The following is a Teleview recommendation for broadcast Tv reception.
Tvfool channel list , lists both the True direction and Magnetic compass direction.
The 137 degree magnetic compass direction , is to focus attention on the weaker tvfool listed digital Tv stations/channels at 137 degree magnetic compass direction.
As always , the starting aim direction is --> the starting aim direction.
The antenna can be turned to the left and right to find a aim that has the best reception.
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For 1 Tv connected use no splitter.
For 1 Tv connected a amplifier will most likely not be required.
For 2 Tv's connected use a Channel Master CM3412 distribution amplifier.
For 3 or 4 Tv's connected use a CM3414 distribution amplifier.
http://www.channelmasterstore.com
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The following is a incomplete list of substances and locations that do a real fine job of reducing or blocking Tv reception.
Concrete , concrete roof tile , concrete blocks , cinder blocks , bricks from ground to roof , big rocks for walls , stucko Wire , metal siding , metal roof , metal backed insulation , duct work in the attic , solar panels , Tv antenna in the basement.