On Tue, 11 May 2004 11:59:10 +0200, Jan Van Belle
wrote:

Hello all,

The last days I was searching for more info o how to build fratal
antennas on the web. But besides lots of links to fractenna.com and a few
powerpoint slides I found nothing.

Has anyone sucessfully build such an antenna for HF? Is anyone using it?

Kind regards,

Jan, ON5DOA

Hi Jan,

The reason you see such a void of examples is because of your very
question:
who has built one?

This question above is the one that follows:
which one to build?

And this question above is the one that follows:
what limitations do I have?
or:
what qualities do I want?

Your question is raised here on sporadic occasions, and the poster
NEVER returns to report a successful outcome. This is not due to lack
of information. For such (the largest compilation in the world)
visit:
http://www.qsl.net/kb7qhc/antenna/fractal/index.htm

You should immediately notice that the first impediment is found in
the very nature of fractal shapes.

Do you want gain? Seems not, you do not describe having a large
enough space to do that.

Do you want multi banded resonances in a small space? Probably, but
you will find very, very few examples worth the effort (frankly none).
In all likelihood you would need a tuner, and if you had a tuner, you
should skip the complication of this academic trash.

In open competition between an Amateur and the professional fractal
builder, the professional lost against 6 designs that trounced the
best professional fractal on the basis of gain for the smallest
footprint. That is to say, all seven antennas were bound within a
prescribed "small" area (such as you describe), and the fractal came
in dead last.

73's
Richard Clark, KB7QHC