Motorola GP344 Detailed Service Manual page 372

3-16
C281
R245
100pF
240
L281 L273
390nH 18nH
C272
1.1pF
L271
27nH
RX_INJ
TX_INJ
SH241 SH242
SHIELD SHIELD
1 1
VCO TOP SHIELD VCO BOTTOM SHIELD
3
5V
2
AUX 3
C297
.01uF
1
UHF2 Voltage Controlled Oscillator Schematic Diagram
8404102G03/G04/G05/G07/G08
VSF
C276
C286
4.6V
2.2uF
0.1uF
C273
0.1uF
18 14
10
TX_OUT
8
RX_OUT
SUPER_FLTR
12
PRESC PRESC_OUT COLL_RFIN
C271
RX_BASE
U241
1pF
7
Rx_sw
RX_SWITCH 50U54 RX_EMITTER
13
Tx_sw TX_SWITCH TX_BASE
TX_EMITTER
17 11 9
Q261
4
10K
4.7K
Q260
R260
1K
4
10K
47K
4.7K
47K
R242
120
C285
100pF
C246
100pF
1
TX_IADJ
2
RX_IADJ
3
2 Q241
4
BFQ67W
5
6
16
3
15
20
FLIP_IN
19
TRB_IN
R253
7.5K
4.6V
R254
8.2K
C289
100pF
3
C255
100pF
47K
2
AUX 4
47K
R252 R251
1
270 33
C250
L243 4.3pF
RESONATOR
3
R241
18
C242
4.3pF
2
C243
R244
1 4.3pF
15K
C245
2.7pF
R243 C244
10K 3.6pF
Rx_sw
1
2V
L282
390nH
VSF
R248
30
C247 C248
0.1uF
100pF
Tx_sw
C252
C254
20pF
3.3pF
CR251
C253
1
L253
1.5pF
RESONATOR
2
3
UHF2 PCB and Schematic Diagrams
L242
22nH
CR243 CR242
3.5V@450MHz
9.5V@527MHz
L241
390nH
VCTRL
C241
100pF
CR241
A1 A2
1 2
L251
390nH
C251
100pF