Richard Clark writes:

On 23 May 2005 14:27:05 -0500, Allen Windhorn
wrote:
...
Alas, yes, and nothing seems to have improved over the months - same
spelling errors, lax reporting, sloppy presentation, and a smattering
of conflicting claims...

Let's see, we have a 30%, half size, 67% tall radiator with 3 (make
that 2) loads that matches (nearly) the gain performance of a standard
antenna exhibiting somewhere between 3% and 10% bandwidth...

The presentation at the URI website has a lot more details --
apparently a number of antennas have been tested in various
configurations. (It still has spelling errors!)

The helix is the main part of the antenna, with a (maybe optional)
loading coil above that, then an optional straight section or top-hat,
which may or may not be spiral-wound to act as additional loading
coil. Reminds me of the "discpole" antenna in that it tries to get
uniform current in the radiating section.

Maybe I'll to build one to try it out.

73,
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