Install a Winegard HD7696P antenna above the roof aimed at 144 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. Here are mounts that do not make holes in the roof ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com/34424560.html. . Here are places to buy antennas and etc. ,
http://www.winegarddirect.com ,
http://www.solidsignal.com ,
http://www.amazon.com. . The HD7696P antenna is a compact design , of heavy duty long lasting construction , so as to last a long time outside. Reception will be helped by bending the mast pipe , so the antenna is pointed at the at the top of the hill/mountain in the direction of the transmitters.