[TowerTalk] W7PUA Tiny Ground Probe

[Brian Beezley]

Bob Larkin, W7PUA, has developed a tiny ground probe that offers several 
advantages over larger probes when measuring local ground constants. It 
can provide artifact-free data to 100 MHz, it is easy to insert and 
pull, and it is simple to construct.

https://www.janbob.com/electron/TinyProbe/TinyProbe.html

Wideband results in Oregon soil:

https://iili.io/qftBfsI.png

Program to process probe VNA files:

https://k6sti.neocities.org/gnd

Accuracy limitations of surface probes in stratified ground:

https://k6sti.neocities.org/sg

Generic ground constants for antenna analysis when local ground 
constants are unknown:

https://k6sti.neocities.org/hfgc

Brian