Almost bought one but decided to check where I'd be able to put a F/F device in my run. Seems in the attic where the antenna is was my best option, but while I was up there, I just double-checked my antenna pointing. According to Antennaweb.org, which provides mostly a visual based on Google Maps, I was pointing right. But according to a compass and a Digital TV antenna app on my phone, I was off a few degrees.
Re-aligned my antenna and so far so good, the channel group (13.1, 13.2, 13.3) that was experiencing horrible pixelation and showing 3 orange dots in the channel finder, now have 5 greens and no pixelation. It really was just a matter of a few degrees, but it is the weakest signal for me, so it was apparently enough degrees!
Thanks again to all on this board for sharing info and suggestions.