards 8486206B08, 8486207B07 & 
    8486908Z04) ................................................................................................ 4-41
    Low Band Range 1/2/3 (29.7-36.0/36.0-42.0/42-50 MHz) - Noise Blanker .......... 4-42
    Low Band Range 1 PCB 8486206B06 Parts List ................................................. 4-43
    Low Band Range 2 PCB 8486207B05 Parts List  ................................................ 4-49
    Low Band Range 3 PCB 8486908Z02 Parts List ................................................. 4-54
    Low Band Range 1 PCB 8486206B08 Parts List ................................................. 4-60
    Low Band Range 2 PCB 8486207B07 Parts List ................................................. 4-66
    Low Band Range 3 PCB 8486908Z04 Parts Lis .................................................. 4-72 
    						
    							iv
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