On Dec 4, 11:17*am, Mikepier wrote:
You did not mention, is this for HDTV? *If the cable is old like
RG58
or 59, it might not be able to handle the UHF bandwidth of HD
channels. If the 100ft cable you tested was RG6, and it worked,
that
would make sense. But as the other poster said, try testing the
cable
and see if there is continuity.

What??? RG-58 is 50 ohm IIRC and while RG-59 isn't the best coax, it
will pass HDTV RF properly. The best of the RG-59 is Belden 1505 and
is nearly as good as RG-6. I would look for corroded connections at
every junction point and replace when found. Any rodents chomping
through the cables?

G²