Ats-20 Radio Manual · Deluxe & Latest
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Si4732 + ESP32 / ATmega328P (depending on the hardware revision) Supported Modes: FM, AM, MW, LW, SSB (LSB and USB)
Whether you keep it stock or dive into the world of Arduino‑based radio development, the ATS‑20 will provide hours of exploration across the airwaves.
Tune to a known ham radio allocation (e.g., 7,100 kHz on the 40-meter band). ats-20 radio manual
Click "Upload." The software will compile and send the firmware to the radio. This process takes less than a minute. When complete, the radio will either show a new display or you will need to power-cycle it manually. You should now have a completely new user interface and feature set.
Because the ATS-20 uses a compact receiver chip, its performance depends heavily on your environment and antenna configuration.
| Feature | Details | |---------|---------| | | FM: 76.0 – 108.0 MHz ; LW: 100 – 510 kHz ; MW: 520 – 1720 kHz ; SW: 1.72 – 26.2 MHz (continuous) | | Modes | FM, AM (MW/SW), SSB (LSB/USB), CW | | Display | 0.96‑inch OLED | | Tuning steps | 1 kHz, 5 kHz, 10 kHz (depending on band / firmware) | | Audio filter bandwidths | 0.5, 1, 1.2, 2.2, 3, 4 kHz | | Pre‑configured bands | 22 commercial and ham‑radio bands | | Antenna connector | SMA | | Audio outputs | 3.5 mm headphone jack + 1.5 W speaker output (8 Ω) | | Battery | Internal 3.6 V 800 mAh polymer lithium (rechargeable via USB) | | Arduino core | ATmega328P (embedded Arduino Nano) | | Firmware updates | Via Mini‑USB port (not the USB charging port) | If you need help with a specific part
A physical slide switch or button to completely disconnect the battery and prevent passive drain. 3. Step-by-Step Operating Instructions Powering Up and Basic Tuning
Use for amateur radio bands below 10 MHz (e.g., 40-meter band).
Since the ATS-20 shares architecture with the more advanced ATS-25, their manuals are often used interchangeably for firmware-related functions: Tune to a known ham radio allocation (e
Understanding the hardware capabilities helps you maximize performance. SI4732 (highly integrated broadcast receiver chip) Frequencies Covered: FM: 64 – 108 MHz (supports RDS where applicable)
Tuning Single Sideband (SSB) requires a steady hand and precise configuration to decode Amateur Radio voice transmissions.