Turn your Android phone into a ham radio transceiver

Inexpensive Build Just a few components to solder, buy the parts yourself or get a kit. Android Powered Leverages your phone's screen, GPS, and battery. No separate charging needed. Full-Featured APRS Built-in 1200 baud modem for SMS-like text messaging plus position beaconing, unlike most radios that only offer beaconing. Fully Open Source GPL3 licensed: Android app, ESP32 firmware, PCB designs, and 3D printer files. No Internal Battery Sips power from your phone. Perfect for go-bags or glove compartments. Accessible Design Live closed captions, sticky PTT with haptic feedback, and animation controls.

Inexpensive Build

Just a few components to solder, buy the parts yourself or get a kit.

Android Powered

Leverages your phone's screen, GPS, and battery. No separate charging needed.

Full-Featured APRS

Built-in 1200 baud modem for SMS-like text messaging plus position beaconing, unlike most radios that only offer beaconing.

Fully Open Source

GPL3 licensed: Android app, ESP32 firmware, PCB designs, and 3D printer files.

No Internal Battery

Sips power from your phone. Perfect for go-bags or glove compartments.

Accessible Design

Live closed captions, sticky PTT with haptic feedback, and animation controls.