Vhf Receiver Front-End Schematic Diagram - Motorola HT Series Detailed Service Manual

80
UNSWB_PLUS_1_RX
UNSWB_PLUS_2_RX
UNSWB+ G
C3336
10uF
C3303
15pF
RX_IN_1_FE C3302
RX_IN G
150pF
C3301
L3301
5.6pF 12nH
D3301
R3304
RSSI_1_FE
100K
RSSI G
R3303
100K
C3321 C3322 C3323
100pF
330pF
100pF
DACRx
G
DACRx_1_FE
RX_INJ G
RX_INJ_1_FE
DUMMY
December 26, 2003
R5
R5_2_FE R5_3_FE
R3316
470 470
C3337 C3309
0.1uF 0.1uF
.022uF
L3304
C3308
470nH
330pF
C3307
100pF
R3310
2.7K
R3313
39
R3308
1.5K
C3304
C3306
150pF 0.1uF
Q3302
L3303
R3309
12nH
C3305 7.5K
R3311
R3312
NU
NU
5.1
CR3303
R3307
C3338
33K
470pF 470pF
C3326
NU
R3306
2.2K
Q3301 C3325
C3327
1000pF
330pF
R3301
R3305
R3324
NU
68K
220 220
RT3301
NU
C3324
33pF
Figure 8-4. VHF Receiver Front-End Schematic Diagram
R3315
330
C3315
C3312
C3311 C3313
R3314
16pF 150pF
150pF C3316
27
3.3pF
D3302
L3306
12nH
C3314
NU
C3310 L3305
12nH 12nH
NU
CR3302
SMBV1032
R3317
100K
C3329 C3330 C3331 C3332
330pF 100pF 100pF
39pF
Circuit Board/Schematic Diagrams and Parts List
C3320
82pF
L3309
150nH
6 T3301 1
10pF
C3317
2
30pF
C3318
4 3
RF BALUN
.022uF
L3308
10nH
C3339
C3319
10pF
NU
R3319
NU
L3312
33nH
T3302
6 1
C3334 2
C3335
20pF
22pF
4 3
IF BALUN
SH3301 SH3302
SHIELD SHIELD
R3318
470
1 1
1
TP3301
R3321 R3322
51 NU
IF_1_FE
G
R3323
IF
0
R3320
NU
CR3301
4 3
2 1
SH3303
SHIELD
1
FMR-2045A-2