When some one says they are using the satellite Tv mount then I know there will be trouble because the small dish satellite mounts are mounted at odd angles. Here is how to point Tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html , is the antenna pointed up at the sky ? is the antenna pointed down at the ground ? is the antenna cocked at odd angles ? is the roof of the house blocking the front of the antenna ? I suggest a Winegard HD7084P antenna on the roof with a tripod antenna mount or a chimney mount or peak of the roof eave mount. No preamp or any other type or kind amp. The Tv transmissions are all strong.