The RFzero™ has been developed for radio amateurs, RF enthusiasts and everyone else who wants to extend their Arduino skills in combination with RF.

The RFzero™ is an Arduino multi-purpose GPS controlled Si5351A RF unit. It can be used as a beacon (IBP, SBP, CW, FST4, FST4W, FT4, FT8, JS8, JT4, JT65, JT9, ModeX, PI4, Q65, WSPR, …), stand alone WSPR or FST4W transmitter, signal generator, VFO, QO-100 dual LO, low cost GPSDO, e.g. for 10 MHz, IC-9700 LO, 90 MHz frequency counter or … More than 40 programs, Arduino sketches, are integrated into the Arduino IDE, so you can write or modify the software yourself. With the RFzero Manager you don’t even have to know anything about Arduino to use the RFzero™.