Ats-20 Radio Manual

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.

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.

Hold the Light/Display button to enter the settings menu. Rotate tuning knob to adjust: ats-20 radio manual

| Menu Item | Function | |-----------|----------| | MW SW STEP | Tuning step (1/5/9/10 kHz for MW; 1/5 kHz for SW) | | FM STEP | FM step (50/100 kHz) | | FM DE | De-emphasis (50 µs for Europe, 75 µs for US) | | BEEP | Keypress beep on/off | | LCD BACKLIGHT | Backlight timeout (1–30 seconds / always on) | | BATTERY TYPE | Li-ion / NiMH (affects voltage display) |

Press S to save setting, then B to exit.

The ATS-20 is open-source hardware. The community has written superior firmware that the original manual never mentions. The most famous is SI4735 Arduino firmware (ported to ATS-20). Power On/Off → Volume knob click Band Cycle

Benefits of updating:

To update (you will need a USB-to-TTL adapter):

Warning: This voids any warranty and requires moderate technical skill. Note: This manual is community-sourced

If you have just unboxed an ATS-20 radio, you have likely discovered two things quickly: it is a marvel of modern portable SDR (Software Defined Radio) technology, and the "manual" included in the box is a small, multi-lingual pamphlet that leaves much to be desired.

Whether you own the original ATS-20, the ATS-20+, or the popular ATS-20 Pro (often based on the Si4732 chip), you have come to the right place. This article serves as the comprehensive ATS-20 radio manual you have been searching for. We will cover everything from first-time power-on to advanced DSP settings, SSB reception, and firmware updates.

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