Connect the radio to your PC via a USB cable (ensure your radio has a USB-to-serial chip like the CH340). The Software: Use the Arduino IDE or XLoader .
Most ATS20 radios use an Arduino-compatible microcontroller. To update: ats20 firmware
This allows for better SSB demodulation, reducing "chipmunk voices" and making voice transmissions clear. Connect the radio to your PC via a
Select the correct COM port and board (usually "Arduino Nano") and hit upload. Why Enthusiasts Love It ats20 firmware
The has become a cornerstone for radio enthusiasts looking to unlock the full potential of their SI4732-based all-band receivers. While these devices are affordable and compact, it is the community-driven firmware that transforms them from basic radios into versatile tools for DXing (long-distance listening).