Incorrect baud rate, wrong COM port, or faulty USB cable.
In Arduino IDE, go to Sketch > Include Library > Manage Libraries . Search for by Ricardo Caratti and click install.
: Stock firmware often limits what you can hear. Custom firmware can unlock continuous coverage across LW, MW, SW, and FM bands.
Before downloading any files, you must identify your specific internal board layout, as "ATS-20" devices vary across batches. ats20 firmware
: Widely considered the best upgrade for the standard ATS20/ATS20+. It features a completely reworked, non-stretched UI and replaces the clunky BFO menu with seamless frequency surfing. H.J. Berndt Firmware
Upgrading your firmware provides several immediate benefits:
The and its upgraded sibling, the ATS-20X , have become ubiquitous in the world of amateur radio and shortwave listening. As incredibly affordable, portable HF (High Frequency) receivers, they offer a lot of functionality for the price. However, many users find the out-of-box experience lacking—quirky menus, limited frequency steps, or a user interface that feels unfinished. Incorrect baud rate, wrong COM port, or faulty USB cable
Understanding ATS20 Firmware: Features, Updates, and Flashing Guide
The ATS20 (and its popular successor, the ATS20+) is a staple in the world of low-cost SDR (Software Defined Radio) and portable shortwave listening. For under $50, hobbyists get a compact, Si4732-based radio capable of SSB (Single Sideband), AM, and FM reception. However, the stock software these devices ship with often leaves much to be desired.
The Ultimate Guide to ATS20 Firmware: Updates, Features, and Installation : Stock firmware often limits what you can hear
If your unit has a working bootloader, you can often update it directly via USB:
A "simplified" guide for the Goshante 1.18 update is available on the G4ZAL Blog. Critical Hardware Warnings