thats likely the one. i have their book 'optimisation of wire antennas'
that derives a design that sounds like that one.

"Roy Lewallen" wrote in message
...
That name sounds familiar, so it's probably the one. Unfortunately, the
picture boxes at that web page appear blank using either IE6 or Mozilla
1.6, so I can't tell for sure. Must need some kind of plug-in to view
them.

Roy Lewallen, W7EL

Dave Platt wrote:

In article ,
Roy Lewallen wrote:


Quite a few years ago, there were a couple of articles -- in Ham Radio
magazine, I believe --, which addressed that topic. As I recall, the
author used an optimization program that allowed the shape to vary. He
ended up with elements bent kind of like a gull wing, and considerably
longer than a half wavelength -- more like a wavelength if I recall
correctly. The gain was substantially more than for a Yagi, but I don't
remember how good the F/B ratio was. I believe he did construct and
measure some actual antennas.


I think you're referring to the Landstorfer-Sacher Yagi design?

http://www.cebik.com/eb.html has some information on these. It's
something akin to an EDZ (extended double zepp) beam. A 2-meter
3-element L-S Yagi shows gain in the 9.7 dB range, with F/B ratios of
16-23.

Interesting design. Not the easiest thing in the world to construct,
I suspect.

http://www.cebik.com/eb.html has some information on these. It's
something akin to an EDZ (extended double zepp) beam. A 2-meter
3-element L-S Yagi shows gain in the 9.7 dB range, with F/B ratios of
16-23.

That name sounds familiar, so it's probably the one. Unfortunately, the
picture boxes at that web page appear blank using either IE6 or Mozilla
1.6, so I can't tell for sure. Must need some kind of plug-in to view them.

Weird! They show up fine on my Linux workstation using Mozilla 1.5
and on my laptop using Mozilla Firefox 0.8. I saved on of the images
to disk, and it proved to be a very ordinary GIF file, with only two
colors. They ought to be visible in any standard browser.



--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

I contacted LB about the problem, and he said he'd received reports
similar to mine. He's contacted the web host but hasn't heard back yet.
So it's being addressed.

My browsers are both standard as far as I can determine. My firewall is
set to a pretty touchy level, though, so that might be the cause. But I
haven't had trouble with pictures at other sites.

Roy Lewallen, W7EL

Dave Platt wrote:

http://www.cebik.com/eb.html has some information on these. It's
something akin to an EDZ (extended double zepp) beam. A 2-meter
3-element L-S Yagi shows gain in the 9.7 dB range, with F/B ratios of
16-23.


That name sounds familiar, so it's probably the one. Unfortunately, the
picture boxes at that web page appear blank using either IE6 or Mozilla
1.6, so I can't tell for sure. Must need some kind of plug-in to view them.


Weird! They show up fine on my Linux workstation using Mozilla 1.5
and on my laptop using Mozilla Firefox 0.8. I saved on of the images
to disk, and it proved to be a very ordinary GIF file, with only two
colors. They ought to be visible in any standard browser.

I contacted LB about the problem

This page details the information that is available about the URL
http://www.cebik.com/gup/gup21-5.gif that is available in the WWWOFFLE cache.

Header
The cached header contained the following items (this is before
WWWOFFLE has modified it and possibly censored some items).

HTTP/1.0 403 Forbidden
Connection: close
Date: Thu, 01 Apr 2004 23:01:29 GMT
Server: Apache/1.3.26 (Unix) FrontPage/5.0.2.2510 PHP/4.3.4
Content-Type: text/html; charset=iso-8859-1

Sure hope there are no assumptions made about how we are fetching his pages.