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-   -   Antenna earth stakes - a tricky one! (https://www.radiobanter.com/antenna/126404-re-antenna-earth-stakes-tricky-one.html)

Richard Harrison October 26th 07 05:41 PM

Antenna earth stakes - a tricky one!
 
Stefan Wolfe wrote:
"The best earth ground is obtained by creating 180 1/4 wavelength
radials from the base of the vertical element".

Adequate but likely overkill. This was all settled in 1937 by RCA`s
Brown, Lewis, and Epstein. See Fig. 2.19 on page 120 of Ed Laport`s
"Radio Antenna Engineering".

Best regards, Richard Harrison, KB5WZI


Roy Lewallen October 27th 07 01:33 AM

Antenna earth stakes - a tricky one!
 
Stefan Wolfe wrote:

Yes, radials simulate a true earth ground by empirical test. They are an
excellent counterpoise...the best. But by definition, they are not earth
ground.


That's interesting. What's a "true earth ground"? What are its
properties? How could you connect an antenna to it?

Roy Lewallen, W7EL

Roy Lewallen October 27th 07 04:45 AM

Antenna earth stakes - a tricky one!
 


Stefan Wolfe wrote:
"Roy Lewallen" wrote in message
...
Stefan Wolfe wrote:
Yes, radials simulate a true earth ground by empirical test. They are an
excellent counterpoise...the best. But by definition, they are not earth
ground.

That's interesting. What's a "true earth ground"?


It is the reference point to which all electromagnetic phenomena on Earth is
at zero potential.

What are its properties?


A magnitude of zero.

How could you connect an antenna to it?


With a conductive material.


Thanks. I see it's time for me to leave this discussion.

Roy Lewallen, W7EL

Tehrasha Darkon October 27th 07 08:00 AM

Antenna earth stakes - a tricky one!
 
On Sat, 27 Oct 2007 00:10:55 -0400, Stefan Wolfe wrote:

"Roy Lewallen" wrote in message
...


[snippy]

Thanks. I see it's time for me to leave this discussion.


Sorry if the material discussed herein has exceeded the scope of a US
Extra Class license holder's electronics background.


LMAO.

Tom Donaly October 27th 07 11:14 PM

Antenna earth stakes - a tricky one!
 
Stefan Wolfe wrote:
"Roy Lewallen" wrote in message
...
Stefan Wolfe wrote:
Yes, radials simulate a true earth ground by empirical test. They are an
excellent counterpoise...the best. But by definition, they are not earth
ground.

That's interesting. What's a "true earth ground"?


It is the reference point to which all electromagnetic phenomena on Earth is
at zero potential.

What are its properties?


A magnitude of zero.

How could you connect an antenna to it?


With a conductive material.



Just where is this wonderful place? If I were
to guess, I'd say it'd have to be in Texas.
73,
Tom Donaly, KA6RUH


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