Uhf Receiver Back End Schematic Diagram - Motorola GP88s Service Manual

Circuit Board/Schematic Diagrams and Parts List
SH323 SH321
SHIELD SHIELD
1 1
CRYSTAL FILTER SHIELD LVZIF TOP SHEILD
FL301
XTAL
TBD
C323
L311
150pF 750nH
6 3
IF
IN OUT
R352
C324
3.3K
20pF
L331 R343
2.2uH
Vdd_FILTERED
C382
(SOURCE)
10uF
C348
C344
0.1uF
0.1uF
C329
0.1uF
SH322
SHIELD
C342
1uF
C341
1
1uF
LVZIF BTM SHEILD
C340
1uF
C339
1uF
C356
Vdd_FILTERED
.022uF
C337
L314
100pF
2.2uH
C336
0.1uF
R5
C355
R314
0.33uF
3K
C326 C328
R313
.01uF 0.1uF
330
C327
R311 100pF
30K C330
10pF
C325
R312
R351
Q302
.01uF 5.6K
0
L330
R315
680nH
12K
10
Vdda
C347
C346 C345
0.1uF
0.1uF 0.1uF
C343
0.22uF
C357
0.22uF
C358
1200pF
37 C359
C4P
0.1uF
38
MLPD_CR
C3P
39 24 C334
BRP_OFF
C2P
40 23 .022uF
BROWN_VCC
C1P
41 22
FREF
GREEN_VCC
42 21
GND
MIX_BYP
U301
43 20
LVZIF_SEL
CEX
GREEN_VSS
44 19
32D83
CLK
CLK
BLUE_VSS
45 18
DATA
BLUE_VCC
46 17
TESTA
MIX_IN
47 16
PREAMP_OUT IOUT
48 15
PRE_AGC
GOLD_VSS
14
COL
13
C338
15pF
RSSI
C360
.022uF
DA
C361
.01uF
DEMOD
R350
100K
C390
100pF
DB
R344
12K
R355
0
C383
100pF 3
C352
12pF
Vdd_FILTERED
2
C349
C351
.022uF
20pF
16.8MHz
C350
R324
330pF
2K
DATA
C362 R321
.022uF 2.4K
C363
2.2uF

UHF Receiver Back End Schematic Diagram

-17
9A
Q320
R345
BFQ67W C384
10K 56pF
1
C353
43pF R346
56K
C385
L332
56pF
C354 100nH
47pF
L325
2.2uH
R320
CR310
1K
C364
R322
.01uF
200K
ZMY0130314-O