Whenever I push a button, any button, on the KPA-500, for example, to go from STBY to OPER, I hear an audible feedback tone. Very annoying. I’ve discovered that by setting CONFIG:SW TONE to OFF, it goes away… but then so do all the other tones the radio produces, tones I DON’T want to silence. Do I have any other options? Cheers. Richard Kunc ~ W4KBX