Motorola CDM Series Detailed Service Manual page 642

Section 12: 4-18
R4301
RXSW VSF
5.6K
C4372 C4371
R4302
100pF 0.1uF
10K
NU
C4305
1pF
NU
1 P1
L4303
RESONATOR
C4302 C4303 C4304
8.2pF 8.2pF 3.9pF 2
P2
3 P3
CR4303 CR4302
L4302
390nH
TXSW
CR4301
L4301
390nH
C4301
100pF
VCTRL_UHF_VCO R4315 L4311
VCTRL
390nH
2.5 - 11 VDC 0
C4311
C4316
100pF
0.1uF
2.6 VDC (Tx)
C4325
VCOMOD_UHF_VCO 3.1 VDC (Rx)
VCOMOD
4.7uF
C4323
1000pF
NU
UHF (403–470 MHz) Voltage Controlled Oscillator
6881091C63-F
VSF
4.58 VDC
VSF_UHF_VC0
C4308
C4355 C4352
C4351
2.2uF 0.1uF
100pF
L4305
0.1uF
390nH
L4304
C4309
R4305
390nH
100pF
10
C4306
Q4301
4.54 VDC
2pF
1
TX_IADJ
2
RX_IADJ
3
SUPER_FLTR
0 VDC (Tx)
4
COLL_RFIN U4301 PRESC_OUT
2.45 VDC (Rx) 5
RX_BASE
6 50U54
RX_EMITTER RX_SWITCH
C4307 16
R4303 TX_BASE TX_SWITCH
1.91 VDC (Tx) 15
TX_EMITTER
0 VDC (Rx) 20
FLIP_IN
30 100pF
19
TRB_IN
R4304
180
R4311
7.5K
TRB_UHF_VCO
L4313
R4381
0 VDC (Rx)
390nH
470
4.97 VDC (Tx)
C4318
C4317 0.1uF
C4381
100pF R4312
0.1uF
NU 5.6K
TXSW
NU
4.54 VDC (Tx)
C4314 0 VDC (Rx)
1.5pF R4314
C4315
270
C4312 100pF
12pF
1 P1
L4312
RESONATOR
CR4311 C4313 C4319
R4313
1pF 3.9pF
30
NU
NU
2
P2
3 P3
C4321
1pF
4.58 VDC
R4321 R4322
VSF
56K 10K
C4322 C4324
CR4321 R4323
100pF 2.4pF
100K
NU
GROUND
0 VDC (Tx)
VCOBIAS_2_UHF_VCO 2.43 VDC (Rx)
R4346
VCOBIAS_2
10K
C4375
5V
5V
0.1uF
NU 5V_UHF_VCO
C4354
C4353
2.2uF R4361
0.1uF
180
L4331
33nH
C4362 C4332
C4361 0.22uF 0.1uF
L4361
1000pF NU
33nH NU
R4360
270
R4362
C4364
10
TXINJ_UHF_VCO
2.35 VDC 5.6pF
TXINJ
(Tx)
10 C4331
4 to 6 dBm
TX_OUT R4331
8
RX_OUT
4.54 VDC
L4371
(Rx) 68nH 6.8pF
12
C4363
1pF
7
NU
13 C4373
1pF
NU
C4374
1pF
NU
VSF
R4363
1K
PRESC_UHF_VCO
PRESC
L4362
-18 to -16 dBm (Rx)
33nH
-16 to -11 dBm (Tx)
C4365
TRB 1.5pF
4.42 VDC (Rx)
0 VDC (Tx)
RXSW
C4382 C4383
100pF 100pF
NU NU
UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists
Q4333
1 6
2 0 VDC (Tx)
4.7 VDC (Rx)
3 4
R4341
0
C4336
R4337
.022uF
0
NU
L4333
R4342
390nH
2.2K
R4332 L4332
R4336
22K 15nH
1K
NU
NU
NU
C4333
C4335
R4339
100pF
51pF 22 Q4332
NU
NU
R4338
220
R4343
22
Q4331
NU 1K
MMBR941
NU
R4344
10
R4347
0
R4340
220
R4333
10K NU
R4334
NU 0
NU
R4335 C4334
10 51pF
NU NU
SH4301
SHIELD
C4337
RXINJ_UHF_VCO_1
RXINJ
51pF 13.5 to 16 dBm
R4345 C4339
0 1pF
NU NU
C4338
51pF
SH4302
SHIELD
GND