A request from a fellow ham made me revisit an old project, and Arduino based repeater controller.
This lead to an iterative process to upgrade it from a simple Carrier Detect repeater to a more versatile one, that can use RSSI signal to activate the repeater. That's because the OM didn't have a Carrier Detect output on the radio that was available for his repeater.
In this version, the Mode can be selected by connecting a pin to the Ground) before the repeater is powered on.
Anti-kerchung was implemented for both Carrier detect and RSSI modes and in the later one, a hysteresis was defined.
Check it on Github for further explanations.
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