The Tv Stations you will like to receive are at 162/159 magnetic compass and are LOS = Line Of Sight and are Strong. Here is information about indoor antennas
http://forum.tvfool.com/showthread.php?t=233 . Here is information about Real and Virtual Digital Tv Channels
http://forum.tvfool.com/showthread.php?t=695 . The nonamplified Free Vision should be receiving very well. Here is information about aiming antennas
http://www.kyes.com/antenna/pointing/pointing.html . Yes you can try the Free View in the attic. However as you know , the best place is on the Roof. . Connect the 2 Tv's with a passive 2 way splitter.