At 12:06 PM 8/11/2004, Russell McMahon wrote:

>> I'm looking at the series combination of four large inductors, and a
>relatively small rod.  I know from direct observation that the system is
>series resonant near 250kHz, with a low impedance notch.
>
>
>The mini-NEC antenna modelling program may help.
>I've never used it ...
>
>Available many places including here
>
>        http://www.geocities.com/gregsdownloadpage/em.html

The "antenna" isn't intended to behave as an antenna, in the classical sense.
It's a capacitor, starting with it's own value in the space, and then increasing to some higher value as the hand is brought near.

It's radiation efficiency is abysmally low.

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