This recommendation is based on the tvfool digital channels radar report for current and Pending Applications Included of 02-10-2012. Your location has many digital tv stations/channels that are LOS = Line Of Sight , all around the compass. Install a Channel Master CM3000A antenna about 25 feet high above ground. Here are some roof top antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html. Here are places to buy antennas and etc. ,
http://www.channelmasterstore.com ,
http://www.amazon.com ,
http://www.solidsignal.com. Buy the Ronard antenna mounts from Ronard or Solidsignal. Or use the Direct tv mount , the antenna must clear and not be blocked by the roof for good reception all around.