Motorola CM140 Service Information page 53

Commercial series cm vhf1 (136-162mhz) low power
Hide thumbs Also See for CM140:
Table of Contents

Advertisement

VHF1 1-25W PCB 8486672Z01 / Schematics
1
7
U301
TC7W04F
U301
TC7W04F
6
2
BW_SEL
C312
100n
Check if it is 3v or another value
3V
U301
8
PWR_GND
VCC
GND
4
U301
TC7W04F
3
5
5V
R336
R332
100.
R304
560.
33.K
C305
100n
C304
R322
100n
4.7K
FL300
FLTR_44.85M
FREQ
L304
1.2u
3
IN
OUT 6
2
CC1
DNP
R312
5
CC2
C357
13.K
C364
C359
22.p
8.2p
22p
C335
9.1p
R315
R306
12.K
C313
20.K
100n
FL301
FLTR
1 IN
OUT
2
D302
R305
R316
20.K
12.K
1 IN
OUT
2
R326
R324
FL302
3.3K
FLTR
2.4K
C316
0.1uF
R307
R317
FL304
20.K
12.K
CFWC455D
1
IN
OUT 2
D304
R308
R318
D303
20.K
12.K
1
IN
OUT
2
R319
R302
R325
FL303
12.K
0.
3.3K
CFWC455G
R338
C318
51.
U300
0.1uF
3V
VCC
SA616
6
C307
C301
C308
100n
10.0u
100n
C336
6.8p
Q305
DNP
DNP
L301
C367
R323
2.7p
4.7K
1.2u
C303
C360
100n
22p
C306
CR300
100n
C319
0.1uF
C352
C353
R309
33p
30p
15.K
Y301
R311
NU
06B09
15.K
44.395MHz
3
1
OUT
IN
NU
R303
C356
30p
0.
NU
L315
27nH
D301
R314
12.K
C317
0.1uF
3V
C311
C310
R334
100n
100n
390.
Q302
GND
15
C302
R328
130.0p
1.8K
Y300
R329
45B02
1.2K
455KHz
C320
C315
0.1uF
100n
C314
RSSI
100n
R313
12.K
C309
100n
DEMOD
R320
R331
10.K
680.
C322
4.7n
R321
8.2K
73D02968C63-0
SHEET 6 OF 8
VHF1 (136-162MHz) Receiver Front and Back End (Sht 2 of 2)
4-13

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Cm30Cm160Cm360

Table of Contents