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TV Antennas and Reception
I am not suggesting replacing all of the cable in the house. If the outdoor antenna has a black box as part of the antenna , and the coax is connected to it then the antenna may have a built in/on matching transformer and that matching transformer may be bad. A good matching transformer and a long length of cable connected to one Tv will show that the reception of the antenna is good. And the long length of coax can be used to trouble shoot the distribution system by connecting at different points of the distribution system so as to find the part of the system that needs to be fixed.
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