Motorola Pro Series Elite - Page 135

7-18 UHF Band 1, Circuit Board/ Schematic Diagrams and Parts List (PCB No. 8471441L01)
Figure 7-16: UHF Voltage Controlled Oscillator Schematic Diagram for PCB No. 8471441L01
G
G
G
G
G
G
G
G
G
G
0.1uF
VCO BOTTOM SHIELDVCO TOP SHIELD
NU
NU
Q241
1
3
2
C286
BFQ67W
3
7.5K
R254
Q261
2
4
1
2pF
C244
AUX3
68nH
L271
100pF
.01uF
C297
C285
C241
100pF
C272
1K
R260
SH242
SHIELD
1
R252
R242
330
A1
12
A2
AUX4
200
CR241
C247
100pF
10K
R243
VCTR
L
390nH
L282
L242
220nH
C246
100pF
L281
390nH
18
1
2
3
R241
VSF
RESONATOR
L243
C243
7.5pF
CR242
C276
2.2uF
ind
if
5V
CR251
L251
33nH
18
R251
RESONATOR
L253
1P
1
2
P2
3
3P
1.5pF
1
C253
100pF
SH241
SHIELD
C255
12K
R244
C281
100pF
PRESC
0.1uF
C271
C248
CR243
R253
7.5K
1
3
L241
390nH
Q260
2
4
15
TX_EMITTER
1
TX_IADJ
10
TX_OUT
13
TX_SWITCH
14
SREFFUB_CCV
18
CIGOL_CCV
5
RX_BASE
6
RX_EMITTER
2
RX_IADJ
8
RX_OUT
7
RX_SWITCH
3
SUPER_FLTR
19
TRB_IN
16
TX_BASE
4
COLL_RFIN
20
FLIP_IN
11
SREFFUB_DNG
9
GALF_DNG
CIGOL_DNG
17
12
PRESC_OUT
50U54
U241
C245
2.4pF
R245
240
C250
7.5pF
C289
100pF
C254
3.6pF
C251
100pF
R248
DD
30
C242
7.5pF
C252
10pF
L273
0.1uF
C273
Rx_sw
33nH
T
X_INJ
R
X_INJ
VSF
Rx_sw
Tx_sw
Tx_sw