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Originally Posted by GrahamA
There are no problems with the connections on the coax. We have checked those connections. I hope there are no internal problems with the coax as that would take a major effort to solve at this point. I do not have coax testing equipment either, but I suppose I would have to get it if I rule out everything else after getting a Winegard antenna and trying that.
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We checked and double checked the coax cable and all connections.
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When you say you checked the coax, did you check for the following:
- Unintended shorts between the center conductor and the outer shielding
- Continuous connection along the center conductor from one end all the way to the other
- Continuous connection along the outer shielding from one end all the way to the other
Your report suggests that the TV signals should not be that hard to receive with a rooftop antenna, so I'm inclined to agree with Tower Guy that there is probably something (hopefully simple) broken / damaged / mis-configured in the existing setup.
Testing each piece separately (receiver, antenna, balun, FM trap, coax, amps, etc.), perhaps at a friend's house or some other known good location, might narrow down the problem through the process of elimination. Start with the most simple setup possible, make it work, and then add components one at a time until something stops working.