Motorola CP140 Series Service Information page 38

4-6
FE_5R
5R
SH1 SH40
SHIELD SHIELD
1
1
C2
IF 1
RX_IN
1.1%
9.1pF
C1
L1
9.85nH
8pF
2%
1.25%
UHF3 (465-495 MHz) Receiver Front End Schematic Diagram
C523
6%
0.5pF
C3 C5 C8
C6
1.25% 1.3% 2.3%
4.3pF
8pF 7.5pF 4.3pF
C4 C12 C7
2.3%
L2 L3
9.85nH
9.85nH
10pF 9.1pF
NU
2% 2%
1.0% 1.1%
C28 C29 C31 C32
1.6%
1.0% 1.6% 1.8%
10pF 6.2pF 5.6pF 6.2pF
C27
C30 C4 6
L32
L31
9.85nH
9.85nH
8.2pF 16pF NU
2% 2%
1.2% 1%
UHF R3 Front End
R20
5.6K
1 4
2 5
Q22
UMT1
C20
6 3
390pF
R23
27K C99
0.1uF
R22
5.6K
C23
R24
1.2K
390pF
C9 C11 C21
0.79V 1
1.6% 1%
CR1 6.2pF 390pF
3 68pF
C10
R25
L21
5.6K
33nH
2.7pF
3.7%
2
1
C524
6%
0.5pF
C34 C35 C37 C38
1.6% 1.2%
1.6% 2%
6.2pF 6.2pF 8.2pF 5.1pF
C33 C36 C39
C47
L33 L34
9.85nH 9.85nH
24pF 18pF
NU 2.7pF
2%
2%
1% 1% 3.7%
C42 C44
FE_RF_IN J
L40 L41
RX_IN J
1.2% 27nH 27nH
8.2pF 9.1pF
C41 C43
10pF 20pF
1.0% 1%
C26
R21
91
390pF
C25
390pF
L55
22nH
C521
4.2V
3.7%
2.7pF
C522
3
0.5pF
Q21
BFS505
L51
150nH
C48
T41 3
4
0
2
C49
C14
6 1
NU
6.7%
RF BALUN
5
1.5pF
NC NC
3
IO3
T42
4 3
2
6 1
1.1%
IF BALUN
5
NC
C45 NC
R40
1K
15pF
1%
1
TP1
TP2
1
UHF3 PCB 8486634Z02-O Schematic Diagrams
FE_IF_OUT
L52
IF_OUT
680nH
R51
51
C51
82pF
C13
6.7%
1.5pF
1
IO1
4
IO4
IO2
2
CR41
HSMS2829