I suggest install a Channel Master CM 3010 antenna -->Without<-- the optional CM 3038 amplifier. Point the antenna at about 180 degree magnetic compass. Here is how to point Tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . . The Tv antenna needs to be level with the ground , not pointed up at the sky , not pointed down at the ground , not cocked at odd angles. Outdoor type Tv antennas receive the best when the antenna is not obstructed and can see the Tv transmitters with nothing in the way. . Read and understand this about , Real Digital Tv Channels , Virtual Digital Tv Channels , Analog Tv Channels ,
http://forum.tvfool.com/showthread.php?t=695