Motorola GP series Detailed Service Manual

3-130 UHF PCB 8415234H08 Schematics
UHF (403-470 MHz) Receiver Front End
C301
3.6pF
RX_IN
C303
3.9pF
R301
100K
C302
10pF
CR302
13.9nH
L302
CR301
L301
13.9nH
100pF
C308
20pF
C305
C304
9.1pF
100K
R302
1
CR303
2
3
C307
100pF
22nH
L303 R340
9.1K
RXFE Bottom Shield
Mixer ShieldRXFE Top Shield
RX Mixer Diod Shield
SH303
SHIELD
1
SHIELD
SH301
1
SH304
SHIELD
SHIELD
SH302
1
1
Q301
1
3
2
0
R328
C309
100pF
2.2K
R303
100pF
C310
100pF
C321
L304
180nH
R305
510
R304
12K
0.1uF
C314
C315
100pF
NU
C306
L305
22nH
NU
C311
6.8pF
C312
13.9nH
L307
R306
100K
CR305
13.9nH
L306
C313
10pF
CR304
9.1pF
C317
100K
R307
C316
3.9pF
100K
R342
.01uF
C380
C391
24pF
DACRx
C318
7.5pF
R329
0
4
6
3
1
2
XFMR
T301
NU
C381
3.6K
R348
TP302
R5
C370
4.7pF
12K
R332
RX_INJ
1
3
2
Q310
100pF
C386
R339
4.3K
NU
100pF
C372
R331
240
R330
10K
C371
NU
NU
C378
C373
0
R349
NU
R333
100pF
C374
180nH
L321
C319
1pF
C320
6.2pF
C375
100pF
L309
16.28nH
4
6
3
1
2
T302
XFMR
NU
R310
2
34
1
CR306
IF
R309
0
R308
51
L310
150nH
82pF
C322
VCOBUF
R5

Motorola GP series Specifications

General

Operating Temperature	-30°C to +60°C
Frequency Range	136-174 MHz
Number of Channels	16
Channel Spacing	12.5 kHz / 25 kHz
Battery Life	8 hours (with standard battery)
Operating Voltage	7.5V DC
Ingress Protection	IP54
MIL-STD	810 C, D, E, F