"KJ4NTS" wrote in message
...

On 3-Aug-2009, Brad wrote:

Is this intended as an RF ground or lightning protection?

Primarily an RF ground since the antennas will be in my attic. However, I
would appreciate the
information for both cases.

I think code calls for #6 solid Copper or Aluminum for lightning protection.
Consider the 50 ft as part of the antenna though. Rather than even trying
to have an RF "ground" try to make a counterpoise instead. Read up on the
difference between RF ground, lightning ground, and electrical ground. You
don't say what kind of antenna.