Ats20 Firmware [updated] May 2026

(and its successor, the ) is a popular, budget-friendly DSP radio based on the Si4732 chip. While the stock firmware (typically version 1.1.5) is functional, the community has developed custom alternatives that unlock significant features, turning the device from a basic receiver into a capable tool for amateur radio enthusiasts. Why Upgrade Your ATS-20 Firmware?

: The foundational library for many ATS-20 variations. It is reliable and often serves as the "stable" baseline for those who want a clean, bug-free experience. How to Flash the Firmware The ATS-20 is essentially an Arduino Nano Arduino Uno connected to a radio chip. Lets upgrade the ATS 20+ ats20 firmware

Below is a detailed breakdown of the ATS20 firmware features, capabilities, and architecture. (and its successor, the ) is a popular,

Note: The IU5JAE firmware requires the "Plus" version of the radio (ATS-20+) or a specific hardware modification (adding a 3.3V level shifter) for the original ATS-20. : The foundational library for many ATS-20 variations

C. User Interface (UI) & Display

The firmware manages a 0.96" or 1.3" OLED display (I2C protocol).

: Access to synchronous AM mode, adjustable bandwidths, and battery-saving CPU frequency settings. Popular Firmware Options ATS_EX by Goshante (v1.18)