I thought I'd post the results of my recent little project to put up a
Carolina Windom for 80/40/20.

Didn't work very well. :-(

At least, not yet. ;-)

I cut it for 3.6 MHz, and according to everything I read that should give
decent performance on or about 7.2, 14.4, and 28.8 MHz.

Instead, I got 3.6 MHz (as expected), then I got about 6.6 and about 14.9.

I followed the instructions I found in one website article that said to
cut the legs for 37.8 percent and 62.2 percent.

Other articles I've read say to cut for 1/3 and 2/3 of a half wavelength,
i.e. feed the antenna 1/3 of the way from one end.

Since I'm a high precision sort of a dude ;-), I figured 37.8 and 62.2
were more precise than 1/3 and 2/3, so I tried them.

Like I said ... works well on 3.6 (and most of the rest of the 80 meter
band) but not anywhere else.

It is built with a W2AU balun (4:1), 22 feet of RG-8X, an MFJ "line
isolator" (1:1 current-type unun), then about 25 feet of RG-8X to the
shack.

I guess I'll have to go back up there next nice day and try the 1/3 2/3
way.