Radio Shack TRC-447 Service Manual

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Unit [V] Unit [V]
Symbol
No.
Pin
TX WXRX
Comment
PA
Mode
ALERT
8 0.0 0.0 0.0 0.0 - MODE
9NC
10 0-5V Alert Pulse @ Alert DOUT
11 NC
12 NC
13 NC
IC401 14 NC
15 5.0 5.0 5.0 5.0 - VDD
16 5.0 5.0 5.0 5.0 - S1
17 5.0 5.0 5.0 5.0 - S0
18 NC
19 0.0 0.0 0.0 0.0 - DT2
20 0.0 0.0 0.0 0.0 - DT1
Symbol
No.
Pin
TX WXRX
Comment
PA
Mode
Pin
1 1.4 1.4 1.4 1.4 +IN
2 0.8 0.8 0.8 0.8 -IN
IC501 3 0.0 0.0 0.0 0.0 GND
4 6.2 6.3 6.3 6.3 OUT
5 13.4 13.7 13.7 13.7 Vc
1 13.4 13.7 13.7 13.7 IN
IC502 2 0.0 0.0 0.0 0.0 GND
3 8.0 8.0 8.0 8.0 OUT

Radio Shack TRC-447 Specifications

General

Brand	Radio Shack
Model	TRC-447
Category	Radio
Language	English