Tom Bruhns wrote:
Why go looking for a
point that's a rough approximation to what we want when we already
have just what we want?

The point is that we *DON'T* already have what we want. EZNEC is
only an approximation. Most people cannot measure the feedpoint
impedances of their antennas when it is over a few hundred ohms,
so a rule-of-thumb is helpful. The impedance graph in the ARRL
Antenna Book is helpful.

For any SWR above 5:1, A+jA will be relatively close to the maximum
reactance point. Setting A = Rmax/2 will be relatively close to the
behavior of a thin-wire HF dipole at the maximum reactance point
between 1/2WL and one-wavelength. Exactly what is it that you think
"we" already have?

Tom, exactly what are you trying to prove by picking all those nits?
If I say I weigh about 200 pounds, are you going to argue that I
don't weigh 200 pounds - that I acutally weigh 204.3785 pounds?

And you didn't say where you got the 1000+j800 ohm value for the
maximum reactance point. That looks like an unreasonable value
for a thin-wire HF dipole.
--
73, Cecil http://www.qsl.net/w5dxp



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