You can try one of these indoor Non amplified antennas ,
http://forum.tvfool.com/showthread.php?t=233 , aim the indoor Non amplified antenna at about 214 true - 197 degree magnetic compass. Here is how to aim indoor tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . Read and understand about , REAL Digital Broadcast Tv Channels , Virtual Digital Broadcast Tv Channels , Analog Broadcast Tv Channels ,
http://forum.tvfool.com/showthread.php?t=695 . I suggest for a roof top tv antenna the Winegard HD7694P antenna with the Winegard HDP269 preamp. The HD7694P is a smaller antenna with a wider forward beam width for the reception of the widely spaced groups of stations to the south east and south west. Here is how to aim outdoor tv antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . Here are places to buy tv antennas and etc. ,
http://www.solidsignal.com ,
http://www.starkelectronic.com ,
http://www.amazon.com