Ok, rob, I took what you origianlly said the wrong. I guess we were agreeing to agree. Sorry about that. Anyway, you know its not always in your house believe that or not. If joe smoe neighbor's grounding sucks, or inproper, and he has RF devices, that are real noisy, it can contamiate your power also. I have seen this in pipe grounds in apartment buildings.

I can't say I have heard of dirty power, but knew what he meant.

I know I am beating a dead horse. I just miss my electonics days. Seems I manage more than design these days.