My hdhomerun rescans every x..not sure. Anyways, some days a weak channel gets in the list....I hide the channel.....the next scan, the channel is gone....a scan or two later, it shows up and I have to hide it again. Rinse, repeat.
Instead of editing the tuner each time to hide it, maybe have a quick hide for anything that may catch my eye in the guide... If something like this exists and I am unaware, please let me know.