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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.
Here’s the part that surprises most people: updating the firmware doesn’t require a special programmer. A simple USB-to-serial adapter (3.3V!) connected to the radio’s internal pads lets you flash new firmware in seconds. The bootloader is tiny but resilient — almost like the designers intended it to be hacked. ats20 firmware
: Currently considered one of the best for the ATS-20+. It offers the most advanced menu system and fine-tuning options, though it pushes the Arduino's flash memory to its absolute limit. You can find the source and instructions on the Goshante GitHub PU2CLR Firmware The ATS20 firmware is a quiet rebellion against
The ATS20 is not just a closed commercial product; it is largely built on the open-source . Here’s the part that surprises most people: updating
Essential for aligning the SSB reception. Troubleshooting
Tell you for the best SSB performance .