Vhf Receiver Front End Schematic Diagram - Motorola GP88s Service Manual

-16
9B
UNSWB_PLUS_1_RX UNSWB_PLUS_2_RX
UNSWB+
C3336
10uF
C3302
RX_IN_1_FE
RX_IN
150pF
L3301
C3301
12nH
5.6pF
RSSI_1_FE
RSSI
R3303
100K
C3321
0.7 - 5V
330pF
136 - 174MHz
DACRx_1_FE
DACRx
RX_INJ_1_FE
RX_INJ

VHF Receiver Front End Schematic Diagram

R5
R5_2_FE
C3337
C3309
.022uF 0.1uF
C3308
330pF
R3308
2.4K
C3303 C3304
C3306
20pF
150pF 0.1uF
L3303 C3305
R3309
12nH 2.2pF
5.6K
NU
CR3303
D3301
R3307 C3338
33K 470pF
C3326
1.9V @ -47dBm at Ant. Conn
0.1uF
0,3V @ no input at Ant. Conn
NU
C3325
R3304
Q3301 1000pF
100K
R3301
33K
NU
R3305
R3324
RT3301 220
68K
33K
NU
C3322 C3323 C3324
100pF 100pF 33pF
R5_3_FE
R3316
300
L3304
470nH
C3307
R3315
100pF
330
R3310
C3311 C3312
R3313 R3314
10K
2.7V 22
10
150pF 16pF
Q3302
D3302
L3305
C3310
20mV
12nH
1pF
NU
R3312
R3311
NU
10
CR3302
SMBV1032
R3306
2.2K
C3327
330pF
R3317
100K
C3329 C3330 C3331 C3332
330pF 100pF 100pF 39pF
C3320
82pF
L3309
150nH
C3315
10pF
6
C3317
39pF
C3313
C3316
150pF 3.3pF C3318
4
L3308
.022uF
C3319
10nH
L3306
NU
C3339
12nH
10pF
C3314
6.8pF
NU
L3312
33nH
6
C3335
C3334
22pF
20pF
4
R3318
470 SH3301 SH3302
400mV w. RF Vltmtr
SHIELD SHIELD SHIELD SHIELD
-16dBm @50Ω
TP3301
ZMY0130321-O
Circuit Board/Schematic Diagrams and Parts List
R3322
R3321
220
150
R3323
IF_1_FE
IF
18
T3301 1
2
3
XFMR
R3320
1K
NU
CR3301
4 3
R3319
1K
NU
2 1
T3302
1
2
3
XFMR
SH3303
SHIELD SHIELD