I would like to hear about experiences and comments on double windom
antennas.

So far there are three designs that I have found reference to:
A Double Windom Antenna for Eight Bands by Hubert Scholle, DJ7SH, and
Rolf Steins, DL1BBC, cq-DL September 1983.
A Double Windom Antenna for Nine Bands by Hubert Scholle DJ7SH, cq-DL
July 1984.
The Off-Centre-Fed Dipole Revisited: A Broadband Multiband Antenna. by
John Belrose, VE2CV, and Peter Bouliane, VE3KLO. QST August 1990.

The Belrose and Bouliane article includes a translation of the two
cq-DL references above and is available to ARRL members at
http://www.arrl.org/members-only/tis...df/9008028.pdf.

Are there any other published designs or articles?

Belrose and Bouliane advocate the use of balanced feed line constructed
from dual parallel RG-62A or RG-63 coaxial cable. What is the advantage
of using the coaxial cable instead of 300 ohm twin lead or 300 ohm
ladder line?

Darrell Bellerive
VA7TO