Uhf Voltage Controlled Oscillator Schematic Diagram - Motorola GP328 Detailed Service Manual

-32
6A
C281
R245
100pF
240
L281
L273
390nH
33nH
C272
NU
L271
68nH
RX_INJ
TX_INJ
SH241 SH242
SHIELD SHIELD
1 1
VCO TOP SHIELD VCO BOTTOM SHIELD
5V
AUX3
C297
.01uF

UHF Voltage Controlled Oscillator Schematic Diagram

VSF
C276 C286
0.1uF
2.2uF
if
ind
C273
0.1uF
18 14
10
TX_IADJ
TX_OUT
8
RX_IADJ
RX_OUT
SUPER_FLTR
12
COLL_RFIN
PRESC PRESC_OUT
U241
RX_BASE
C271
7 50U54
NU
Rx_sw
RX_EMITTER
RX_SWITCH
13
Tx_sw TX_BASE
TX_SWITCH
TX_EMITTER
FLIP_IN
TRB_IN
17 11 9
Q261
4
DD
Q260
R260
1K
3 4
2
1
R242
200
C285
100pF
C246
100pF
R244
12K
1
2
Q241
3
BFQ67W
2
4
5
6 1
16
3
15 L282
390nH
20
19
R253
7.5K
Tx_sw
R254
7.5K
C289
C254
100pF
3.6pF
3
C255
L253
100pF
RESONATOR
2
AUX4
R252
R251
1
330
18
L243
C250
RESONATOR
7.5pF
3
R241
18
C242
2 7.5pF
C243
1
7.5pF
C245
2.4pF
CR243
R243 C244
2pF
10K
Rx_sw
VSF
CR241
R248
30
C248
C247
0.1uF
100pF
C252 L251
10pF 33nH
CR251
C253
1.5pF
2
P2
ZMY0130019-E
Circuit Board/Schematic Diagrams and Parts List
L242
220nH
CR242
L241
390nH
VCTRL
C241
100pF
A1 A2
1 2
C251
100pF