NHRC NHRC-4, Руководство по установке и настройке

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NHRC-4 User Guide
2.2 Secondary Radio Port Wiring
The J2 connector contains the radio interface signals for the “Secondary” radio.
J2 Secondary Radio Port Connections
J2
Pin #
Use
1 CAS (active high)
2 PTT (active low)
3 CTCSS detect (active high)
4 Receiver audio
5 T transmitter audio
6 Ground
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