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DTMF Equipped Interoperatibility Repeater Controller
Repeater Interoperability Controller
Midian’s RIC-8 is a tone remote adaptor and encoder that allows up to eight RIC-8 equipped repeaters connected by leased line or microwave to interoperate. A DTMF equipped tone remote controller/console or field radio can send DTMF commands to establish links between repeaters or to all units for simulcast operation. DTMF can then be used to disable the link.
When a repeater is enabled and traffic is present, the repeater gives the RIC-8 a COR indication to cause the RIC-8 to generate the 2175 Hz keying tone to the other repeaters.
Only enabled RIC-8 equipped repeaters will retransmit the traffic from the other repeater.
-Web News/9-1-1 Magazine (via Midian Electronics, Sep 2, 2010)