Motorola CP160 Detailed Service Manual page 188

4-6
C2
9.1pF
IF1
RX_IN
1.1%
C1
9.1pF
1.1%
UHF2 (438-470 MHz) Receiver Front End Schematic Diagram
UHF R2 Front End
C523
0.45pF
C3 C5 C6 C8
6.7%
6.2pF 7.5pF 8pF 5.1pF
1.6% 1.3% 2%
1.25%
C4 C12 C7
L3
L1 L2
9.85nH
9.85nH
9.85nH
16pF 16pF
NU 2% 2%
2%
1% 1%
C28 C29 C31 C32
12pF 6.8pF 7pF 6.8pF
1% 1.5% 1.5%
1.43%
C27 C46 C33
C30
L31 L32
9.85nH 9.85nH
16pF 20pF
7.5pF NU
2% 2%
1% 1%
1.3%
RX_INJ
FE_5R
5R
R20
5.6K
1 4
Q22
2 5
UMT1
C20
3
6
390pF
C99
R22
R23
5.6K
27K
0.1uF
C23
R24
1.5K
390pF
C9
8.2pF C21
C11
0.79V
CR1 15pF 390pF
3 1.2%
Q21
C10
L21 R25
BFS505
5.6K
22nH
8pF
1.25%
2
1
C524
0.5pF
C34 C35 C37
C38
6.8pF 7.5pF 7.5pF
8.2pF
C48
0
1.5% 1.3% 1.3% 1.2%
C36 C39
C47
L34
9.85nH
L33 7pF
18pF
2%
9.85nH
1% 1.43%
2%
C44
FE_RF_IN J C42
L40 L41
27nH 27nH
16pF
8.2pF
C41 C43 C45
7.5pF 20pF 16pF
UHF2 PCB 8486348Z13-C Schematic Diagrams
C26
R21
82
390pF
SH1
SH40
SHIELD SHIELD
1 1
C25
390pF
L55
22nH
C521
4.2V
5.1pF
C522
3
0.5pF
1
R51
51
2
L51
150nH
T41
4 RF BALUN 3
2
C14
C49
1.5pF
6 1
NU
6.7%
5
NC NC
CR41
HSMS2829
1
IO1
3
IO3 IO4
T42
IF BALUN
4 3
IO2
2
2
1
6
5
NC
NC
R40
1K
1
TP1
TP2
1
FE_IF_OUT
L52
IF_OUT
680nH
C51
82pF
C13
1.5pF
6.7%
4