[TowerTalk] W7PUA Tiny Ground Probe

[Jim Brown]

We are blessed on this list by the contributions of and interchange with 
brilliant engineers like Jim Lux and W4EF at NASA, who have us in space 
and with scientific vehicles on the moon, and another who revolutionized 
antenna modeling decades ago.

73, Jim K9YC

On 3/4/2026 1:24 AM, Brian Beezley wrote:
> Jim Lux said:
> 
> "what would be interesting is a probe design that doesn't require 
> penetrating the surface (e.g. I could put it on my concrete driveway)"
> 
> Jim, here is an interesting survey of the many ways to measure ground 
> constants. I wish it had more detail on some of the more obscure 
> methods. But the data section is fascinating. Where else are you going 
> to find the HF dielectric constant of dry peridotite on the Kola Peninsula?
> 
> https://scispace.com/pdf/measurement-of-earth-medium-electrical- 
> characteristics-4x03gkvvc1.pdf
> 
> Brian
> 
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