Ats-20 | Radio Manual

If you bought an "ATS-20" from AliExpress, eBay, or Amazon, verify which chip you have:

Internal 3.6V 800–850 mAh lithium battery, providing roughly 6–8 hours of runtime. Audio: Built-in 1W–2W speaker and 3.5mm headphone jack.

button to enter BFO regulation. This allows you to "clarify" the voice so it doesn't sound like a cartoon character. Bandwidth Filter ats-20 radio manual

Download the desired SI4732 sketch/hex file (popular variants include PU2CLR or Harduino firmware).

: Short press the BWS or Band button to cycle through FM, AM, and various SW (Shortwave) bands. If you bought an "ATS-20" from AliExpress, eBay,

Change the frequency tuning increment. This alters how fast the numbers change when you spin the main dial.

Used for voice communications on higher amateur bands (e.g., 20 meters and up). This allows you to "clarify" the voice so

The Static and the Signal