Danny Richardson wrote in
:

On Mon, 30 Jul 2007 13:40:27 +0000 (UTC), John Passaneau
wrote:

I want to follow on what some of the other have said.
First to only reason to have an RF ground in you shack is if you are
going to use an antenna that brings part of the antenna that is
supposed to radiate RF into the shack, as an example, a long wire
antenna. Dipoles, beams and verticals that are feed with coax do not
need RF grounds in the shack

Not true. Feeding an antenna with coax does not remove the need for a
station ground and here's why:

http://k6mhe.com/sub/BlancedFeedLine.pdf


Danny,K6MHE


Hi:
Interesting web site, but what I meant to say and didn’t do well, is
that if the antenna is installed properly and feed properly with coax
and a balun or open wire line that is properly balanced, there will
never be RF problems that an RF ground in the shack will solve. I had a
problem with 80 meters at high power turning on my furnace. It was
caused by the thermostat line being near resonate at 80 meters. All the
RF grounds in the world would not have helped that, a clamp on ferrite
choke did. It is very hard to get a RF ground in a second floor room.
The idea that one or more ground rods or ground rods and radials outside
with a length of wire running up to a second floor shack will be
anything close to an RF ground at any Ham frequency is just plan wrong.
How ever a lighting ground is a necessity and ground rods work quite
well for that.

John Passaneau W3JXP