For reception of the digital Tv stations/channels in the green and yellow zones to the , north/east , south/east , south/west , west , north/west , aim a ANT751 antenna at about 155 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Use no amplifier for 1 or 2 Tv locations connected.
Use a Channel Master CM3414 distribution amplifier for 3 or 4 locations connected.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.channelmasterstore.com.