[TowerTalk] Measuring RF ground characteristics

[Lux, Jim]

On 2/13/21 9:59 AM, Artek Manuals wrote:
> In the process of trying to correlate actual measured R+jX values vs 
> NEC models for an 80M inverted L with elevated radials, I was directed 
> to a paper by Rudy N6LF in QEX from 2009. I have used Rudy's approach 
> and have after many iterations achieved reasonable correlation between 
> actual and modeled numbers. The numbers were not what I expected but 
> are "believable"
>
> It would be intellectually far more satisfying to be able to measure 
> conductivity and dielectric values through direct means.The ARRL 
> Antenna Handbook ( 22nd edition , page 3-21) references some work done 
> by George Hagan back in the 1980's using probes and a VNA. . The ARRL 
> in its infinite wisdom of course does not show the math involved in 
> using this method to directly measure and calculate conductivity and 
> dielectric constant. I have "probes" and a decent VNA ( AIM4300)
>
> I am looking for a copy of:
>
> HF Ground Measurements at the Lawrence Livermore National Laboratory 
> Field Site; /Applied Computational Electromagnetic's Society Journal 
> and News Letter, Vol. 3,Number 2, Fall 1988"
> /
> Any help appreciated with either a copy of the paper or a pointer to 
> where it might be downloaded. So far Google has not been my friend./
>
> Dave
> NR1DX
> manuals at artekmanuals.com
> /

ACES website?
https://aces-society.org/newsletter.php

or maybe here...

https://aces-society.org/search.php?vol=3&no=2&type=2

check about 1/3 way down - a paper by Hagn