Motorola GP Series Detailed Service Manual page 154

3-10
R301
R302
100K
100K
C301 C303
3.6pF 3.9pF
RX_IN
CR301 CR302
C302
L301 L302
10pF
13.9nH 13.9nH
SH301 SH302
SHIELD SHIELD
1 1
RXFE Bottom Shield
RXFE Top Shield
SH304
SHIELD
1
RX Mixer Diod Shield
UHF (403-470 MHz) Receiver Front End
R305
510
R304
12K
L304
180nH
C309
C308
100pF
100pF
-59.4dBm@403.355MHz
R303
1K
C305 C307
Q301
3
20pF
0.1uF
-59.4dBm@469.985MHz
1
3
CR303 2
R328
2.7
C304 L303 R340
2 1
10pF 22nH 6.8K
R5
L340
390nH
SH303
SHIELD
C395
100pF
1
Mixer Shield
M300
DACRx
R5
R342
100K
C315
C314
100pF
0.1uF
C321
100pF
C306
NU
-54.4dBm@403.355MHz
R306
100K
C312
C316
C310
L305
9.1pF 3.9pF
0.1uF
22nH
-51.8dBm@469.985MHz
CR304
L306
C311 C313
10pF 13.9nH
NU
CR308
R347
HSMP3820 R317
1K
1K
1 3
2
C331
100pF
4.386V
C396
R336
NU
NU
R5
R316
91K
C333
Q315
NU 3
1
0.503V
2 R318
18K
3.85V
R319
150
R327
33K
3
1
2
Q316
NU
R326
NU
C380
.01uF
-63.4dBm@403.355MHz
XFMR
6
R307 -60.5dBm@469.985MHz
100K
C318
R329
7.5pF
0
4
CR305
L307 C317 C381
13.9nH
9.1pF 6.2pF
-34dBm@358.255MHz
TP302
-36.7dBm@424.885MHz
R5
R339
0
R332
NU
C386
100pF
C370
1
100pF
RX_INJ
R300
2.2K
RSSI
C371
R330
NU NU
C397
0.47uF
1.831V@-50dBm
1
RT300
33.0K R335
NU
R338
2
NU
R5
2 1
VR300
NU
R325 C391
RT301
NU
6.8K NU
R334
NU
UHF PCB 8480450Z03 Schematics
C322
82pF
-65.5dBm@45.1MHz
L310
150nH
R310
R308
270
270
R309
18
IF
CR306
4 3
T301
1
2
3 2 1
T302
XFMR
L309
R348
3.6K 16.28nH
C320 C319 C375
7.5pF 1.8pF 100pF
VCOBUF
R333
L321 C374
NU
100pF
NU
R349
0
3
C373
C378
Q310
NU
NU
2
C372
R331
NU
NU
ZMY0130016-E