[TowerTalk] Feedline (choke) question

[David Gilbert]

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
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk