hi, go to address,
http://192.168.100.1
and look for any values ending in dBmV or dB
need to post like this person has in this post.
http://www.cableforum.co.uk/board/12...em-signal.html
does the cable look kinked or bent at a sharp angle or damaged in any way?
it sounds like the drop cable to your house from the pit or cabinet