Interesting. I don't have DirecTV but my parents do. My fiance and I have been to their house twice this past week, and on both occasions, I noticed blockiness and even pixelation on non-local channels. Their dish installation was done 1 month prior and I didn't think to check signal quality, but you might be on to something.
Can't really comment on picture quality degradation compared to before this last week...haven't really spent enough time watching TV at their house, but I'll survey my dad about it tomorrow when I see him.
Have you only noticed this over the past week? What does your signal quality look like?
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