question...are you using a new LNB or the old LNB? Your receivers have to match the LNB. Last year, I had a new LNB on my house but on my park model, I had an old LNB...this will not work. The receiver has to be tweaked once a new LNB is installed. Right now in Yuma, I am getting a signal strength of 90%+ with the large 75cm dish. With the small dish, HD can be a problem. The channel menu is different here as the first 30 or so channels are not available but, you can get them up higher in the channel range but it may not be in HD.