Leave the existing AC panel ground alone! Make sure that you tie your new
ground to the existing power panel ground. Failure to do that can result in
unnecessary damage in the event of a nearby lightning strike because the two
separate grounds could be at vastly different potentials. The damage could
be to your equipment or home. I'm sure your homeowner's insurance company
would not look kindly at your having removed the power panel ground,
resulting in damage to your home.

"Tim Shoppa" wrote in message
om...
Gray Shockley wrote in message
...
He maintained the electrical ground ("earth") and he created an
"antenna"
ground (chassis).

Yeah, that's what I did, and it worked very nicely. But it's also clear
that the ground at the AC entrance panel isn't doing so well itself. I've
got to find the relevant section of the NEC and figure out how I can
both comply with the code *and* put a ground there. I'm 100% sure that
what
I did (5 foot copper pipes) for the radio ground isn't compliant for the
AC entrance ground.

Tim.