PSK31

PSK31 is a lightweight ham radio digital mode app that turns your phone into a portable PSK31 terminal. Decode and transmit PSK31 in real time with a clean interface and reliable weak-signal performance. View signals on a live waterfall and tap to auto-tune instantly. Speed up QSOs with quick macros, callsign templates, and frequency presets. Keep contacts organized with built-in QSO logging, grid locator, and ADIF export. Works with the phone microphone and speaker or an audio interface, supporting VOX or push-to-talk. Ideal for portable, field day, and shack operation. Keywords include ham radio, PSK31 decoder, amateur radio utility, digital mode, waterfall, and QSO logger.