Motorola EP450

6-6 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
November 24, 2003 HKLN4216A
Chapter 6 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
3.9V
0.74V
6.8K
1%
R20
VHF R2 Front End
68nH
2%
L40
100
R21
1000pF
C26
FE_RF_I
N
1
100nH
L22
NC
5
4
6
3
2
MMBD352
1
3
2
IF BALUN
T42
CR1
2%
68nH
L4
68nH
2%
L1
C20
1000pF
L52
680nH
C6
1%
15pF
Q22
UMT1
2
5
6
3
14
22p
F
1%
FE_5R
C1
150nH
L51
C5
3.3%
3.0pF
3
2
C43
1%
15pF
FE_IF_OUT
Q21
BFS540
1
1K
R40
36pF
1%
C42
NU
C9
82pF
C51
L32
2%
68nH
3
2
1
NC
L41
2%
68nH
RF BALUN
T41
NC
5
4
6
1000pF
C23
C40
1%
20pF
27pF
C35
1%
L3
68nH
2%
15pF
1%
C41
FE_RF_IN
J
R26
0
20pF
1%
C44
C25
1000pF
2%
68nH
L2
NU
C32
1%
56pF
C24
51
R51
30pF
1%
C8
NC
1%
33pF
C7
1
IO1
IO2
2
3
IO3
4
IO4
TP2
1
HSMS2829
CR41
C36
1%
24pF
2%
68nH
L33
15pF
1000pF
C22
1%
1%
C4
1
C3
47pF
C31
1%
SHIELD
SH40
TP1
1
30pF
SHIELD
SH1
1
22K
1%
R23
56pF
1%
C34
NU
L21
750
R24
68nH
2%
L31
36pF
C2
1%
C33
24pF
1%
6.8K
R22
1%
C29
20pF
24pF
1%
C30
C99
0.1u
F
RX_IN
5.6K
R25
RX_INJ
5R
IF_OUT
Figure 6-4. VHF (146-174 MHz) PCB 8486342Z13-C Receiver Front End Schematic Diagram