Figure 7-5. Vhf (136-162 Mhz) Receiver Back End Schematic Diagram (8486769Z02-A) - Motorola CP150 Service Manual

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VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)
IF_BAND_SEL
BW_SE L
5V
8
U52-4
VCC
PWR_GND
GND
4
5V
IF_5V
5V
IF_IN
3 IN
IF_IN
2 CC1
C52
5 CC2
22pF
C53
9.1pF
1.1%
6880309N62-C
5V
R61
100K
5V for 25kHz
0V for 12.5kHz
U52-3
SH50
SH52
TC7W04F
SHIELD
SHIELD
3
5
NC
1
1
R91
3.39V
1.6K
C56
R55
0.1uF
330
R53
33K
C55
R54
FL51
MXF45
5.1K
44.85MHz
0.1uF
3
L53
OUT
6
0.74V
1
120pF
2
Q51
C93
R52
PBR941
12K
3.6pF
NU
1
4
RX Back End (Overtone)
7
1
C68
U52-1
R65
TC7W04F
39K
0.1uF
1
U52-2
TC7W04F
6
2
C69
D51
R63
0.1uF
39K
2
3
1
R62
3.3K
R60
2.4K
C62
FL52
FLTR
0.1uF
9180468V04
1
IN
OU T 2
C64
C61
C65
0.1uF
47pF
0.1uF
3
5V
R90
6
VCC
51
C91
C92
C90
0.1uF
10uF
0.1uF
C58
3.05V
L54
3.9pF
R57
C57
C59
1.2uH
4.7K
2%
0.1uF
2.7pF
C60
CR51
3
C81
C80
0.1uF
R80
5.1K
22pF
33pF
1%
1%
1
2
Y51
TSS2_44_395MHZ
R81
1K
44.395MHz
C82
3
OU T
I N
36pF
GND1
GND
1%
R82
L81
NU
1uH
4
2

Figure 7-5. VHF (136-162 MHz) Receiver Back End Schematic Diagram (8486769Z02-A)

FL53
R66
CFWC455E
20K
IN
OUT 2
3
4
R64
D52
FL54
20K
1
CFWC455G
3
1 IN
2
OUT
2
C74
R67
47pF
20K
3
4
C63
0.1uF
5V
C67
C66
0.1uF
R72
0.1uF
390
3
Q70
1
MMBT3904
2
C70
R73
15
1.8K
U51
GND
130pF
R74
SA616
1.2K
Y70
45B02
455KHz
1
2
C71
3
0.1uF
R75
2.1V When -47 dBm @ antenna
12K
R77
R78
1.5V
1
8.2K
680
C73
1%
R76
4700pF
12K
1%
7-7
IF_RSSI
RSSI
C72
0.1uF
IF_DEMOD
DEMOD
June, 2005

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