Possibly I missed it, but I don't see your EZNEC model. I only saw the
diagram. Can you send me the model?
Dave AB7E
On 9/30/2025 1:29 PM, Brian Beezley wrote:
"It just shows current going back and forth between the earth and the
coax."
Dave, I don't know what you mean by back and forth. In my model, the
ground wire simply has current. It is about three times that heading
toward the transmitter. So it is diverting about 75% of the
common-mode current before it reaches the shack. It's not as if the
ground wire did nothing.
I suspect a good CM choke would be more effective than a ground. But
if I had access to a decent ground outside my shack and I had CM
problems inside, I'd try the ground first, as long as accessing the
shield didn't compromise cable integrity. It might just solve the
problem.
Brian
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