Figure 4-48: Uhf Band 2 Receiver Front End Schematic Diagram (Pcb No. 8415235H07) - Motorola PR860 Detailed Service Manual

Schematic Diagrams, Overlays, and Parts Lists: UHF Band 2 Circuit Board/Schematic Diagrams and Parts List (8415235H07)
C308
100pF
R301
R302
100K
100K
C303
C301
3.9pF
3.6pF
RX_IN
CR301 CR302
L302
C302 L301
10pF 13.9nH
13.9nH
SH301 SH302
SHIELD SHIELD
1 1
RXFE Bottom Shield
RXFE Top Shield
SH304
SHIELD
1
RX Mixer Diod Shield
R305
510
R304
12K
C321
L304
180nH 100pF
C309
100pF
C310
100pF
R303
2.2K
C305 C307
Q301
3
20pF 100pF
1
3
CR303
2
R328
0
C304
2 1 L303 R340
9.1pF 22nH 9.1K
SH303
SHIELD
1
Mixer Shield
DACRx
R5
C391
R342
100K 24pF
C315
C314
100pF
0.1uF
C380
.01uF
C306
NU
R306
100K
C312
C316
L305
6.8pF
3.9pF
22nH
CR304
C311 C313 L306
NU 13.9nH
10pF
C322
82pF
L310
150nH
T301
XFMR
6 1
R307
100K
2
C318
R329
7.5pF
0
4 3
CR305
L307 C317
C381
13.9nH 9.1pF
NU
R348
3.6K
TP302
R5
L321
180nH
R339
4.3K
R332
12K
C386
100pF
3
C370
4.7pF 1
Q310
RX_INJ
2
R330 C371 R331
10K NU 240

Figure 4-48: UHF Band 2 Receiver Front End Schematic Diagram (PCB No. 8415235H07)

4-61
R308 R310
51 NU
R309
0
IF
CR306
4 3
2 1
T302
XFMR
L309
16.28nH
C320 C319 C375
100pF
6.2pF 1pF
VCOBUF
C374
R333
100pF
NU
R349
0
C373 C378
NU NU
C372
100pF