I own a q60r 4k TV, one time I did a channel scan and got 165 channels. The following day, some of my hard to reach channels either pixelated or I get an error message saying antenna not connected. I did another scan and got 150 channels, losing the 15 channels that either pixelated or gave me the not connected message. The day after that, I scanned again and got all 165 channels back. We have not had incremental weather during this time. I also checked my roof antenna and it does not appear to have been moved by wind, rain etc. Why does this happen? How do I make sure I keep my 165 channels?
