Manual Verified: Ats-20 Radio

Press and hold the POWER button until the OLED screen lights up.

While official paper manuals are often scarce or briefly included, the device follows an intuitive interface: ats-20 radio manual

At its core, it's a full-waveband radio that leverages the powerful . This tiny chip is the radio's "heart" and does all the heavy lifting for signal reception. The ATS-20 then combines this with an Arduino Nano (ATmega328P) running the show and a crystal-clear 0.96" OLED display for the user interface. Press and hold the POWER button until the

The included whip antenna is okay for outdoors but struggles indoors. Connecting a long wire antenna via the BNC jack dramatically improves shortwave and AM reception. The ATS-20 then combines this with an Arduino

: A critical toggle for preventing strong signals from overloading the sensitive Si4732 chip. Step Selection : Allows you to jump between frequency increments of The "Interesting" Twist: Manual as a Living Document

| Button | Short Press | Long Press (2 sec) | | :--- | :--- | :--- | | | Turn on/off (standby) | Enter VFO (Variable Frequency Oscillator) mode | | BAND/VM | Change band (AM/FM/SW/LW) | Enter VM (Variable Memory) / Memory recall | | STEP/AGC | Change tuning step (1kHz, 5kHz, 10kHz) | Toggle AGC (Automatic Gain Control) on/off | | Filter/Mode | Change bandwidth (e.g., 6kHz, 4kHz, 2.2kHz) | Switch receive mode (AM/LSB/USB) | | Volume/Squelch | Adjust volume (0-63) | Adjust squelch level | | Encoder (Knob) | Tune frequency | Fast tune (10x step) |