The Tv stations are strong at your location. For a antenna in the attic install a Antennas Direct , Clear Stream 2 V . CS2V UHF/VHF antenna with the reflector screen removed , the CS2V antenna will receive the Tv stations to the , north/north west/west and south/south east. Buy the CS2V antenna at
http://www.saveandreplay.com.
http://antennasdirect.com
With the reflector screen removed aim the CS2V antenna at about 140 or 320 degree magnetic compass. It's the same difference either way because the CS2V is receiving at the front and back of the antenna with the reflector screen removed. Here is how to aim outdoor type antennas ,
http://www.kyes.com/antenna/pointing/pointing.html