Radio Manual | Ats-20

Turn the volume knob after power-on. There is no digital volume display.

To enter the Setup Menu, press and hold the Encoder Button (or sometimes a dedicated "Menu" button depending on firmware) for 2 seconds.

This is where 90% of ATS-20 users get stuck. The stock manual says “Long press Mode to select SSB” – but then tuning is confusing.

To listen to Ham Radio SSB (e.g., 20m band at 14.200 MHz USB): ats-20 radio manual

Why does SSB sound distorted? You are slightly off frequency. Use 10 Hz tuning steps (if available in your firmware) or use the fine-tuning function by pressing the encoder.

Power On/Off   → Volume knob click
Band Cycle     → B button
Fine Tuning    → M button (toggle step)
Save Preset    → Long press S → choose slot → short S
Recall Preset  → Short S → rotate knob → short S
Menu           → Hold Light button → rotate knob → S to save
Charge         → USB-C 5V/1A only (red=charging, green=full)

Note: This manual is community-sourced. No official manual exists from the manufacturer. For firmware updates (if applicable), check radioreference.com or GitHub for “ATS-20 Si4732.”

This is a comprehensive, deep-dive manual for the generic ATS-20 / ATS-20P / ATS-25 series of All-Band Radio Receivers. Turn the volume knob after power-on

Because these devices are manufactured by various Chinese OEM brands (like C.Crane, Hanfong, or unbranded), official documentation is often sparse. This guide covers the hardware architecture, menu navigation, hidden features, and troubleshooting based on the standard SI4735/DSP chipset architecture used in these units.

Because the ATS-20 radio manual is not in color, here is what those cryptic icons mean on your screen:

Yes, there is a secret engineering menu that no printed ATS-20 radio manual includes. Why does SSB sound distorted

How to access:

What you can adjust here:

Exit: Turn the radio off and on again.