The ATS-20 radio is a portable, handheld transceiver designed for amateur radio operators. It operates on the shortwave (HF) band, allowing users to communicate with others worldwide. The device features a compact design, weighing in at just 260 grams, making it easy to carry on outdoor adventures or use in a variety of environments.
FM: 64–108 MHz (with RDS capability on supported firmware) LW: 153–500 kHz MW (AM): 520–1710 kHz SW: 1730 kHz–30000 kHz SSB: Upper Sideband (USB) and Lower Sideband (LSB) support
Used for charging the internal battery and flashing firmware updates. ats-20 radio manual
Internal 3.7V Lithium-ion battery (rechargeable via USB-C or Micro-USB depending on production batch) 2. Unpacking and Layout Overview Device Top & Front Panel
Understanding the hardware capabilities helps you maximize performance. SI4732 (highly integrated broadcast receiver chip) Frequencies Covered: FM: 64 – 108 MHz (supports RDS where applicable) The ATS-20 radio is a portable, handheld transceiver
Elias chuckled. He ignored the warning and inserted two fresh Duracells.
The factory firmware provides a basic level of operation, but the real magic happens when you update to a custom firmware. The most popular and advanced option is , which essentially functions as a user manual in code form. You can find it on GitHub at github.com/goshante/ats20_ats_ex . This firmware adds a full settings menu, improves SSB tuning, and completely revamps the interface. Many of the controls outlined below are based on this community-driven "gold standard". FM: 64–108 MHz (with RDS capability on supported
The Si4732 chip provides excellent performance for its price. Many users report that with a decent external antenna the ATS‑20 is quite capable of picking up SSB and CW signals on 40 m, even when used with its own telescopic whip.
button to enter BFO regulation. This allows you to "clarify" the voice so it doesn't sound like a cartoon character. Bandwidth Filter
Shows current frequency, signal-to-noise ratio (SNR), RSSI (signal strength), battery status, step size, and active modulation band.
The ATS‑20 is not a high‑end communications receiver. Its RF front‑end lacks preselection filters, so strong out‑of‑band signals may cause overload. However, for casual listening and hobbyist use it is remarkably good value.