Most of the group of tv stations at about 256 degree magnetic compass are showing some co-channel interference and are much weaker in signal strength. For reception of the group of tv stations at about 256 degree magnetic compass use a Winegard HDP269 preamp with the HD7084P antenna. And a rotor. The HDP269 preamp can also be used with/for receiving the the group of tv stations at about 70 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . Here are some places to buy antennas and etc. ,
http://www.winegardgarddirect.com ,
http://www.solidsignal.com ,
http://www.amazon.com.