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Radio Router
The following sample applications will illustrate how the Radio Router can be configured to address a variety of applications. Drop/ Link Repeater with steering: Radio site B is a drop link repeater configured with 4 NAC codes on the Drop side ($101, $102, $103, $104) and one on the link side ($104). When any of the NAC codes are seen by the receiver the repeater will come up but if NAC code $104 is seen then the link will also be enabled. The system can be configured to pass all the NAC codes it sees out the transmitters or can be strapped to a single NAC output. This configuration can also be setup to change transmitter frequencies depending on the received NAC code by connecting the channel select lines to the back connections available on the RC-4M. This configuration can also be done using CTCSS tones. DTMF is available for this type of configuration but is limited to only turning on and off links and cannot change transmitter channels.
Drop/Link/Link/Link with NAC Steering:
The Radio Router can be set up to allow each site to operate as individual Drop repeaters with the ability to call specific repeater sites as well as an ALL CALL function. Each site with its specific NAC code will operate as a local repeater only. When the drop repeater receives a NAC code for a specific site it will key up that site only. For example if Site B receives NAC code $103 the system will connect Site B to Site C only. When NAC code $999 (all call) is transmitted to any Drop receiver the entire system will come up. Each Drop transmitter will be set in the RSS software for its specific NAC code. The hand held units will be programmed with five channels. Channel one to five will have the same receive frequency and NAC code. Channel one to five will also have the same transmit frequency but will have the local NAC on one channel, the NAC codes for the other sites on three channels, and the ALL CALL NAC on the last channel. Please see the following application note to view more information:
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