Install a Winegard HD7082P All channel antenna (all channel antennas receive channels 2 thru 6 , 7 thru 13 , 14 thru 69) with a Antennas Direct CPA-19 preamp , aimed at about 25 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.solidsignal.com ,
http://www.winegarddirect.com ,
http://www.anazon.com ,
http://www.antennasdirect.com ,
http://www.starkelectronic.com ,
http://www.3starinc.com ,
http://www.warrenelectronics.com . Most attics have electric power , so install the preamp and plug in the preamp power supply right there in the attic.