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Attics Are Not a reception friendly environment and Never Will Be a reception friendly environment.
Most of the Tv stations are weak signal strength at your location.
Please install the C290 antenna above the peak of the roof in such a manner that the roof and house are not , obstructing , impeding , blocking , reception in the direction of East.
Aim the C290 antenna at about 100 degrees magnetic compass direction.
Here is how to aim antennas ,
www.kyes.com/antenna/pointing/pointing.html .
Use a Real and Actual magnetic compass to aim antenna.
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Here are some above the roof antenna mounts.
www.ronard.com/909911.html
Use the , ronard(911) , 5 foot tripod antenna mount.
www.ronard.com/34424560.html
Use the , ronard(4560) , eave antenna mount.
www.ronard.com/ychim.html
Measure around the chimney and use a , ronard(2212) , ronard(2218) , ronard(2224) .
Buy the ronard antenna mounts at ,
www.solidsignal.com , by typing , ronard(x) , in the solidsignal search box or buy from ,
www.ronard.com .
As Always , trees and trees leaves , plants and plant leaves , have a Negative Effect on broadcast Tv reception and so do buildings and other obstructions including your own , attic , roof , house.
The Best Pratice is to install a 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 , attic , roof , house.
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Digital Tv tuners can develop - Digital Glitches- that are not cleared out with simple channel scans.
To clear tuner do Double Rescan.
www.wchstv.com/DoubleReScanAlert.pdf