Excellent skin depth reference here:
www.antennasbyn6lf.com/files/ground_skin_depth_and_wavelength.pdf
Ground characteristics are much more significant for vertical polarization
than for horizontal polarization.
73
Frank
W3LPL
----- Original Message -----
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
To: "Robert L. Chortek" <Robert.Chortek@berliner.com>, "topband"
<topband@contesting.com>
Sent: Tuesday, March 24, 2020 1:23:52 AM
Subject: Re: Topband: Ground Conductivity
On 3/23/2020 3:01 PM, Chortek, Robert L. wrote:
> A quick question for the collective wisdom on this esteemed reflector:
>
> How would one categorize the quality of ground consisting of grass. For
> example, if you live next to a large (many acres) open space made entirely of
> well watered grass, would that qualify as “average ground“, “above average
> ground” or something else?
>
RF conductivity depends on the soil per se, not what is growing on it.
Grass (especially if watered) will grow on any kind of soil, so
it indicates nothing. The lack of grass also doesn't necessarily
indicate anything.
Where I live, the soil is 100% clay and the RF conductivity is
high. Ten miles to the south, the soil is regular dirt.
Vastly better for growing anything, even weeds. But the RF
conductivity is considerable lower.
A casual observer sightseeing would have no idea of this
change in soil.
N6LF has developed techniques for measuring your ground
parameters by characterizing very low dipoles. If you
really want to know about your ground, this is what you
need to do. Way too much work for me or nearly anyone
else.
Rick N6RK
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