Glad it worked, thought that was the issue. LTE and 5G infrastructure is really goofing up the OTA, especially since the frequencies have shrunk and the antennas still pick those signals up.Just a followup. I did order the LTE filter from Amazon and I finally got around installing it on the roof today. Man 30C is way hotter on a metal roof. Anyway, the good new is that it did the trick as suspected. My area must have tons of LTE tower and messing mu all my RF 30+ channels. The signal strength was there was the quality was really low and when I read somewhere that pixelated picture means interference, I had to try.
Now ABC, CBS, NBC and PBS are all coming like before without any issues aside from really bad cloudy days.
I was cheap and based on the reviews, I went with the Philips LTE filter. It is the lowest price ($10 cheaper than others) that I can see on Amazon. So you can save a little money and go with the Philips.
I couldn't get one station and tried the filter - it worked. People buy them and find out that's not their issue, then leave bad reviews for the filter. Lots of trial and error in TV reception.