Motorola CDM Series Detailed Service Manual page 581

Chapter 4
VHF (136–174 MHZ) 25–45 W LDMOS PCBS,
SCHEMATICS, AND PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards
1.1 Controller Circuits
The VHF circuits are contained on the printed circuit board (PCB) which also contains the controller
circuits. This chapter shows the schematics for the VHF circuits only. Refer to the controller section
for details of the related controller circuits. The PCB component layouts and the parts lists in this
chapter show both the controller and VHF circuit components. The VHF schematics and the related
PCB and parts lists are shown in the tables below.
Table 11-1 VHF 25–45 W PCB 8486140B15 Diagrams and Parts Lists
PCB 8486140B15:
Main Board Top Side
Main Board Bottom Side
SCHEMATICS
Power Amplifier 25 – 45W
FRACN Synthesizer
Voltage Controlled Oscillator
Receiver Front-End
IF
Parts List
Controller version is T12
Table 8-2 VHF 25–45 W PCB 8471234L02 Diagrams and Parts Lists
PCB 8471234L02:
Main Board Top Side
Main Board Bottom Side
SCHEMATICS
Power Amplifier 25 – 45W
FRACN Synthesizer
Voltage Controlled Oscillator
Receiver Front-End
IF
Parts List
Controller version is T12
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Section 11: 4-1
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