Motorola MDH65SDC9AA2AN Informacje o usłudze - Strona 39
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UHF3 PCB 8486634Z02-O Schematic Diagrams
IF_BAND_SEL
BW_SE L
5V
8
U52-4
VCC
PWR_GND
GND
4
5V
IF_5V
5V
IF_IN
IF_IN
C52
18pF
C53
9.1pF
1.1%
5V for 25kHz
0V for 12.5kHz
U52-3
SH50
SH52
TC7W04F
SHIELD
SHIELD
3
5
NC
1
1
R91
3.39V
1.6K
C56
0.1uF
R53
33K
C55
R54
FL51
MXF45
5.1K
44.85MHz
0.1uF
L53
3 IN
OUT
6
0.74V
1
120pF
2 CC1
Q51
C93
5 CC2
R52
PBR941
12K
3.6pF
NU
1
4
RX Back End (Overtone)
1
7
C68
U52-1
R65
TC7W04F
39K
0.1uF
5V
R61
U52-2
100K
TC7W04F
6
2
C69
D51
0.1uF
2
3
1
R62
3.3K
R60
2.4K
C62
FL52
FLTR
0.1uF
9180468V04
1
IN
OU T 2
C64
C61
0.1uF
47pF
3
R55
5V
330
R90
51
C91
C92
C90
0.1uF
0.1uF
10uF
C58
3.05V
L54
3.9pF
R57
C57
C59
1.2uH
4.7K
2%
0.1uF
2.7pF
3
C60
CR51
3
C81
0.1uF
R80
2
5.1K
33pF
1%
1
2
TSS2_44_395MHZ
R81
1K
44.395MHz
C82
3
OU T
33pF
R82
GND1
L81
1%
NU
1uH
4
FL53
R66
CFWC455E
20K
1
IN
OUT 2
3
4
R63
R64
D52
FL54
39K
20K
1
CFWC455G
3
1 IN
OUT
2
2
R67
20K
3
4
C63
0.1uF
5V
C67
C66
C65
0.1uF
R72
0.1uF
0.1uF
390
3
1
MMBT3904
2
C70
R73
6
15
1.8K
VCC
U51
GND
130pF
SA616
1
C80
R75
2.1V When -47 dBm @ antenna
22pF
12K
1%
Y51
R77
R78
1.5V
1
I N
8.2K
680
C73
1%
R76
4700pF
GND
12K
1%
2
UHF3 (465-495 MHz) Receiver Back End Schematic Diagram
4-7
C74
47pF
Q70
R74
1.2K
Y70
45B02
455KHz
2
C71
3
0.1uF
IF_RSSI
RSSI
C72
0.1uF
IF_DEMOD
DEMOD