Started by trying to install the gear leg fairing nutplates. Realized I was there without a drill for the rivets. Did a short flight. 0.5 flight time, 1 landing. Went to the I-10 construction project. Radio squelch broke over there. Went a little bit West, then returned to airport. Radio squelch is VERY annoying. Varies w/ rpm, so ignition items are suspect. Checked ignitions on taxi in - turned each one off - still a buzz. Turned both off for a second - I think the buzz was still there, but need to try that again. Maybe power supply related? Need to pull cowl and check for loose / broken wire, but there was no over/under voltage indicated.
