Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual

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...

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...

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...

4-14UHF Band 2 1-25W PCBs / Schematics / Parts List
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 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...

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...

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)...

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)...

iv
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