CATV humm - Solution ? (1 Viewer)

[Rick Chaisse]

More and more I'm running into systems with a hum caused by the connection to the local RG-6 CATV. Recently, I spent a lot of time isolating the problem and even re-located the catv ground wire but it didn't help.
My question.. does anyone know of a product that can isolate the RG-6 from the system without noticeable degradation to the signal ?

 

[Ken Custodio]

yeah, use a Cheaters Plug The plug adapter that turns a three prong plug into a two blade plug. I have been using it for a few months now and it got rid of the cable hum right away and no picture quality loss. I would use this as a last resort, the best solution is to ground the CATV to the same ground as the electrical panel. Most likely if you can ground the CATV to a Cold Water pipe that would do the trick. I can't do that with the setup of my house, so there is an electrical potential between the grounds of the electrical service and the CATV, so I have to use a cheaters plug.

 

[Rick Chaisse]

There aren't any 3-prong plugs on the system to lift. And I have relocated the ground to the electrical panel.. no change. I think I need a coax ground lift (?).
But, thanks for the suggestions.

 

[Mike Matheson]

Hi Rick,
Cable hum is a common problem. Lots of info can be dug up by searching the forum using keywords "cable hum" or similar.
Example threads (with suggestions for isolators):
Loud humming, help!
75-300-75 Hum Fix Really Degrades My Cable! Alternatives?
Hope this helps,
Mike

 

[Chu Gai]

consider either of these two products...no doubt, there are a slew of others.
Jensen VRD-1FF $60
CBl ISO $40
sounds though like you really haven't addressed the ground issue.