On Sat, 05 Mar 2005 14:34:11 GMT, "
wrote:

Thus TOA becomes
the most important thing for me as well as the "thickness" of the lobe.
That is the sense that your response questioned regarding my maximisation
of
antenna
performance for which I use TOA.

Hi Art,

Back when fractal antennas ruled the sky - at least on paper - the
bragging rights were carefully tailored to fit the design.

Some of this was arguably targeted to a user population that would
have enjoyed the advantage. Anyway, such an example is shown at:
http://www.qsl.net/kb7qhc/antenna/fr...r/k2/index.htm

The fractal flyer, and its superior, simpler cousin the H Flyer showed
a real, improved, DX response at 10 degrees. This was not their best
response angle which you call TOA. In fact, both designers studiously
ignored what you call TOA because it was not particularly notable.

So, as a bald statement, both designs constitute very small antennas
that exhibit BETTER gain figures at a TOA of 10 degrees than a full
sized dipole held at a comparable height. Also, these antennas show a
F/B that is very much better than a full sized antenna. Further, both
designs, but notably the H Flyer, show full band matching. However,
having said that, sans actual response levels or context, is having
said nothing.

However, let's look at the full characteristics, not simply the
claims:

Best Response:
Std Dipole 0 dBi @ 90°
fractal flyer -0.81 dBi @ 39°
H Flyer -0.6 dBi @ 45°

10 Deg. Response:
Std Dipole -7.51 dBi
fractal flyer -4.85 dBi
H Flyer -4.75 dBi

2:1 Match Range:
Std Dipole 0.85 MHz
fractal flyer 0.5 MHz
H Flyer 1.0 MHz

As can be seen, the H Flyer was the best design across the board, IF
you accepted the limitations originally imposed (very low, very small,
and scrutinized at 10 degree take off). Does this qualify it as a
good antenna? Depends on if you are space and height limited.

One last point, as poor as a valuation of -5dBi is, there are very few
designs (barring the two shown here) that can perform better and still
fit in the box.

So, let's return to claims, especially for the H Flyer:
Smallest resonant antenna;
Highest DX Gain;
Widest Bandwidth:
Best F/B;
Not a Fractal.

73's
Richard Clark, KB7QHC