I bought a Dish network 1000 antenna on Ebay so I could use my 722 DVR when I go camping. I'm trying to figure out out to aim it at home by pointing it in the same direction as the one on my roof. The one on my roof works fine but when I connect the Ebay antenna the DVR can't find the satellites. The antenna I bought is identical to the one on my roof. Could it be possible the LBN could be bad? It is a used antenna. Any help would be appreciated. Thanks, Jim