Before diving deep into the firmware, it is important to understand the hardware context. The ATS-20 is a handheld spectrum analyzer and receiver, typically covering a frequency range from 0 MHz to 800 MHz (and often usable up to 1 GHz). It utilizes a color TFT display to visualize signal strength over frequency, allowing users to see the radio spectrum in real-time.
: Includes AM/FM/SSB/CW support, 10Hz tuning steps, and an improved settings menu. Ats-20- Firmware
The device is popular because it is cheap (often under $50 on AliExpress or eBay) and features a full-color TFT display, an encoder knob for tuning, and a built-in battery. However, the "firmware" is the soul of the radio. Without good firmware, the ATS-20 is just a collection of chips and a screen. Before diving deep into the firmware, it is
Happy listening, and 73.
Currently, the most feature-rich option uses the RadioLib library. This is what most enthusiasts recommend. : Includes AM/FM/SSB/CW support, 10Hz tuning steps, and