Uhf2 (438-470 Mhz) 1-25 W Receiver Front And Back End (Sht 1 Of 2) - Motorola CM200 Service Manual

UHF 1-25 W Band 2 PCB 8486684Z02 (Rev. A) / Schematics
RX
IF300
1
C339 C341 C340
2.0p 3.9p 3.6p
DNP
C300
C1121
51.p
DNP L300
18.08n
C338
18.p
9V
9V
3V
3V
5V
5V Q300
RX_EN
C349
SH300
SH301
120.p
SHIELD
SHIELD
1
1
C345
C328 C370
47.p
2.0p 24.p
C334
C368
8.2.p
7.5p
CR301
DNP
L309
C353
18.08n
82.p
L310
18.08n
FRONT-END SHIELD
9R
Q306
R346
R300
R310 LOC_DIST
10.K
10.K
15.K
R345
10.K
R336
220.
C323
C350
1n
120.p
Q301
L301 R331
150.n 100.
R326
C351
2.7K
100n
C343
R330 C326
R347
3.0p
820. 22.n
120.
C346 C342
2.0p 3.9p
Q303
BFS540
L311
L312
18.08n
18.08n
DNP C331
DNP
15.p
C355
C357
39.p
36.p
RX_INJ
Q304
R334
430.
C321
120.p
L304
150.n
D305
C327
C347 C344 C348 C329 C335
330p
2.7p 3.9p 2.0p 36.p 20.p
6
R338
100.
4
DNP
C358
L313
C330
10.p 36.p
C333 12.p
C332
10.p
15.p
L314
18.08n
T301
XFMR
6
C325
C324
L307 L308
200.p 130.p
18.08n
18.08n
4
R301
C366 C356
C367
470.
3.0.p 10.p 10.p
1 1
TP1
TP4
TEST_POINT
TEST_POINT

UHF2 (438-470 MHz) 1-25 W Receiver Front and Back End (Sht 1 of 2)

4-39
MIXER SHIELD
T300
XFMR
1
L306
470.0n
2
3
R340
51.
L302
C354
150.n
82p
U302
1
2
3
SH302
SHIELD
1