Yes, I have been using the 150mm (6") pipe in our well with quite good
results. The pipe is 12m long and goes about 11 m (36ft) through soil
and about 1m into the granite rock below (total hole depth is 111m).
At resonance, my antenna had a feedpoint resistance of 35 ohms.
The loading coil loss was around 8 ohms, including the variometer,
leaving a loss resistance of about 27 ohms for ground connection +
"environmental loss". The TX was connected to the pipe ground via
25m 2.5mm^2 wire laying on the ground. I made an interesting observation
when connecting the mains protective ground in parallel with the
"pipe ground" - the feedpoint resistance increased to 50-60 ohms!...
The antenna was an 85 meter long inverted L at an average height of 14m.
73
Johan SM6LKM
J. B. Weazle McCreath wrote:
[...] However, about 150 feet from my house is a water well in the
> form of an 8 inch diameter steel pipe that goes down 275 feet!
> Has anyone on the list had any experience using such as a ground
> for a Marconi antenna? [...]
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