Motorola CP160 Detailed Service Manual page 142

4-6
C2
IF1
RX_IN
18pF
C1
1%
15pF
1%
C27
9.1pF
1.1%
UHF1 (403-440 MHz) Receiver Front End Schematic Diagram
UHF R1 Front End
C523
0.55pF
5.5%
C3 C6
1.8pF 1.8pF
C5 C8
0 0
5.6% 5.6%
C4 C12
C7
L1
L2 L3
9.85nH
9.85nH 9.85nH
10pF
NU NU
2%
2% 2%
1.0%
C31 C32
C29
8.2pF 9.1pF 7.5pF
C28 1.2% 1.1% 1.3%
15pF
C30 C33
C46
L31
1% L32
9.85nH
9.85nH
22pF NU 18pF
2%
2%
1% 1%
RX_INJ
5R
FE_5R
R20
5.6K
Q22
UMT1
1 4
2
5
C20
6 3
390pF
C99
R23
R22
27K
0.1uF
5.6K
C23
390pF
C9 C11
C21
18pF
20pF
390pF
CR1
0.79V
1%
1% 10%
3
C10
R25
L21
5.6K BFS505
27nH
13pF
1%
2
1
C524 0.6pF
C34 C37
6.2pF 6.2pF
1.6% C35 1.6% C38
C48
1% 1%
0
16pF
12pF
C39
C47 C36
L33
L34
9.85nH 16pF
9.85nH 12pF
NU
2%
1%
2% 1%
L41
FE_RF_INJ C42 C44
L40 27nH
27nH
10pF 10pF
C41 C43
1.0%
1.0%
15pF 30pF
1% 1%
C26
R21
75
390pF
SH1 SH40
SHIELD SHIELD
C25
1 1
390pF
L55
18nH
C521
R24
4.2V
1.2K
3.3pF
C522
3.0%
3
2.2pF
1
R51
4.5%
51
2
Q21
L51
150nH
T41
RF BALUN
4 3
2 C14
C49
2.4pF
1
6
NU
NC
5
4.2%
NC
1
IO1
T42
3
IF BALUN
IO3
3
4
IO2
2
2
6 1
NC
5
C45 NC
R40
1K
22pF
1%
1
TP1
TP2
1
UHF1 PCB 8486635Z03-O Schematic Diagrams
FE_IF_OUT
L52
IF_OUT
680nH
C51
82pF
C13
2.4pF
4.2%
4
IO4
CR41
HSMS2829