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To receive Many Digital Broadcast Tv Stations/Channels.
Above the Peak of the Roof in such a manner that reception is not , obstructed , impeded , blocked , buy the roof and building in the directions of , North West , South South East , North East.
Install a ,
http://www.antennacraft.net.
HD1200 All channel antenna aimed at about 304 degree magnetic compass direction.
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 compass.
Can also buy the HD1200 antenna at ,
http://www.amazon.com.
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html.
Use the , ronard(911) , 5 foot tripod antenna mount.
http://www.ronard.com/34424560.html.
Use the , ronard(4560) , eave antenna mount.
http://www.ronard.com/ychim.html.
Measure around the chimney and use a , ronard(2212) , ronard(2218) , ronard(2224).
Buy the ronard antenna mounts at ,
http://www.ronard.com , or ,
http://www.amazon.com.
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Home Depot has 10 foot 6 inch lengths of , TOP RAIL , chain link fence , PIPE , to use as antenna mast pipe , low price of about 10 dollars.
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Install a ,
http://www.channelmasterstore.com.
CM3418 , 8 way distribution amplifier.
can also buy at ,
http://www.amazon.com
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As always , trees and tree leaves , plants and plant leaves , have a Negative effect on Broadcast Tv reception and so do buildings and other obstructions including your own roof and building.
Some and not all Negative Effects are.
Absorbing and Blocking Reception.
Multi-Path reflecting Tv Signals Bouncing All Around.
The Best Practice for Reliable Reception is to install the HD1200 antenna at a location that has the amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and building.