You live 3 miles and in direct line of sight of the Tv transmitters. The signals are so strong that the first 6 channels are marked with Red as Over The Top Strong. Try this , straighten out a paper clip and stick it in the connector at the back of the tv where the coax connects to. The transmissions are so strong that the paper clip will easly receive them. . Here is my next suggestion , at
http://www.solidsignal.com , order the Antennas Direct 1296F variable attenuator and the Terk HDTVi non amplified tv antenna. Connect the attenuator to the Tv with a short , very short , length of coax. Put the antenna in the window that is facing the transmitters. I would start with attenuator set at minimum. Also read and watch the video on double rescan at
http://www.dtv.gov. The transmitter signals are so strong that you may need to cover the connector on the back of the tv where the coax connects to with aluminum foil, forum the foil around the connector and do that part of double rescan when no antenna is connected. The purpose of doing the double rescan is to clear out the tuner. Also do the double rescan as part of using the paper clip as a antenna.