To start with I recommend a 10 foot tripod on the roof ,
http://www.ronard.com/Tripods%200703/4712.html. And shoot for these stations , WUPX-DT 21 ION Television , WDKY-DT 31 FOX , WKYT--TV 36 CBS , WTVQ-DT 40 ABC , WLEX-DT 39 NBC , WKMR-DT 15 PBS. I recommend a
http://www.antennacraft.net , U8000 antenna aimed at about 80 degree magnetic compass. The U8000 can be modified to receive in 2 directions buy drilling out the rivets of the flat metal clips that hold the reflector rods in the horizontal position , remove the the reflector rods and now the U8000's >< shaped metal reception elements will receive in 2 directions , no rotor needed. Or the U8000 can be put on a rotor. For a preamplifier I recommend a ,
http://channelmasterstore.com , CM7778 preamp.