Manual Portable - Ats-20 Radio

button to toggle between filters (0.5, 1, 1.2, 2.2, 3, and 4 kHz) to cut out nearby interference. Hardware Pro-Tips for Better Reception

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

Cycle through 1.0kHz, 1.8kHz, 2.0kHz, 2.5kHz, 3.0kHz, 4.0kHz, and 6.0kHz. ats-20 radio manual

Search terms used: ATS-20 radio manual, ATS-20 plus manual, Si4732 radio instructions, ATS-20 Pro SSB tuning, ATS-20 hidden menu, ATS-20 firmware update.

One of the best features of the ATS‑20 is that it is essentially an . You can upgrade the firmware using the Arduino IDE and a Mini‑USB cable (connect to the Mini‑USB port next to the charging port – not the charging port itself). button to toggle between filters (0

The ATS-20 is more than just a radio; it's a project and an entry point into the rewarding worlds of amateur radio, open-source hardware, and programming. As you use it and begin to explore its capabilities, you will quickly discover its true potential. This guide, collected from the community, is your starting point. The rest is up to you—happy listening, and may the signals be strong!

| 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) | Search terms used: ATS-20 radio manual, ATS-20 plus

You are slightly off-frequency. Change your tuning STEP to 1kHz or the smallest available increment, and slowly turn the encoder knob up or down until the voice sounds natural. This process is called "fine-tuning" or "clarifying."

Si4732 + ESP32 / ATmega328P (depending on the hardware revision) Supported Modes: FM, AM, MW, LW, SSB (LSB and USB)

0.96" OLED showing frequency, signal strength, and settings.