The radio's potential is often unlocked through community-developed firmware like Goshante (ATS_EX) Bandwidth (BW)
: Operates on a 3.6V lithium battery and supports USB charging. ats20 radio manual better
Tuning into Ham radio requires precise steps (as small as 10Hz) and BFO (Beat Frequency Oscillator) adjustments to make voices sound natural instead of like "Donald Duck". Button Shortcuts: Advanced firmware lets you use the ATS-20 (and ATS-20+) is a compact, DSP-based all-band
Modifying firmware voids warranty but enables extra features (e.g., RDS, spectrum scope). Narrower = less noise, worse fidelity
ATS-20 (and ATS-20+) is a compact, DSP-based all-band radio receiver powered by the
| Menu Item | What it actually does | Recommended Setting | | :--- | :--- | :--- | | | Automatic Gain Control. Keeps loud stations quiet and quiet stations loud. | ON (for AM/SW) / OFF (for SSB) | | BW | Bandwidth. Narrower = less noise, worse fidelity. Wider = better music, more hiss. | AM: 2.2 kHz / SSB: 1.8 kHz | | SQ | Squelch. Mutes the speaker until a signal breaks through. | 1 (lowest) or 0 (Off) | | SSB | Switches to Single Sideband (USB/LSB). | LSB for <10 MHz / USB for >10 MHz | | BFO | Beat Frequency Oscillator. Fine-tunes SSB voice pitch. | Adjust +/- 50 Hz for clear voice | | Step | Tuning step size. 1 kHz is fast but imprecise. 10 Hz is precise but slow. | SW: 100 Hz / SSB: 10 Hz |