OK. I disconnected it, and here is all it says on the unit:

CABLE/VCR
GROUND BREAKER
FEED-THRU
SURGE PROTECTOR

I am going to to a web search now....
http://www.xantech.com/products/groups/pgrp_040.htm

They have them (model number 634-00)

Good luck!

Kevin Staggers wrote:
>
> > 4. buy a 'Ground Breaker' for $10.50CDN from Commercial Electronics in
> > Vancouver, BC.
>
> I'm going to look for one of these the next time I'm near an electronics
> shop.  Any additional info on the product would be greatly appreciated.
>
> Thanks for solving my problem, I kept looking at something in the PC
> causing it, never even thought about the CATV.  (Which I had recently
> plugged into the receiver, it wasn't before.)
>
> Kevin

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