Recently I 'lost' one of my ATSC channels from my OTA lineup. I figured it was a transmission issue - until I read about four other posts with similar complaints from multiple locations. How many people have 'lost' a local OTA station recently, and I don't mean from the guide?
I lost CH 58 in Milwaukee, and no matter what I did, I got "771" errors. It was in the guide, but no good. If I looked at the signal meter, it was there, but tuning was all "771".
So -- drum roll -- I did a reset the antenna stuff, put in my correct zip code, and falsly added a secondary market -- a city 50 miles away with its own OTA stations. To be specific, in my case, Milwaukee is my market and I added Kenosha (50 miles to the South). That did it. It shook up "whatever" enough so that Milwaukee's 58 came back.
I think the fault lies with the station that owns CH 58, and the PSP info they send, and/or their broadcast signature. It's all beyond me. Anyway, that's my story. BTW, on my two H20s, I never lost 58. Things must be fussier with the HR21/AM21 combo., and its software.