Improving the documentation for the ATS-20 radio involves addressing its "tinker-toy" nature by providing clear, advanced-level instructions that the standard quick-start guides lack . 1. Core Interface & Controls
button to toggle between AM, USB, and LSB (Single Sideband) for ham radio listening. : Rotate the TUNE/BFO/ATS knob. Press the
: Selects filter widths (0.5, 1, 1.2, 2.2, 3, or 4kHz) to improve signal clarity or reduce interference.