I recommend a Winegard HD7082P antenna installed above the roof in such a manner that the roof or house is not blocking reception to the , north west.
Aim the HD7082P antenna at about 300 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Here are some above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.winegarddirect.com.
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For 1 Tv connected use no splitter. No amplifier.
----> How many Tv's will be connected?? <----
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As always trees and tree leaves do a real fine job of reducing or blocking Tv reception and so do buildings and other obstructions including your own house.
It is best to install a antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception of reception including your own house.
The Tv/s Must Channel Scan for the Digital Broadcast Tv Channels , sometimes named the 'AirChannels' 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 channel scan for cable tv channels.