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In Reply to: RE: How do I eliminate hum? posted by computerman on June 21, 2012 at 18:05:35
different ground potentials caused by grounding to different places is the cause of the problem.
Ideally everything electrical in your system should have the same ground point of reference.
Follow Ups:
Most cable systems use their own ground ( usually a rod driven in the ground next to the cable entrance), while most modern construction homes will use a UFER ground which will be a different potential than the electrical ground.
Russ
Sorry.. I meant to say the cable ground will be a different potential than the house electrical UFER ground.
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