Motorola GP series Detailed Service Manual

3-28 UHF PCB 8480587Z03 Schematics
UHF (403-470 MHz) Receiver Front End
10pF
C302
13.9nH
L301
C303
3.9pF
R301
100K
CR301
C301
3.6pF
RX_IN
L302
13.9nH
C305
20pF
100K
R302
C308
100pF
CR302
C304
10pF
C307
0.1uF
3
1
CR303
2
L303
22nH
R340
6.8K
R5
R304
12K
R305
510
C315
100pF
0.1uF
C314
100pF
C321
180nH
L304
100pF
R303
1K
1
3
2
Q301
C310
0.1uF
2.7
R328
C309
C306
22nH
L305
NU
9.1pF
C312
C311
NU
C313
10pF
DACRx
100K
R342
C380
.01uF
R306
100K
C316
3.9pF
R307
100K
C318
7.5pF
R329
0
CR305CR304
13.9nH
L306
13.9nH
L307
C317
9.1pF 6.2pF
C381
2
XFMR
T301
4
6
3
1
82pF
C322
L310
150nH
R310
270
IF
34
CR306
18
R309
R308
270
21
2
T302
XFMR
4 6
3 1
R348
3.6K
TP302
C375
100pF
7.5pF
C320
L309
16.28nH
C319
1.8pF
VCOBUF
0
R349
100pF
C374
R333
NU
R339
0
R331
L321
100pF
C386
C373
C372
Q310
1
3
2
C371
C378
NU
NU
NU
NU
NU
NU
R5
100pF
C370
RX_INJ
RSSI
R332
R330
NU
NU
R335
RT301
6.8K
R325
R338
C391
R5
NU
NU
NU
NU
21
Q316
1
3
2
NU
1
33.0K
RT300
2.2K
R300
C397
0.47uF
NU
VR300
R334
R326
NU
NU
91K
R316
C333
NU
3
2
Q315
1
R318
18K
R319
150
33K
R327
2
R336
NU
C396
NU
M300
L340
390nH
100pF
C395
1K
R347
R5
2
31
CR308
HSMP3820
R5
R317
1K
C331
100pF
SH304
SHIELD
1
SHIELD
SH302
11
SHIELD
SH301 SH303
SHIELD
1
RXFE Top Shield
RXFE Bottom Shield Mixer Shield
RX Mixer Diod Shield
-59.4dBm@403.355MHz
-59.4dBm@469.985MHz
-54.4dBm@403.355MHz
-51.8dBm@469.985MHz
-63.4dBm@403.355MHz
-60.5dBm@469.985MHz
4.386V
3.85V
0.503V
1.831V@-50dBm
-34dBm@358.255MHz
-36.7dBm@424.885MHz
-65.5dBm@45.1MHz
ZMY0130016-E

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