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What is the make and model number of the Tv??
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Are you saying that No antenna system amplifier is connected??
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Go into the Tv Setup Menu and select and channel scan for , ATSC-Digital Broadcast Tv Stations/Channels , Antenna Channels , Air Channels.
DO NOT channel scan for cable tv channels.
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http://www.summitsource.com.
Sells the Gray Hoverman antenna , that is made buy , Antenna Craft , special , for Summit Source.
Model number G 1483 and Supper G 1483 .
And sells 3 versions , 4 bay , 8 bay , 16 bay .
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The Gray Hoverman is Old antenna design that appeared in Do It Your Self electronic and Ham radio magazines , Many Years Ago.
Antenna Craft , Improved the original design and begin to manufacture and sell the antenna through Antenna Craft sales Many Years Ago.
Now the antenna is sold through Summit Source.
The Gray Hoverman antenna is a Basic Fractal Antenna Design and was thought of , long before computer generated antenna designes.
And the BowTie and X pattern antenna designes are also , basic fractal antenna designes that were thought of long before computer generated antenna designes.