The FCC web site shows that , W33AK is transmitting on UHF 33 not VHF 3 , And W39AR is transmitting on UHF 39 not VHF 4. This being the case , a Big antenna to receive the VHF low band channels of 2 thru 6 will not be needed and a smaller antenna can be used. I recommend a Winegard HD7697P antenna mounted on a Channel Master CM9521A rotor , to rotate the antenna to the stations to the north east , the one station to the south east and the stations to the south west. Here is how to aim a antenna ,
http://www.kyes.com/antenna/pointing/pointing.html. A preamp will not be needed. Here are some antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/engineered-rotor-ready-chimney-mout-3324.html. Here are places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.starkelectronic.com ,
http://www.3starinc.com. Here is the FCC information for W33AK and W39AR ,
http://transition.fcc.gov/fcc-bin/tvq?call=W33AK ,
http://transition.fcc.gov/fcc-bin/tvq?call=W39AR