I recently got the Dish Network DVR 942 and it is great, but I can not seem to get any local HD channels over my roof-top antenna. I have bought two antennas and cannot get any signal at all. I first bought a Terk TV32 and could not get anything to register then I went to radio shack and bought a HUGE VHF/UHF antenna I think think it is about 128 inches long. I still could not pick up one single signal. I checked Antennaweb website and it says that I am about 25 miles from the broadcast antenna. I don't have that great of line of sight, but am still pretty close to the top of the hill (my zip code is 78240). My question is, with a big antenna like that, shouldn't I be about to pick up even 1% of a signal if I adjust the antenna in any direction? This is very frustrating because I really want local HD channels.