Ats-20 Radio Manual ✦ Direct & Verified

Connect a simple spool of insulated speaker wire (20 to 50 feet) to the center pin of the BNC connector. String this wire outside, as high and clear of structures as possible. This will massively boost shortwave reception.

Port to connect the included whip antenna or external antennas.

The ATS-20 is not a traditional analog radio; it is a based on the SI4735 DSP chip . Unlike older radios that use coils and tuning capacitors, the ATS-20 processes signals mathematically.

Long press to turn the device on or off. Short press acts as a mute function on some firmware versions. ats-20 radio manual

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Won’t turn on | Dead battery / reversed polarity | Charge 4+ hrs; check 18650 orientation | | No FM reception | Antenna not connected (for SMA version) | Attach stub antenna or wire | | Poor shortwave | No external antenna | Add 15–30 ft wire outdoors | | Display flickers | Low battery or USB noise | Charge battery; use battery power | | Menus stuck | Accidental long press | Short press B or cycle power |

You can adjust the filter width to cut out interference. Use narrower settings (e.g., 2.0kHz) for crowded SSB bands and wider settings (e.g., 6.0kHz) for high-quality AM.

If you need help with a specific part of the setup, let me know! I can provide instructions for , guide you on building a DIY long-wire antenna , or explain how to listen to specific utility signals like aviation or maritime weather. Share public link Connect a simple spool of insulated speaker wire

When you unbox your ATS-20 radio, you will typically find the following items:

Adjusts physical audio output. Turning it fully counter-clockwise past the "click" will shut down the device on some variants.

FM -> MW -> LW -> 160M -> 80M -> 40M -> 30M -> 20M -> 17M -> 15M -> 12M -> 10M. Changing Audio Modes Port to connect the included whip antenna or

Hold the button to enter the settings menu. Rotate tuning knob to adjust:

: Changes the tuning increment (e.g., 1kHz, 5kHz, 10kHz). This is vital for fine-tuning SSB signals.

This is likely local electronic interference. Turn off nearby plasma TVs, computer monitors, or cheap USB wall adapters. If you are charging the radio while listening, unplug the charging cable.

Short-press the inward. A speaker icon or volume level indicator will flash on the OLED screen. Rotate the knob to find a comfortable audio level.

Press the button to select LSB (Lower Sideband, standard below 10 MHz) or USB (Upper Sideband, standard above 10 MHz).