As always , attics and the inside of buildings Are Not a reception friendly environment and Never Will Be a reception friendly environment.
Reasons:
Multi-Path/Reflections , signals bouncing around.
Absorbing Tv reception.
Blocking Tv reception.
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Install the Channel Master CM4228HD in the attic aimed at about 210 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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If required for better reception , install a CM7778 preamp.
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As a Test of reception of both the Columbia and Charlotte Tv stations at the same time with one CM4228HD antenna.
Above the Peak Of The Roof in such a manner that the roof and building are not impeding and blocking reception in the directions of Columbia and Charlotte.
Install the CM4228HD UHF/VHF antenna aimed at about , 350 degree magnetic compass direction.
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If required for better reception , install the CM7778 Preamp.
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A Winegard , DS3000 , J pole type antenna mount works well with CM4228HD antenna.
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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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Digital tuners can develop -Digital Glitches- that are not cleared out with simple channel scans.
Do Double Rescan.
http://www.wchstv.com/DoubleRescanAlert.pdf.
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It is also a good idea to rescan from time to time because New Digital BroadcastTv stations/channels can begin transmitting at any time with no notice.
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