I'll chime in a bit here.
DirecTV has been both here at WANE and over at WISE several times over the last few months working on the problem. So I can attest what ENGjas is saying that they are working on it.
Yes, the signal leaves WANE (in DirecTv's case) via fiber.
On a personal note, lately 33 has been coming in quite nice for me at my home about 20 miles south of the towers; whereas before it was a bit of a crap shoot. So any adjustments that they are making IMO are...