The last time I watched an OTA channel was about 2-3 days ago. I held down the power button for 4 seconds for a reboot. That's the only reboot I know. Still no change. I believe the antenna is a Wingard, it looks like the tail wing of a plane. Yes, I have the diplexor. The power meter is showing 85 for sat and 82 for air. I don't think the antenna moved. The signals are so strong when you enter them manualy into the RF screen. I could go up on the roof and try to tweek it. Software version 6.20 Target n/a