: Use battery power whenever possible. Charging while listening often introduces significant mains hum and electronic noise into the receiver. Documentation
: This is a highly recommended "better" manual if your radio uses the popular Goshante (ATS_EX) firmware. It provides a detailed breakdown of all button functions, including long-press actions for band scrolling and volume adjustment. You can view it on GitHub or download a formatted version from Device Report . ats20 radio manual better