jawod wrote:
Three versions of the Carolina Windom are presented:
Original single wire feed,

Actually, not a Carolina Windom - simply a traditional
Windom, the grandfather of all Windoms - named after
Major General Loren G. Windom, W8GZ, (Windy) (QST,
Sep 1929, pp 19-22, 84).

www.geocities.com/w8jyz/8GZ.pdf

OCF with twinlead and balun,

Don't know if it was ever a commercially available
antenna called a "Carolina Windom" but this is just a
traditional "Off-Center-Fed Dipole" labeled as such in
my 1957 ARRL Handbook.

http://www.w8ji.com/windom_off_center_fed.htm

and OCF with 10' length of coax

This is what most people think about when someone says
"Carolina Windom" and the reason that some people were
confused.

http://www.hamuniverse.com/k4iwlnewwindom.html

I guess I'll conclude that the balun has failed.

At least hang a 200 ohm non-inductive resistor on the
output and measure the input impedance. I don't know
how you can assume the balun has failed if you don't
know what impedances the balun was having to deal with.
--
73, Cecil http://www.w5dxp.com