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As you can see , the tvfool radar plot map shows that the main group of Tv stations are to the North East at about 50 degree magnetic compass direction.
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Here is how to aim antennas.
http://www.kyes.com/antenna/pointing/pointing.html.
Use a Real and Actual magnetic compass to aim antenna , do not trust a , cell phone , tablet and etc. compass.
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Install a.
http://www.antennacraft.net.
HD850 , All channel antenna.
Install the HD850 antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception.
The directions of reception at your location are , North East , North , West North West.
I recommend install the HD850 antenna outside clear of obstructions to the , North East , North , West North West.
A antenna system amplifier is not required.