Do not leave it plugged into a computer or a "noisy" cheap wall charger while listening. The "switching noise" from the charger will bleed into the radio's circuitry, creating a loud hum on AM and SW bands. Always listen on battery power for the cleanest signal. Why a "Better" Manual Matters
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The ATS-20 is a compact, multi-band receiver based on the powerful Si4732 telemetry chip. It covers an incredibly wide frequency range, allowing you to listen to everything from local AM/FM broadcasts to international shortwave stations and amateur radio operators. Key Technical Features
Select a large step (100kHz) to move across a band quickly, then switch to a fine step (1kHz) to zero in on a weak signal. Advanced Operations: Memory and SSB VFO vs. Memory Mode ats20 radio manual better
The ATS20 runs on 5V DC via USB-C. However, it is . If you plug it into a cheap phone charger, you will hear digital buzzing across all frequencies.
: Press the TUNE button to automatically search for the next available station.
: Use the toggle switch on the rear, then press and hold the red button on the front panel for approximately 3 seconds. Do not leave it plugged into a computer
The included telescopic whip antenna is adequate for local FM and strong AM stations, but weak shortwave signals require help.
Solution: Check if headphones are plugged in securely, or ensure the volume encoder is turned up. Tuning skips numbers or feels erratic.
Stock encoders can wear down. A tiny drop of electronic contact cleaner inside the encoder housing often restores perfect functionality. To help tailor this guide further, tell me: Why a "Better" Manual Matters Happy listening
Press and hold the knob to enter the menu. Here are the 5 settings you actually need to care about:
is designed to be operated using the rotary encoder (tuning knob) and the power/mode buttons.
Located directly below the OLED screen, these keys change behavior based on whether you tap or long-press them. Getting Started: Power and Basic Setup Powering On