On 27 Sep 2006 02:49:55 GMT, I wrote wrote:
What sort of gain is expected from an EDZ? I tweaked the topology
of my design a bit in the hope of getting a broader bandwidth, but
instead got even more gain. For example, the version represented
below has a minimum gain of more than 4.7 dBi (at the side) and more
than 5.25 dBi in the forward direction. Previously I reported gain
values that ran from 4.2-4.7 dBi. So this one represents a bit of an
improvement. I may try building it this weekend. Thanks, --John

I found time this weekend to construct this antenna and it seems to
work quite well. See http://www.jedsoft.org/fun/antennas/omni.html
for the details including a picture of the antenna.

While testing it, I made a contact through a distant repeater (40
miles away) and was told that the signal was solid. This was with the
antenna in its test position with the center about 10 feet off the
ground and the transmitter power at 5 watts. Unfortunately I cannot
be more quantitation than that.

Unless I have overlooked some other design, this seems to be an
extremely simple and effective home-brew antenna.

Comments welcome.
Thanks,
--John