Install a Winegard HD7698P antenna above the roof aimed at about 320 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
For one Tv connected use no splitter , no preamplifier.
For 2 Tv's connected use a common simple 2 way splitter. No preamplifier.
As always , trees and tree leaves do a real fine job of reducing or blocking reception and so do buildings and other obstructions.
It is best to mount the antenna at a location that has the least amount to no amount of obstructions of any type or kind in the direction of reception.
The Tv/s Must Channel Scan for the Digital Broadcast Tv Channels , sometimes named the 'Air Channels' or 'Antenna Channels' in the Tv setup menu because the Tv transmissions travel through the air from the transmitting antenna to the receiving antenna.
DO NOT scan for cable tv channels.