Have a ht1250 VHF. Recently reprogrammed it myself, changed a few things to my liking. Sometimes when I boot the radio, the Self Check "Beep Beep" tone sounds and all is well. Once every few starts, the radio will sound the self check tone and then continue with three quick chirps This will continue until I press any button on the radio, or move the Ch Knob. It is detailed in this video, you can hear the tone in question and when I hit the PTT button it stops. The chirp following is just the battery tone. Any idea what this is and how to stop it? Not a problem, just odd.