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Schematic Diagrams, Overlays, and Parts Lists
: UHF Band 1 Section
G
NU
IN
6
OUT
44.85MHz
MXF45
FL301
2 CC1
5 CC2
1
GND1
4
GND2
3
C338
560nH
L311
22pF
C324
C325
9.1pF
L330
680nH
IF
G
0.1uF
C327
R312
4.7K
R311
33K
680nH
L331
12K
R315
R314
1.6K
0.1uF
C326
R5
R313
330
5V
C361
0.1uF
Q302
C348
0.1uF
3.3pF
C360
CR311
NU
NU
1.2uH
L332
C366
R344
51
0.1uF
0.1uF
C355
C344
C382
10uF
R359
C385
30pF
15K
R346
C367
30pF
NU
1K
24pF
R322
C364
R320
8.2K
10K
R368
R367
L325
1uH
2
GND
4
GND1
3
OUT
1
IN
44.395MHz
TSS-2
Y300
G
DISC_OUT
R369
680
C334
4700pF
DISC_OUT
G
0.1uF
C350
12K
R366
RSSI
45B02
3
2
1
455KHz
Y301
C349
0.1uF
1.8K
R364
R365
1.2K
120pF
C351
G
6
2
0.1uF
TC7W04F
U302-2
C362
3.3K
R350
100K
5V
R355
$P
BW_SEL
2.4K
R358
0.1uF
C352
TC7W04F
U302-1
1
7
39K
R345
C357
0.1uF
FL302
CFUCJ455E
3
GND
1 IN
2
OUT
C346
0.1uF
C347
0.1uF
1
2
3
CR312
39K
R321
3
GND1
4
GND2
IN
1
OUT 2
CFWC455G
FL304
R324
20K
C345
0.1uF
0.1uF
C343
GND2
4
1 IN
2
OUT
FL303
CFWC455E
3
GND1
20K
R360
1
2
3
CR313
R361
20K
C329
0.1uF
5V
R363
390
1
3
2
MMBT3904
Q320
OSCOUT
3
QUADIN
10
RFIN
1
RFIN_DEC
2
RSSIOUT
5
RSSI_FEED
9
VCC
6
IFAMP_DEC1
19
IFAMP_DEC2
17
LIMIN
14
LIMOUT
11
LIM_DEC1
13
LIM_DEC2
12
MIXOUT
20
OSCIN
4
U301
SA616
AUDIOOUT
8
AUDIO_FEED
7
GND
15
IFAMPIN
18
IFAMPOUT
16
5
VCC
NC
U302-3
TC7W04F
3
U302-4
PWR_GND
4
GND
8
5V
IFIC SHIELD
CRYSTAL FILTER SHEILD
1
SHIELD
SH322
SH323
SHIELD
1
Figure 4-22:
UHF (403–470 MHz) Receiver Back End Schematic Diagram
Содержание PR860
Страница 1: ...PR860 Two Way Portable Radio Detailed Service Manual ...
Страница 2: ......
Страница 5: ...iv Notes ...
Страница 9: ...viii Table of Contents Notes ...
Страница 13: ...Notes xii List of Figures ...
Страница 17: ...1 4 Introduction Radio Model Information Notes ...
Страница 51: ...2 34 Theory of Operation Voltage Control Oscillators VCO Notes ...
Страница 81: ...4 4 Schematic Diagrams Overlays and Parts Lists Flex Layout Notes ...
Страница 193: ...4 116 Schematic Diagrams Overlays and Parts Lists Low Band Section Notes ...
Страница 196: ......