Radio Connections

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Instructions for connecting radios, repeaters AllStarLink interfaces including the RTCM, GPS', URI/URI X and like devices.




CDMs make great nodes. This eBay reseller has very nice cables. Use to connect to URI or RTCM.

CDM Cable from WB9KNX - Cable 83 has only one output to use for either COS or CTCSS. Use another cable if you need both COS and CTCSS.



The Quantar can be tricky to interface as it's extremely programmable and you will need a wireline card for I/O connections. By default the I/O will not work unless the "wildcard" table is programed. This wildcard table is Boolean logic of interrupt states in the radio, is extremely flexible and frustrating to debug. It's a base station in it's own class.

Front of Quantar and controller

Note you will want to use BEW mode on the RTCM if using the RTCM do squelch.

Syntor X

The Motorola Syntor X with an Xcat installed makes a great frequency agile remote base. For more information see this Syntor Xcat page.



Repeater Controler

An example of using RTCMs to replace 420 links

Spectra Engineering

  • MX800 Base station - Bryan Fields, W9CR has a complete setup guide for the MX800 Base station which includes fallback to the built in controller and an audio delay module.



The URI is Manfactured and sold by DMK Engineering.