On Sun, 07 Nov 2004 00:56:00 -0800, Roy Lewallen
wrote:

The difference between gain relative to isotropic (which you're
unnecessarily calling "true gain") and directivity is only the
efficiency.

Hi Roy,

Let's call it relative gain then. The point of the matter is not in
terminology but in magnitude and correlation.

The Thread, throughout, is constituted of four principles:
Rr;
Current;
Radiator size;
Loading;

To reveal their inter-relatedness required an impartial witness of an
external load (the remote antenna which is the raison d'etre of
communication).

The gain evidenced in this remote antenna is not some arbitrary change
of terms that is alien to the craft of communication (nor even the
majority of engineering). It encompasses differences that exceed 1dB,
eclipsing that even to the point of being 7dB in the first iteration.
When in the second iteration the shortened antenna is brought to
resonance, the change still exceeds 1dB (2.9dB by my reckoning). ALL
such changes, when viewed through the veil of dBi simply reveal
miniscule changes of what you call ground reflection. As such, dBi is
a poor mechanism to reveal Rr's characteristic through structural
variations.

I won't go on with the remainder of iterations because no new
observations would be drawn. Indeed, the data supports the generality
that suits the purpose of achieving the expected results. As I
offered:

This comes as no surprise to many.

Now, the issue of Isotropism is one that is power centric, and this is
certainly the common experience of any Ham trying to load an antenna
from a real transmitter. They have a finite amount of power they wish
to maximize, and this then becomes an issue of efficiency. However,
there is NOTHING in my work that states this is a goal - or I would
have expressed that in no uncertain terms. If any seek that
divergence of issue, then my data supports it without further
qualification.

So, gain is entirely consistent within the context of the simple
agenda that was explicitly described. Gain was shown to follow
structural changes with positive correlation. Gain was shown to
follow those changes in direct proportion. Gain was shown to be
consistent with expectation. If such Gain is shown to be a wash in
efficiency at best, worst for wear, or a boon to mankind, that is
simply an issue of implementation and outside of my discussion of
examining:
Rr;
Current;
Radiator size;
Loading.

73's
Richard Clark, KB7QHC