Motorola 6864115B62-C Detailed Service Manual page 293

UHF 1-25W Band1 PCB 8485670Z02 / Schematics
VSF_UHF_VC0
R4301
RXSW VSF
5.6K
C4371
C4372
R4302 L4304
0.1uF
NU 390nH
10K
C4305 C4306
2pF
NU
1 P1
L4303
RESONATOR
C4304
C4302 C4303
2
3.9pF
8.2pF
8.2pF
R4303
P2
3 P3
CR4303 CR4302
L4302
390nH
TXSW
R4311
CR4301
L4301
7.5K
390nH
C4301 C4317
100pF
VCTRL_UHF_VCO
R4315 L4311
VCTRL
390nH
0
2.5 - 11 VDC
C4311
C4316
0.1uF 100pF
2.6 VDC (Tx)
VCOMOD_UHF_VCO C4325
R4321
3.1 VDC (Rx)
VCOMOD
4.7uF
C4323 C4322
NU NU
VSF
4.58 VDC
C4308
C4355 C4352
L4305
2.2uF 0.1uF
390nH
0.1uF
C4309
R4305
10
100pF
U4301
50U54
Q4301 VCC_BUFFERS
4.54 VDC
1 TX_IADJ
2 RX_IADJ
3 SUPER_FLTR
0 VDC (Tx)
4 COLL_RFIN
2.45 VDC (Rx)
5 RX_BASE
6 RX_EMITTER
C4307 16 TX_BASE
1.91 VDC (Tx)
15 TX_EMITTER
0 VDC (Rx)
20 FLIP_IN
30 100pF
19 TRB_IN
GND_FLAG
R4304
9 11
180
TRB_UHF_VCO
L4313
390nH
C4318
C4381
0.1uF
NU
C4314
NU R4312
1.5pF
5.6K
TXSW
4.54 VDC (Tx)
0 VDC (Rx)
R4314
C4315
270
100pF
C4312
12pF
1 P1
C4313
CR4311
R4313
NU
30
2
P2
L4312
3 P3
RESONATOR
C4321
1pF
4.58 VDC
R4322
VSF
56K
10K
CR4321
C4324
R4323
2.4pF
100K
GROUND
VCOBIAS_2_UHF_VCO 0 VDC (Tx)
R4346
2.43 VDC (Rx)
VCOBIAS_2
10K
C4375
NU
5V
5V_UHF_VCO
C4351 C4354 R4361 C4353
180 0.1uF
100pF 2.2uF
L4331
33nH
C4361
C4362
C4332
100pF
NU
NU
L4361
390nH
TXINJ_UHF_VCO
2.35 VDC TXINJ
VCC_LOGIC
(Tx)
4 to 6 dBm
C4331
10
TX_OUT R4331
L4371
8
RX_OUT
4.54 VDC
68nH
(Rx) 6.8pF 22
12
PRESC_OUT
C4373
7
C4363
RX_SWITCH
13
TX_SWITCH NU
NU
C4374
NU
GND_BUFFERS
GND_LOGIC
17
PRESC_UHF_VCO
PRESC
-18 to -16 dBm (Rx)
-16 to -11 dBm (Tx)
TRB
0 VDC (Rx)
4.97 VDC (Tx)
4.42 VDC (Rx)
0 VDC (Tx)
RXSW
C4383
C4382
NU NU
Q4333
1 6
2
0 VDC (Tx)
4.7 VDC (Rx)
5V
4
3
R4341
0
C4336
R4337
.022uF
NU
R4342
2.2K
R4332 L4332
R4336
NU NU
NU
C4333 C4335
R4339
NU
100pF
NU
R4338
R4343
NU
Q4331
1K
NU
R4347
0
R4340
R4334
NU
R4333
NU NU
R4335 C4334
NU NU
UHF (403-470 MHz) Voltage Controlled Oscillator
4-7
L4333
390nH
C4337
RXINJ_UHF_VCO
RXINJ
13.5 to 16 dBm
R4345
51pF
C4339
NU
NU
Q4332
C4338
R4344
51pF
10
SH4301 SH4302
SHIELD SHIELD
GND
ZWG0130523-A