Would you like a complete 2m / 1.25m / 70cm ham radio that connects like a shield to an Arduino? Can be used with a Raspberry Pi as well. Onboard Lipo charger / controller also powers your Arduino. Make your own TNC / Packet Radio, Repeater, Echo Link node, and more! 200mw, with an optional 10w amplifier. Coming soon! – https://www.hobbypcb.com/products/rs-uv3
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The HobbyPCB RS-UV3 radio module is a 144/220/450 MHz FM transceiver board. The RS-UV3 is a low cost transceiver solution for Packet Radio, repeaters, Echolink stations, base station and mobile applications. The RS-UV3 supports multiple interfaces including microphone/speaker, line level audio (soundcard), TTL serial control and Arduino Shield connections. The RS-UV3 has an built-in battery charger and provides conditioned power for the Arduino controller.