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Schematic Diagrams, Overlays, and Parts Lists
: UHF Band 1: Circuit Board/Schematic Diagrams and Parts List (PCB 8415234H09)
R245
240
C
281
100pF
L273
L281
390
n
H
33
n
H
TX_INJ
RX_INJ
L271
68
n
H
0.1
u
F
C
273
C
276
2.2
u
F
C
286
0.1
u
F
VSF
100pF
C
285
200
R242
C
246
100pF
R241
18
1
2
3
RESONATOR
L243
2.4pF
C
245
12K
R244
C
242
7.5pF
C
243
7.5pF
7.5K
R254
R253
7.5K
C
254
3.6pF
30
R248
3
2
Q252
BFQ67W
1
C
266
0.1
u
F
0.1
u
F
C
248
100pF
C
267
C
247
100pF
390
n
H
L254
Tx_sw
BFQ67W
Q241
1
3
2
10K
R243
390
n
H
L282
VSF
Rx_sw
C
244
2pF
C
R243
C
R242
L241
390
n
H
C
241
100pF
220
n
H
L242
A1
1
2
A2
C
R241
220
n
H
L252
L251
33
n
H
C
R252
C
R253
C
251
100pF
C
R251
1
A1
A2
2
C
261
7.5pF
C
252
7.5pF
7.5pF
C
256
C
253
1.5pF
P1
1
P2
3
P3
RESONATOR
L253
2
18
R251
C
255
100pF
R252
330
AUX4
100pF
C
289
1
SH241
SHIELD
SHIELD
1
SH242
V
C
O BOTTOM SHIELD
V
C
O TOP SHIELD
5V
AUX3
1K
R260
.01
u
F
C
297
2
4
1
3
Q260
10K
47K
47K
4.7K
DD
2
4
10K
47K
47K
4.7K
1
3
Q261
TX_EMITTER
TX_IADJ
TX_OUT
TX_SWIT
C
H
V
CC
_BUFFERS
V
CC
_LOGI
C
RX_BASE
RX_EMITTER
RX_IADJ
RX_OUT
RX_SWIT
C
H
SUPER_FLTR
TRB_IN
TX_BASE
C
OLL_RFIN
FLIP_IN
GND_BUFFERS
GND_FLAG
GND_LOGI
C
PRES
C
_OUT
C
D8408DK
U241
1
10
13
14
18
6
2
8
7
3
19
16
15
4
20
11
9
17
12
5
Rx_sw
PRES
C
Tx_sw
V
C
TRL
C
250
7.5pF
Figure 4-33:
UHF Voltage Controlled Oscillator Schematic Diagram: PCB No. 8415234H09
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: ......