Radio Shack TRC-447 Service Manual page 49

40-channel mobile cb with wx alert
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Symbol
Mode
Pin
Pin
No.
TX
RX
E
0.0
0.0
Q304
C
2.5
2.5
B
0.7
0.7
E
0.8
0.8
Q305
C
5.5
5.5
B
1.4
1.4
E
0.7
0.0
Q306
C
0.8
5.0
B
1.4
0.0
E
0.0
0.0
Q401
C
5.0
5.0
B
0.0
0.0
E
8.0
8.0
Q402
C
7.8
0.0
B
7.0
7.9
E
4.0
4.0
Q404
C
2.5-4V Switching Pulse
B
3-4V Switching Pulse
E
4.0
4.0
Q405
C
0-4V Switching Pulse
B
3-4V Switching Pulse
E
0.0
0.0
Q406
C
0.1
7.9
B
0.7
0.0
E
4.1
4.1
Q407
C
5.7
5.7
B
4.8
4.8
E
2-5V Switching Pulse
Q408
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q409
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q410
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q411
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q412
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q413
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
2-5V Switching Pulse
Q414
C
0-2V Switching Pulse
B
1-5V Switching Pulse
E
0.0
0.0
Q501
C
9.6
13.5
B
-0.3
0.0
Unit [V]
Comment
WX
PA
0.0
0.0
2.5
2.5
0.7
0.7
0.8
0.8
5.5
5.5
1.4
1.4
0.0
0.0
5.0
5.0
0.0
0.0
0.0
0.0
5.0
5.0
0.0
0.0
8.0
8.0
0.0
0.0
7.9
7.9
4.2
4.0
CB:20CH,WX:4CH
4.2
4.0
CB:20CH,WX:4CH
0.0
0.0
7.9
7.9
0.0
0.0
4.2
4.1
CB:20CH,WX:4CH
6.2
5.7
4.8
4.8
0.0
0.0
13.5
13.5
0.0
0.0
— 49 —

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