On 9 Apr, 15:07, "JIMMIE" wrote:
On Apr 9, 3:23 pm, "art" wrote:





On 9 Apr, 12:15, "Jimmie D" wrote:

"art" wrote in message

roups.com...

On 9 Apr, 11:03, "JIMMIE" wrote:
On Apr 9, 12:19 pm, "art" wrote:

On 9 Apr, 08:12, (Richard Harrison) wrote:

Art wrote:

"The Gauss system, which does not use parasitics and therefore
pursues
the independent control AND PHASE AND AMPLITUDE."

Parasitic arrays can also use independent control of phase and
amplitude, I worked with curtain antenna arrays in the 1950`s used
for
shortwave broadcasting.

The array consisted of (4) 1/2-wave dipoles, 2 over 2 all in the same
plane, separated vertically by a 1/2 wavelength and suspended over
the
earth by a gap of 1/2-wavelength. An identical dipole array was
suspended immediately behind the driven dipoles. It served as a
parasitic reflector.

The harness connected to the parasitic array was identical to that
connected to the driven elements except that instead of being
connected
to the transmitter, it was connected to tuning stubs. We used an RCA
WM
30A broadcast phase monitor with sampling loops suspended on driven
and
parasitic elements to adjust phasing of the reflector.

Best regards, Richard Harrison, KB5WZI

There is no problem with that for shortwave broadcasts since not only
are you looking for a broard arrival area you are also looking at a
skip distance wheret different polarization arrives at the same
polarity.
If it were a Gauss form it would be of a higher
power but a much smaller arrival area which means a smaller audience.
Though I must add that a Gaussian arrival area can be tailor made
rather than the narrow lobe associated with other radiators.
It is when " boresight" is of a concern that such arrays fall in
disfavor,
as in cell phone work and satellite work where one should take note
of maximum polarization purity. Tho'whysatelites still use
turnstiles
is beyond me since only one polarization is required but I am sure
there must be a reason, possibly because there is not an overpowering
need of multi monitoring communication channels.
Regards
Art

If this fact is beyound you as you say then you have no business
lecturing other people on antenna theory and that you are as brainless
as you claim others to be. They are circularly polarized because
satellites tumble in space resulting in there polarity constantly
changing, also other reasonwhythe polarity of an earth station would
not match that of a satellite, look them up. This can be a real
problem with a linear polarity antenna but no problem at all for a
circular polarity antenna such as the turnstile.

Jimmie- Hide quoted text -

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Jimmie, think before you post. A turnstile is not perfectly CP. For
perfection changes are needed but as I said earlier perfection may not
be necessarily desired. If you are going to disagree with everything
you may want to be more choosey in your selection of posts plus
reading the content more than twice before you decide to expose your
lack of knoweledge.
Art

The imperfection is only slight and works quite well for all pratical
purposes. You should be sure of your own knowledge. I f perfection was
required I doubt if anything would ever perform satisfactorly.

Jimmie- Hide quoted text -

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I "know" it can be perfected, you however have "doubts" As I said
earlier read twice before you choose to disagree. You are
overestimating your antenna abilities and really should revert to a
learning mode. If it was baseball you would be long gone.
Art- Hide quoted text -

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Huh, Can someone translate this into english.
WHAT A WASTE OF TIME, PLOINK!!!!!!- Hide quoted text -

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You have asked for proof with respect to tipping and you now have
it.So look at the NEC group and you can now argue with them. Oh, and
mention what you did after high school, you may impress them so much
that they will all back down in awe of your antenna knoweledge and the
laws of the masters.
The rest of the group who have argued with you are banking on you to
get the job done with those experts on the NEC group. It's downright
embarrasing
for our group to be on the wrong end of the stick once again. If you
can't
then we can always fall back on "we knew it all the time" so it is not
really the end of the road with respect to tipping of antennas.
If you move to that group you will be among your peers so tell them
what antennas are all about.
Art