Figure 7-28. Vhf (146-174 Mhz) Receiver Front End Schematic Diagram (8486342Z09-A) - Motorola CP150 Service Manual

7-22
C4
C2 L1 C5
128 mV (RF)
15pF
36pF 68nH 3.0pF
2% 1%
1% 0.1%
RX_IN
C1 C3 L2
22pF 47pF 68nH
1% 1% 2%
SH1
SHIELD
1

Figure 7-28. VHF (146-174 MHz) Receiver Front End Schematic Diagram (8486342Z09-A)

June, 2005
5R
FE_5R
R20
6.8K
1%
3.95 V (RX)
Q22
1 4
UMT1
2
3.38 V (RX)
6 3
C20
R23
1000pF
R22
22K
6.8K
1%
C6
L4 C8
15pF R26
68nH 30pF C22
0
1% 2% 1000pF
1%
3
125 mV (RF)
L3 C7 C9
68nH 33pF
L21
NU C24
2% 1%
NU
NU
1 2
CR1
MMBD352
SH40
SHIELD
1
5.0 V (RX)
0 V (TX)
R21
150
C26
1000pF
3.95 V (RX)
5
L22
C25
100nH
1000pF
2.0 V (RX)
C99
0.1uF
700 mV (RF)
3.9 V (RX)
C29 C31 L31 C33
R24 43pF 30pF 68nH 24pF
2%
750 1% 1% 1%
C23
1000pF
3
0.74 V (RX)
1
C30 C32
24pF 56pF
2 1% 1%
Q21
BFS540
R25
5.6K
C41 L40
15pF 68nH
2%
1%
RX_INJ
705 mV (RF)
C40 C42
20pF 36pF
1% 1%
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)
L51
150nH
485 mV (RF)
L32
C35 L33
68nH
27pF 68nH
2% 2%
1%
4 3
2
6 1
C34 C36
56pF 24pF
RF BALUN
5
1% 1%
T41 NC NC
4 3
445 mV (RF)
L41 C43 2
68nH 15pF
2%
1%
6 1
IF BALUN 5
T42 NC NC
R40
C44
1K
20pF
1%
1
TP1
TP2
1
500 mV (RF)
IF_OUT
L52
560nH
R51
51
C51
82pF
1
IO1
IO3 IO4
3
4
IO2
2
CR41
6880309N62-C