Many units come with or can be upgraded to Goshante's ATS_EX firmware or similar versions, which unlock deeper settings:
If SSB sounds like chipmunks (high pitched) or Darth Vader (low pitched), do not touch the main tuning knob. Go into the menu and adjust BFO until human voices return to normal. ats20 radio manual better
The ATS-20 relies heavily on its (the main knob) and a few key buttons. Here is the logic you actually need to know: Many units come with or can be upgraded
The ATS-20 uses a minimalist design, which is great for portability but can lead to a "button-mashing" frustration. The core of the experience is the (the main knob). ats20 radio manual better
button to change the tuning increment (typically 1kHz, 5kHz, or 10kHz). : Use dedicated VOL+ / VOL-