[jerrymc]

I seem to recall someone here that had this issue.

Channels are good during the day. We had a couple evenings when temps dropped in the 40s. All UHF Stations dropped completely. As soon as sun arose and got a bit warmer, stations returned.

We had no issues with U-VHF Stations.

Could this be a bad CM7777 Preamp?
Or is this simply an environmental issue based on our location?

Thank you for any light on this subject.