On 2/29/16 10:58 AM, Doug Turnbull wrote:
Dear OMs and YLs,
Yes all this is true but do not forget the actual radial length will be
shorter than 0.4 Wavelength when on the ground. It may be electrically 0.4
wavelength but physically it is considerable shorter as the ground changes
the velocity factor.
I think the issue with radials on or in the ground is more a matter of
"improving the conductivity" in the near field and it's more related to
the physical height of the vertical radiator, than any sort of fraction
of a wavelength effect.
So, if you had a 5-10 meter tall radiator, being used on 80m or 160m,
there's not a lot to be gained by going longer than 15-20 meters for the
radials.
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