Jim (et all);
Not to belabor a point, but I thought a quickie expansion of vertical problem
might help: Ground losses are not just 1/4 wavelength from the antenna. Good
radials take care of that. As the signal radiates from the vertical the
electric field, being vertical, induces eddie currents in the earth for many
many wavelengths until the signal becomes a "sky wave". All those eddies sap
signal strength both comming and going. Thats why salt water works so well.
However, it needs several miles of salt water in the desired direction to be
really effective for DX.
73, Al
In a message dated 6/11/2001 16:12:36 Pacific Daylight Time,
jbrannig@optonline.net writes:
> I have been fooling around with ground mounted verticals for years (and
> dipoles and Yagis)
> The view that they "radiate in all directions poorly" is generally true....
> Ground conductivity is crucial. In this area we have hardpan , rocks and
> clay over sand....all manner of radials did not do the job.
> but, with that said, I have had some luck with a 1/4 wavelength on
> 40M....higher freqs. require getting it up in the air, but a dipole will
> work better.
> my 2cents
> Jim
>
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