But if there's
significant difference in electrical potential, it's a good indication that
your radio grounding system needs work or re-thinking.

Maybe someone can post a link to a site with good grounding info.

I know you're right there John, I'm not txing yet so everything in my shack is
just receiving so I didn't think it'd make that big a deal.

But I spent about a whole day in just concentrating on each piece and properly
grounding everything and it was the best 'accesorie' ;-) I ever bought. The
difference in the noise floor, which was low to begin with because of my
location, dropped noticably......to the point that I think I actually posted a
thread in here trying to convince people, that if their receivers weren't
*properly* grounded to get out there and ground them. You won't be sorry,
heck with the lightening thing (even though it's a biggie), just in your dxing
experience.