Motorola GP344 - Page 325

UHF Narrow Band PCB/Schematic Diagrams and Radio Parts List (RF Board) 3-67
NU
68nH
L271
C272
C273
0.1uF
L273
33nH
L281
390nH
C276
2.2uF
100pF
C281
R245
240
TX_INJ
RX_INJ
C286
0.1uF
VSF
13
8
7
10
12
PRESC
NU
C271
Rx_sw
Tx_sw
14
18
3
19
16
15
1
20
5
6
2
4
SUPER_FLTR
TRB_IN
TX_BASE
TX_EMITTER
TX_IADJ
FLIP_IN
RX_BASE
RX_EMITTER
RX_IADJ
COLL_RFIN
TX_SWITCH
RX_OUT
RX_SWITCH
TX_OUT
PRESC_OUT
U241
50U54
11 917
VCC_LOGIC
VCC_BUFFERS
GND_LOGIC GND_BUFFERS GND_FLAG
1
SH242
SHIELD
SH241
SHIELD
1
VCO BOTTOM SHIELDVCO TOP SHIELD
AUX3
.01uF
C297
5V
2
4
10K
47K
47K
4.7K
10K
47K
47K
4.7K
1
3
Q260
1K
R260
DD
2
4
1
3
Q261
AUX4
100pF
C289
7.5K
R254
R252
330
C255
100pF
R251
18
2.4pF
C254
2
P2
3
P3
RESONATOR
L253
P1
1
1.5pF
C253
CR251
68nH
L251
C252
5.6pF
100pF
C251
CR241
A1 A2
12
C241
100pF
VCTRL
390nH
L241
CR242CR243
L242
220nH
2pF
C244
C243
7.5pF
100pF
C247
0.1uF
C248
R253
7.5K
Tx_sw
30
R248
L282
390nH
VSF
2
BFQ67W
Q241
1
3
10K
R243
Rx_sw
C245
2.4pF
R244
12K
1
2
3
RESONATOR
L243
R241
18
100pF
C246
200
R242
C285
100pF
C242
7.5pF
C250
7.5pF
UHF Narrow Band (450-470MHz) Voltage Controlled Oscillator Schematic Diagram 8415563H06