There was a report in the Electronic Engineering Times (16 May 05)
about this antenna, which is a helical with extra top-loading and an
optional capacitive hat. Designer was Rob Vincent (call?) at the
University of Rhode Island. More info at:
http://www.uri.edu/news/releases/index.php?id=3126
and a presentation at:
http://www.uri.edu/news/vincent/boxboro_files/frame.htm

Anyone seen this particular combination? Appears to have very good
performance.

Regards,
Allen WA0OHE
--
Allen Windhorn (507) 345-2782 FAX (507) 345-2805
Kato Engineering (Though I do not speak for Kato)
P.O. Box 8447, N. Mankato, MN 56002