Motorola GP series - Page 313

UHF PCB 8415234H05 450-470 MHz Narrow Band 3-169
100pF
C281
R245
240
390nH
L281
RX_INJ
TX_INJ
L273
33nH
L271
68nH
C272
NU
C276
2.2uF
0.1uF
C286
VSF
0.1uF
C273
C271
NU
10
13
8
7
12
Rx_sw
PRESC
Tx_sw
1418
TX_OUT
TX_SWITCH
RX_OUT
RX_SWITCH
PRESC_OUT
50U54
U241
RX_IADJ
SUPER_FLTR
TRB_IN
TX_BASE
TX_EMITTER
TX_IADJ
COLL_RFIN
FLIP_IN
RX_BASE
RX_EMITTER
2
3
19
16
15
1
4
20
5
6
11 917
SHIELD
SH242
1
VCC_LOGIC
VCC_BUFFERS
GND_LOGIC GND_BUFFERS GND_FLAG
VCO TOP SHIELD
VCO BOTTOM SHIELD
SHIELD
SH241
1
4
10K
10K
47K
47K
47K
47K
4.7K
4.7K
1
3
2
C297
.01uF
AUX3
5V
Q260
DD
R260
1K
2
4
1
3
Q261
C289
100pF
AUX4
R254
7.5K
330
R252
C255
100pF
P2
2
R251
18
1
2.4pF
C254
P3
3
L253
RESONATOR
P1
5.6pF
C252
1.5pF
C253
CR251
68nH
L251
100pF
C251
R253
7.5K
Tx_sw
30
R248
L282
390nH
VSF
C248
0.1uF
1
3
2 Q241
BFQ67W
C247
100pF
2pF
C244
R243
10K
Rx_sw
CR242CR243
L241
390nH
12
CR241
100pF
C241
220nH
L242
VCTRL
7.5pF
C242
7.5pF
C243
7.5pF
C250
18
R241
2.4pF
C245
3
L243
RESONATOR
1
2
100pF
C246
R244
12K
C285
100pF
200
R242
UHF Narrow Band (450-470MHz) Voltage Controlled Oscillator Schematic Diagram