-->As always<-->attics and the inside of buildings Are Not a reception friendly environment and Never Will Be a reception friendly environment.
Multi-path/reflections Tv signals bouncing all around.
Absorbing Tv signals.
Blocking Tv signals.
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Above The Peak Of The Roof in such a manner that reception is not impeded and blocked by the roof and building in the directions of , North East , North , North West , West.
Install a Channel Master CM2016 antenna , aim the CM2016 at about 34 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing.html.
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A Winegard , DS3000 , J pipe type antenna mount has flexibility of use for installing the CM2016 and other antennas.
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Install a Winegard , LNA-100 'Boost' , antenna system amplifier.
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For 1 Tv connected use No splitter.
For 2 Tv's connected use a simple common 2 way splitter.
For 3 Tv's connected use a simple common 3 way splitter.
For 4 Tv's connected use a simple common 4 way splitter.
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Here are some places to buy antennas and etc. .
http://www.solidsignal.com.
http://www.amazon.com.
http://www.channelmasterstore.com.
http://www.winegarddirect.com.
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As always , trees and tree leaves , plants and plant leaves , have a Negative effect on Broadcast Tv reception ,
multi-path reflections ,
absorbing ,
blocking ,
reception and so do buildings including your own roof and house and other obstructions in the directions of reception.
The Best Practice is to install a Tv antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and house.
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The Tv/s Must Channel Scan for the , OTA=Over The Air , Digital Broadcast Tv stations/channels often named the , 'Air Channels' or 'Antenna Channels' in the Tv Setup Menu because the Tv transmissions travel through the Air from the transmitting antenna to the receiving antenna.
Some digital tv's will Automatic channel scan for cable tv channels.
DO NOT channel scan for cable tv channels.
Go into the Tv setup menu and select 'Air Channels' ~ 'Antenna Channels'.
Scan for channels.
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If little to no importance concerning or understanding of obstructions to reception.
If not willing or able to avoid obstructions to reception.
Then install a bigger antenna for more reception ability of a bigger antenna.
Install a Winegard , HD7698P antenna.
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