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VHF PCB 8486473Z04 / Schematics
4-65
G
G
BW_SEL
TC7W04F
U3221-2
5V
6
2
100K
R3276
0.1uF
C3225
TC7W04F
U3221-1
1
7
R3209
39K
C3208
0.1uF
C3238
R3207
0.1uF
12K
R3206
910
CR3202
3
IN
2
OUT
Y3205
CFUCJ455E
3
GND
1
1
2
C3234
0.1uF
0.1uF
C3233
0.1uF
C3231
0.1uF
C3232
C3226
0.1uF
R3205
43K
3
GND1
4
GND2
IN
1
OUT 2
CFWC455G
Y3204
R3211
39K
1
2
CR3203
3
R3212
20K
3
GND1
GND2
4
1 IN
2
OUT
Y3203
CFWC455E
G
U3221-4
PWR_GND
4
GND
8
VCC
NC
3
5
U3221-3
TC7W04F
5V
G
5V
R3208
20K
R3226
390
MMBT3904
Q3270
1
3
2
120pF
1.2K
R3275
C3279
1.8K
R3274
G RSSI
12K
R3213
RSSI_2_ZIF
RSSI_1
0.1uF
C3209
3
2
1
455KHz
Y3202
45B02
0.1uF
C3278
G
DISC_OUT
680
4700pF
R3222
C3236
DISC_OUT
R3223
12K
10K
R3224
C3274
30pF
15K
R3273
0.1uF
C3230
C3203
30pF
Y3201
GND
2
GND1
4
OUT
3
1
IN
TSS-2
44.395MHz
R3270
1K
C3275
24pF
1uH
R3271
NU
L3270
G
C3228
0.1uF
C3221
0.1uF
10uF
C3218
51
R3221
5V
R3220
NU
1.2uH
L3202
C3200
2.7pF
4.7pF
C3207
C3222
0.1uF
12K
R3203
CR3201
Q3200
R3202
27K
C3210
0.1uF
R3204
4.7K
G
5V
R3200
820
620
R3201
0.1uF
C3205
680nH
L3203
C3202
NU
2 CC1
5 CC2
1
GND1
4
GND2
3 IN
6
OUT
44.85MHz
MXF45
Y3200
G
C3201
16pF
IF_1
680nH
L3200
C3206
9.1pF
IF
G
G
22
R3214
SWB+
4V_3.3V
4V_3.3V
NU
0
R3215
SWB_PLUS_3
G
Vdda_3
C3213
4.7uF
GND
2
4
NC
ON_OFF*
3
VIN
1
VOUT 5
Vdda
10pF
C3215
C3212
1uF
U3201
LP2980
SHIELD
SH3202
1
1
SH3203
SHIELD
RSSI_FEED
9
VCC
6
LIM_DEC2
12
MIXOUT
20
OSCIN
4
OSCOUT
3
QUADIN
10
RFIN
1
RFIN_DEC
2
RSSIOUT
5
GND 15
IFAMPIN
18
IFAMPOUT
16
IFAMP_DEC1
19
IFAMP_DEC2
17
LIMIN
14
LIMOUT
11
LIM_DEC1
13
U3220
SA616
AUDIOOUT
8
AUDIO_FEED
7
VHF (136-174 MHz) Receiver Back End
Содержание GP1280 Series
Страница 1: ...Professional Radio GP Series VHF 136 174MHz Service Information Issue November 2004 ...
Страница 24: ...2 14 THEORY OF OPERATION ...
Страница 34: ...3 10 TROUBLESHOOTING CHARTS ...
Страница 38: ...4 4 VHF PCB SCHEMATICS PARTS LISTS ...
Страница 50: ...4 16 VHF PCB 8486062B12 Parts List Intentionally Left Blank ...
Страница 54: ...4 20 VHF PCB 8486101B09 Schematics GP1280 Intentionally Left Blank ...
Страница 64: ...4 30 VHF PCB 8486062B14 Parts List Intentionally Left Blank ...
Страница 108: ...4 74 VHF PCB 8486473Z04 Radio Parts List Intentionally Left Blank ...