[Elecraft] Counterpoises and Grounding

Jim Brown jim at audiosystemsgroup.com
Sat Jun 10 16:36:16 EDT 2017


On Sat,6/10/2017 12:39 PM, Fred Moore wrote:
> Jim, lets stop talking about grounds totally when dealing with RF, it's
> just a confusion factor when it comes to discussions.

That's what I said.

>   unless we are
> talking about as NEC and others when they correctly call it a "Safety
> Ground" or a "Grounding Conductor" and make sure that everyone
> understands the difference..  most don't
>
> discussions should be about
>
> Safety Grounds, and grounding conductors 100% about 60 cycle and DC currents
> common connection points  100% about how the above are connected
> counterpoises, radiating elements: deals 100% with RF and antenna's
>
> etc.. properly understanding each one and you won't be confused at all..

I've written extensively on this topic, and both that writing and 
several slide shows are on my website. k9yc.com/publish/htm

>
> I also disagree with your statement
>
> "First, and most important, for lightning protection and electrical safety."
>
> The first and most important item is an electrical Safety Ground as it
> protects people, they can't be replaced.
> Second is lightening protection, as it typically protects equipment.
> equipment can be replaced
Again, I refer you to my website.
>
> They don't carry the same weighting factor.. as very few worldwide are
> killed from lightning vs improper safety grounds.
They are not different. Again, see my website. ALL grounds in a premise 
MUST be bonded together. PERIOD. Power entry, Telco entry, CATV entry, 
antennas, shack, etc. These connections must NEVER be separate or 
independent of each other.

> most likely the only thing we don't agree on..  everything else you seem
> spot on...

I think what you view as disagreement is my failure to write well enough.

73, Jim K9YC


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