I've written a Windows program that calculates ground permittivity,
conductivity, and skin depth using impedance data from a soil probe and
vector network analyzer, such as a NanoVNA. Realistic ground parameters
are important when comparing horizontal and vertical antenna models.
General terrain descriptions and ground conductivity maps are much too
coarse. Ground parameters also vary with frequency. With a soil probe
you can determine the parameters of your local ground at the frequency
of interest. Skin depth can help you assess the limitation of a surface
probe when the ground is inhomogeneous.
See README.TXT for instructions. It includes references on making and
using a soil probe.
Screenshots:
http://ham-radio.com/k6sti/gnd.htm
Download:
http://ham-radio.com/k6sti/gnd.zip
Brian
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