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Old 28-Apr-2011, 4:57 PM   #5
Tower Guy
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Join Date: Dec 2009
Location: Delmar, NY
Posts: 1,236
Quote:
Originally Posted by Joe2011 View Post
When I rotate the LAVA toward the front of the house, away from the compass heading reccomended; I pick up a better signal. I do not get that improved signal when pointing the Winegard in that same "off compass heading" direction.
An FM trap?
That may mean that the Lava's internal preamp is overloaded, it may mean that the rotor calibration is off, or it may mean that the Lava has a distorted pattern on some channels.

Trees are often a bigger problem on UHF than VHF, so I'd start considering interference on VHF that does not bother UHF. Examples are a noisy computer or power line interference.

You can listed for power line interference using the AM radio in your car. Tune it to 530 and listen for buzzing. If the buzzing is very loud near your house or in the general direction of the VHF TV stations, you may need to have the power company resolve the problem.
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