Motorola CP150TM User Manual
Page 220
12-38
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)
June, 2005
6880309N62-C
18 mV (RF)
-7.5 dBm
-10.3 dBm
13.2 mV (RF)
363 mV (RF)
4.2 V (Rx)
4.2 V (Rx)
4.2 V (Rx)
5 V (Rx)
0 V (Tx)
4.2 V (Rx)
3.66 V (Rx)
483 mV (RF)
-0.67 dBm
133 mV (RF)
+2 dBm
177 mV (RF)
+5.5 dBm
218 mV (RF)
+8 dBm
0.79 V
C20
390pF
C34
1.5%
6.8pF
C522
0.5pF
C46
CR41
HSMS2829
IO1
1
2
IO2
IO3
3
IO4
4
NU
C25
R51
390pF
L51
150nH
51
C31
1.43%
7pF
9.85nH
2%
L32
L41
27nH
1.2%
8.2pF
C3
C38
2
5
6
3
1
4
6.2pF
1.6%
1.3%
7.5pF
UMT1
Q22
390pF
C5
15pF
C26
1%
16pF
C11
L34
C4
C99
9.85nH
2%
L3
0.1uF
6.7%
1.5pF
9.85nH
2%
C13
680nH
L52
0
C48
BFS505
Q21
1
3
7.5pF
FE_IF_OUT
C35
1.3%
1
C43
20pF
RF BALUN
5
NC
4
6
3
2
1
TP1
T41
1
C47
TP2
1.5K
8pF
1.25%
C10
1.43%
7pF
R24
CR1
1
3
2
C39
1%
16pF
C1
C30
5.6K
9.1pF
1.1%
8.2pF
C44
R20
C36
1%
18pF
20pF
1%
C33
C23
390pF
1.5pF
6.7%
C14
8pF
1.25%
C6
9.1pF
1.1%
C2
FE_RF_INJ
5.1pF
C521
3
2
1
R25
5.6K
T42
5
NC
4
6
2%
9.85nH
IF BALUN
NC
L2
R40
L21
22nH
1K
2%
9.85nH
C45
16pF
1%
16pF
NC
L33
C7
FE_5R
C29
1.5%
6.8pF
C32
1.5%
6.8pF
C8
2%
5.1pF
L31
2%
9.85nH
C28
1%
12pF
SH40
SHIELD
1
C42
16pF
C37
1.3%
7.5pF
9.85nH
2%
L1
C49
NU
L40
27nH
NU
R21
82
C12
82pF
C51
C41
7.5pF
R23
27K
C523
6.7%
0.45pF
C9
1.2%
8.2pF
SH1
SHIELD
1
22nH
L55
0.5pF
C524
R22
5.6K
7.5pF
1.3%
C27
390pF
C21
RX_IN
IF_OUT
RX_INJ
5R
Figure 12-28. UHF (438-470 MHz) Receiver Front End Schematic Diagram (8486348Z13-C)