Ats20 Firmware Updated Jun 2026

: The most stable and widely used codebase for Si473x radios.

The ATS20 firmware is a quiet rebellion against planned obsolescence. A $30 radio, transformed not by new hardware, but by better ideas written in C and flashed over a serial cable. That’s the kind of engineering that makes you smile. ats20 firmware

Download the .ino or .hex file from a reputable source like GitHub (search for "SI4735-Arduino-Library-master" by PU2CLR). : The most stable and widely used codebase for Si473x radios

Download the Goshante ATS_EX or PU2CLR source code from GitHub. transformed not by new hardware

The secret to transforming this budget radio into a powerful DXing tool lies in one phrase: