[TowerTalk] Measuring RF ground characteristics

[Artek Manuals]

Jim

Thanks , I wonder why google wouldn't return that. It looks like it 
might be there.

Unfortunately you have to"apply" for an account, And it asks ( 
unnecessarily IMO ) for a lot of personal info. I choked that down and 
applied we will see if they let me in ...so far no reply

Dave
NR1DX

On 2/13/2021 1:03 PM, Lux, Jim wrote:
> 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
>
>
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-- 
Dave Manuals at ArtekManuals.com www.ArtekManuals.com


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