[Lf] well not a good ground ?
Andre' Kesteloot
akestelo at bellatlantic.net
Sat Jan 29 23:41:11 CST 2000
Dick Carroll wrote:
> Dave Riley wrote:
> >
> > Hi Troops,
> >
> > Tried friends well pipe for ground many years ago when we worked CW
> > on 180khz from Plymouth to here daily.
> >
> > His metalic well pipe made barely any difference in sigs compared
> > to the wires on the ground. I bet if it was tuned seperately
> > then you may have a good 'image' plane.
> >
>
> Guys, ther are lots of references in the literature that
> say a wllpipe is not a good RF ground, or antenna
> counterpoise, which needs to be at or near the surface to
> return antenna currents to the antenna. A wellpipe instead
> helps dissipate them into the earth, as a poor RF
> counterpoise would do. Use radials on or near the surface
> for best performance.
> Use the wellpipe for your lightning ground, if you dare to
> risk the deepwell pump to the lightning...but it might be an
> expensive move. Deepwell electric pumps are often damaged by
> ligtning strikes that follow the service wiring down the
> well to the pump motor. I'd be trying
> to shunt the lightning to ground somewhere far from the
> house OR the well.
>
> 73, Dick W0EX
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