To Prove that Digital Broadcast Tv Transmissions are Strong at your location , use one of these NON Amplified indoor Tv antennas connected to one Tv ,
http://forum.tvfool.com/showthread.php?t=233 . Here is how to point indoor Tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . radio shack also has a simple NON Amplified indoor tv antenna , catalog number 15-1874