NEC-LIST: Anyone have impedance data on typical loran-c whip?

I have been calling all over the place, and searching all around, and
nobody seems to have any clue as to what the typical impedance is for a
loran-c whip. I know they range from about 18 inches to about 8 feet
(typically an 8 foot whip, at least for marine purposes), but that is all
anyone seems to know. I assume they are spirally wound around a fiberglass
core, of some sort, but I am not sure about that, either. One person
speculated that they look like 20k to 50K ohms resistive in parallel with
about 30 pf, but I have no idea if that is accurate. I know the antennas
are highly capacitive, since they work at 100 kHz, but I would love to find
out more detail about what the actual impedance of a loran-c whip antenna
is. Does anybody on the list have that info?

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