wrote:
I wonder who was the first to assign these terms
Or was it a poor translation from Japanese ( Uda and Yagi) ?

Please note that John didn't mention Yagi's. He only
mentioned "beams". :-)
--
73, Cecil http://www.qsl.net/w5dxp

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Yes, I see that Cecil, but I suspect he is not a ham
and thus would not know the difference between
different arrays. But if he is really looking for "Aliens"
he may well be looking in the right direction but his LED's
have a skewed correct "reflector".
With respect to your two element example you stated that
they were both driven. When coupled correctly it is only
necessary to feed one element in an array and allow the
coupled element to be of similar phase and if possible
of a higher current flow to give you that 3 db additive
advantage . Plus single digit elevation angle for max gain
even tho the array is fed at 1 WL height.( 20 metres)
I could send you actual model details if it is of interest.
Or a photo if that interests you more.
Regards

Art




"Cecil Moore" wrote in message
...
wrote:
I wonder who was the first to assign these terms
Or was it a poor translation from Japanese ( Uda and Yagi) ?

Please note that John didn't mention Yagi's. He only
mentioned "beams". :-)
--
73, Cecil http://www.qsl.net/w5dxp

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Well, I am not as bad as those guy with their "photon projecting
antennas"--my antennas propagate a wave though a medium--for want of a
better word--I use ether to describe that medium... but, if anyone knows a
better name--I am open... grin

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

" wrote in message
news:KSwge.72444$NU4.47928@attbi_s22...
| Yes, I see that Cecil, but I suspect he is not a ham
| and thus would not know the difference between
| different arrays. But if he is really looking for "Aliens"
| he may well be looking in the right direction but his LED's
| have a skewed correct "reflector".
| With respect to your two element example you stated that
| they were both driven. When coupled correctly it is only
| necessary to feed one element in an array and allow the
| coupled element to be of similar phase and if possible
| of a higher current flow to give you that 3 db additive
| advantage . Plus single digit elevation angle for max gain
| even tho the array is fed at 1 WL height.( 20 metres)
| I could send you actual model details if it is of interest.
| Or a photo if that interests you more.
| Regards
|
| Art
|
|
|
|
| "Cecil Moore" wrote in message
| ...
| wrote:
| I wonder who was the first to assign these terms
| Or was it a poor translation from Japanese ( Uda and Yagi) ?
|
| Please note that John didn't mention Yagi's. He only
| mentioned "beams". :-)
| --
| 73, Cecil http://www.qsl.net/w5dxp
|
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|

"John Smith" wrote in message
...
Well, I am not as bad as those guy with their "photon projecting
antennas"--my antennas propagate a wave though a medium-
Very good, An antena array is a collection of antennas all of which
transmit interferring waves that are both additive and interfering negatives
in the far field In other words just a collection of dipole radiators. which
is then
termed as an "array" which may or may not qualify as a "beam".
For a Yagi style antenna position is all important which is not necessarily
true
for all antenna arrays, especially those of non liear form.
.. In fact Uda and another guy wrote up the original design and
Yagi stepped in later to provide a translation into English .
For me I cannot see a relationship between positions of radiators other
than
with the Yagi and where the terms used suffered in the translation yet still
gave a
a mental picture that loosely matched a mirror or a reflector as an
explanation.
of how gain can occur. It would appear from the answers received
that a true definition has not yet been agreed upon that is all encompassing
in true electrical terms.
Cheers and beers
Art



better word--I use ether to describe that medium... but, if anyone knows
a
better name--I am open... grin

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

" wrote in
message
news:KSwge.72444$NU4.47928@attbi_s22...
| Yes, I see that Cecil, but I suspect he is not a ham
| and thus would not know the difference between
| different arrays. But if he is really looking for "Aliens"
| he may well be looking in the right direction but his LED's
| have a skewed correct "reflector".
| With respect to your two element example you stated that
| they were both driven. When coupled correctly it is only
| necessary to feed one element in an array and allow the
| coupled element to be of similar phase and if possible
| of a higher current flow to give you that 3 db additive
| advantage . Plus single digit elevation angle for max gain
| even tho the array is fed at 1 WL height.( 20 metres)
| I could send you actual model details if it is of interest.
| Or a photo if that interests you more.
| Regards
|
| Art
|
|
|
|
| "Cecil Moore" wrote in message
| ...
| wrote:
| I wonder who was the first to assign these terms
| Or was it a poor translation from Japanese ( Uda and Yagi) ?
|
| Please note that John didn't mention Yagi's. He only
| mentioned "beams". :-)
| --
| 73, Cecil http://www.qsl.net/w5dxp
|
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120,000+
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On Wed, 11 May 2005 19:09:12 -0700, "John Smith"
wrote:

Well, I am not as bad as those guy with their "photon projecting
antennas"

Makes it infinitely easier to reckon which is the director or the
reflector - just look. If you see yourself holding the flashlight,
you are the director looking at the reflector.

Now for the real challenge:
What would you see if you looked into a conjugate mirror?

Hint(s): it won't matter much if you are holding a flashlight OR a
searchlight. No matter of semantics will change the perception
either. Nothing to close couple (you are close enough already). No
issue of size (as long as you can see the mirror frame - but having
said that, this will then turn the answer on the shape of the frame I
suppose). No impact will be discovered if there's another mirror
behind it. No one needs to worry about translation problems from
japanese. You won't find the answer in Kraus (or the IEEE dictionary
I suspect). Computation of gain comes with the answer (and in all
likelihood so will considerable error).

73's
Richard Clark, KB7QHC

Richard Clark wrote:
What would you see if you looked into a conjugate mirror?

You need to define the particular aspect being conjugated. For example,
the person I see in the mirror appears to be right handed. In another
sense the object in the mirror moves synchronously with me as if it were
coupled to me. Any mirror exhibits conjugate behavior in some sense.
Perhaps you're alluding to phase conjugation - an interesting effect.

Hint(s): it won't matter much if you are holding a flashlight OR a
searchlight. No matter of semantics will change the perception
either. Nothing to close couple (you are close enough already). No
issue of size (as long as you can see the mirror frame - but having
said that, this will then turn the answer on the shape of the frame I
suppose). No impact will be discovered if there's another mirror
behind it. No one needs to worry about translation problems from
japanese. You won't find the answer in Kraus (or the IEEE dictionary
I suspect). Computation of gain comes with the answer (and in all
likelihood so will considerable error).

Effluvium for the sake of effluence, and vice versa.

ac6xg

Jim Kelley wrote:
the person I see in the mirror appears to be right handed.

Hey Jim, if a mirror reverses left and right,
why doesn't it also reverse up and down? :-)
--
73, Cecil, http://www.qsl.net/w5dxp


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Cecil Moore wrote:
Jim Kelley wrote:

the person I see in the mirror appears to be right handed.


Hey Jim, if a mirror reverses left and right,
why doesn't it also reverse up and down? :-)

:-) Excellent.

ac6xg

Cecil:

That is easy, our eyes actually see an image which IS upside down... the
brain reverses this for us... when we look in the mirror--it stops the
reversal!!! Tricky dern thing!!! grin

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

"Cecil Moore" wrote in message
...
| Jim Kelley wrote:
| the person I see in the mirror appears to be right handed.
|
| Hey Jim, if a mirror reverses left and right,
| why doesn't it also reverse up and down? :-)
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
|
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Cecil:

It that mirror or yours working correctly? Did you try hanging it upside
down? You don't live below the equator do you? Cause, yanno, water spins
one way going down a drain in the northern, opposite in the
southern--somethin' 'bout gravity--or the warping of the ether... grin

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

"Cecil Moore" wrote in message
...
| Jim Kelley wrote:
| the person I see in the mirror appears to be right handed.
|
| Hey Jim, if a mirror reverses left and right,
| why doesn't it also reverse up and down? :-)
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
|
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