how can I filter a hum from cable tv coax

I noticed a hum from my 1050. After investigating I discovered that if I disconnect the cable TV coax the hum is gone. I found the same hum a while ago however putting the coax through my panamax fixed it for a while now even with the panamax in the line it is still humming.

Does anyone know of a good filter for the cable coax ?

The Jensen filter is the one that I've heard is the most sure-fire solution.

I tried a google search on Jensen filter but didn't find anything. Do you know of any model numbers or other details that might help my search ?

BTW: Your Dad's art is wonderful. I love the sea turtle. Reminds me of some Hawaiian art I have seen.

I think I may have found it.

In case anyone else is interested now or in the future.
Model VRD-1FF
http://www.jensen-transformers.com/iso_vid.html

That's it - the VRD-1FF.