wrote:

Cecil Moore wrote:
You could start by explaining the center graphic in the following:
http://www.qsl.net/w5dxp/3freq.gif

I don't understand what it is and how you "constructed" it. Maybe you
can explain.

I simulated a typical vertical base-loaded coil system using the
helical coil feature of EZNEC. I found the resonant frequency and
displayed the results in the left graphic. I then left everything
else alone while I multiplied the resonant frequency by 2 and
displayed the results in the middle graphic. I then multiplied the
resonant frequency 3 and displayed the results in the right graphic.
It's a no-brainer. Have you never done such with EZNEC?

Would someone, somewhere, please explain the ~0.2 amps at the
bottom of the coil in the middle configuration Vs the ~2.0
amps at the top of the coil? Is EZNEC reporting bogus results?
--
73, Cecil http://www.qsl.net/w5dxp