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5V DC input for charging the built-in 3.7V lithium battery. 3. Basic Operation Guide
Port to connect the included whip antenna or external antennas.
Ultimate ATS-20 Radio Manual & User Guide The ATS-20 SI4732 receiver is an incredibly popular, budget-friendly, and powerful multi-band radio. It allows radio enthusiasts to listen to everything from standard commercial FM stations to long-range shortwave and amateur radio broadcasts. ats-20 radio manual
The LED changes color (often to green or blue) or turns off completely when the battery is fully charged.
Connect the Type-C USB cable to a 5V phone charger or computer port. Let it charge for at least 2 hours. Ensure the physical power switch is set to ON during charging if required by your specific firmware variation. Loud Static/Buzzing on All Shortwave Bands 5V DC input for charging the built-in 3
Shortcut: Pressing down on the rotary knob itself can often toggle fast-tuning modes or step sizes, depending on your firmware version. Operating Single Sideband (SSB) Mode
Press the button repeatedly to cycle through the pre-programmed global radio bands: Ultimate ATS-20 Radio Manual & User Guide The
The stock telescopic antenna is generally weak indoors. For optimal performance, connect an external wire antenna (like a random wire antenna or a magnetic loop antenna) to the BNC port. Even stringing 20-30 feet of speaker wire out of a window will dramatically increase the number of signals you hear.
Toggles through the primary radio bands (FM, AM, LW, MW, SW).
Since official PDFs are rare, users often rely on documentation for similar models like the , which shares many firmware functions.
