Figure 7-40. Vhf (146-174 Mhz) Receiver Front End Schematic Diagram (8486342Z13-C) - Motorola CP150 Service Manual

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7-38
128 mV (RF)
C4
C2
L1
15pF
36pF
68nH
2%
1%
1%
RX_IN
FE_RF_IN
C1
C3
22pF
47pF
1%
1%
SH1
SHIELD
1

Figure 7-40. VHF (146-174 MHz) Receiver Front End Schematic Diagram (8486342Z13-C)

June, 2005
5R
FE_5R
R20
6.8K
1%
Q22
1
UMT1
2
6
3.38V (Rx)
C20
R23
1000pF
22K
1%
C6
C5
L4
C8
15pF
3.0pF
68nH
30pF
R26
C22
0
1%
2%
1000pF
3.3%
1%
3
L2
L3
C7
C9
68nH
68nH
33pF
L21
NU
2%
2%
1%
NU
1
2
CR1
MMBD352
SH40
SHIELD
1
5.0V (Rx)
0V (Tx)
C26
R21
1000pF
3.95V (Rx)
100
4
5
3.95V (Rx)
3
C25
L22
1000pF
100nH
2.0V (Rx)
C99
R22
0.1uF
6.8K
3.9V (Rx)
700mV (RF)
C29
C31
L31
C33
R24
10pF
30pF
68nH
24pF
2%
750
1.0%
1%
1%
C23
1000pF
3
0.74V (Rx)
1
C30
C32
24pF
56pF
125 mV (RF)
2
1%
1%
Q21
BFS540
R25
C24
5.6K
NU
705mV (RF)
C41
L40
15pF
68nH
2%
1%
RX_INJ
FE_RF_INJ
C40
C42
20pF
36pF
1%
1%
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)
L51
150nH
L32
C35
L33
68nH
27pF
68nH
2%
2%
1%
485mV (RF)
4
3
2
6
1
C34
C36
56pF
24pF
RF BALUN
5
1%
1%
T41
NC
NC
IO3
3
4
3
L41
C43
445mV (RF)
2
68nH
15pF
2%
1%
6
1
IF BALUN
5
T42
NC
NC
R40
C44
1K
20pF
1%
1
TP1
TP2
1
500mV (RF)
IF_OUT
L52
FE_IF_OUT
680nH
R51
51
C51
82pF
1
IO1
IO4
4
IO2
2
CR41
HSMS2829
6880309N62-C

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