Hi Reg,

Notice that the purpose of the formula is to get the maximum performance
from a finite length of available wire. So it doesn't make much difference
what the ground characteristics are..the goal is to put down enough and the
right length so that the ground characteristics don't matter any more.

For more detail, go the the url I listed, as it shows the effects of various
ground characteristics:

http://www.ncjweb.com/k3lcmaxgainradials.pdf

With this data, the generic formula and your own work, something synthetic
could result that is even better than your most recent efforts. It is a VERY
interesting subject to those of us using ground mounted verticals.

73,

....hasan, N0AN

"Reg Edwards" wrote in message
...

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Hasan,

Thanks very much for the formula of which I was entirely unaware. I
will study it.

I notice that it disregards resistivity and permittivity of the ground
under under the antenna which, obviously, ought be taken into account
even when only crudely known.

There's a great difference between a soil resistivity of 25 and 5000
ohm-metres.

This is similar to BL&E who simply state that if the length and number
of radials are greater than certain amounts then soil characteristics
don't matter.
----
Reg.