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Ribbit, audio text messaging
(www.ribbitradio.org)
General amateur radio (ham radio) chat, questions, and news
OK, we do not speak about same users : you speak about population and I about emcomm teams. For sure, emcomm teams have to listen to population (I think about PMR446, LPD433, CB27, E channel...) in voice mode, but they need to build internal radio infrastructure to share information. Ribbit could be a brick of this solution :