Art,

Think again about what you wrote.

"I have oft times changed a single element into two closely coupled
elements and where one is short and one is long relative to a driven
element."

Why would you mis-attribute your application of standard terminology to
a new experimental situation as a "poor translation"?

The appropriate terminology for the various elements is generally pretty
clear from the physical design and performance of a Yagi antenna. When
your experiments go beyond the original design you are on your own.

73,
Gene
W4SZ


wrote:
Seems to me Cecil that the terms "Reflector" and
"Director" are very poor words to describe antenna
elements for an HF array .
I have oft times changed a single element into two
closely coupled elements and where one is short
and one is long relative to a driven element
I wonder who was the first to assign these terms
Or was it a poor translation from Japanese ( Uda and Yagi) ?
Regards
Art

Exactly Gene.
This is why the thread asked for a "definition" first for director and
reflector.
As you are probably aware a yagi reflector does not reflect anything.
Some would say that a dish "reflects but not a element.
I am still a bit gun shy after the last episode where TOA was not
defined in the IEEE dictionary thus many feined knowledge on the subject.
I suspect tho that the nomenclature started with the Yagi and then
spread to other array design descriptions.
If however a Yagi reflector does actually "reflect" then your scolding
is correctly directed at me.Perhaps we should first look in a dictionary
for the word "reflector"
Regards
Art

"Gene Fuller" wrote in message
...
Art,

Think again about what you wrote.

"I have oft times changed a single element into two closely coupled
elements and where one is short and one is long relative to a driven
element."

Why would you mis-attribute your application of standard terminology to a
new experimental situation as a "poor translation"?

The appropriate terminology for the various elements is generally pretty
clear from the physical design and performance of a Yagi antenna. When
your experiments go beyond the original design you are on your own.

73,
Gene
W4SZ


wrote:
Seems to me Cecil that the terms "Reflector" and
"Director" are very poor words to describe antenna
elements for an HF array .
I have oft times changed a single element into two
closely coupled elements and where one is short
and one is long relative to a driven element
I wonder who was the first to assign these terms
Or was it a poor translation from Japanese ( Uda and Yagi) ?
Regards
Art

If a yagi reflector, reflects nothing, what would account for the forward
gain of only a driven element and a "non-reflector?"

I am not asking to be a smartass, but looking for some evidence of the
ethers properties... (some might say I am looking for aliens? grin)

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

" wrote in message
news:tEvge.74692$c24.13529@attbi_s72...
| Exactly Gene.
| This is why the thread asked for a "definition" first for director and
| reflector.
| As you are probably aware a yagi reflector does not reflect anything.
| Some would say that a dish "reflects but not a element.
| I am still a bit gun shy after the last episode where TOA was not
| defined in the IEEE dictionary thus many feined knowledge on the subject.
| I suspect tho that the nomenclature started with the Yagi and then
| spread to other array design descriptions.
| If however a Yagi reflector does actually "reflect" then your scolding
| is correctly directed at me.Perhaps we should first look in a dictionary
| for the word "reflector"
| Regards
| Art
|
| "Gene Fuller" wrote in message
| ...
| Art,
|
| Think again about what you wrote.
|
| "I have oft times changed a single element into two closely coupled
| elements and where one is short and one is long relative to a driven
| element."
|
| Why would you mis-attribute your application of standard terminology to
a
| new experimental situation as a "poor translation"?
|
| The appropriate terminology for the various elements is generally pretty
| clear from the physical design and performance of a Yagi antenna. When
| your experiments go beyond the original design you are on your own.
|
| 73,
| Gene
| W4SZ
|
|
| wrote:
| Seems to me Cecil that the terms "Reflector" and
| "Director" are very poor words to describe antenna
| elements for an HF array .
| I have oft times changed a single element into two
| closely coupled elements and where one is short
| and one is long relative to a driven element
| I wonder who was the first to assign these terms
| Or was it a poor translation from Japanese ( Uda and Yagi) ?
| Regards
| Art
|
|

wrote:
If however a Yagi reflector does actually "reflect" then your scolding
is correctly directed at me.Perhaps we should first look in a dictionary
for the word "reflector"

From the IEEE Dictionary: "reflector element - A parasitic element
located in a direction other than forward of the driven element
of an antenna intended to increase the directivity of the antenna
in the forward direction."

"director element - A parasitic element located forward of the
driven element of an antenna, intended to increase the directivity
of the antenna in the forward direction."

By this definition, a log-periodic has no reflectors and no
directors.
--
73, Cecil http://www.qsl.net/w5dxp

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Interesting Cecil. Not only does it rely only on position versus
the driven element but they use the term reflector
in the same breath as a parasitic device!
Presumably length is not a factor.
Mirror, Mirror on the wall now we will call you a parasite
depending who is looking at you
Just don't paint your antenna and use plenty of LED's so that
the shiny surfaces will reflect. I give up, there are to many
conflicting definitions.
In my case it would appear that I have one driver, six reflectors and one
parasitic driver, that should be explicit enough.
Thanks everybody for your help
Art


"Cecil Moore" wrote in message
...
wrote:
If however a Yagi reflector does actually "reflect" then your scolding
is correctly directed at me.Perhaps we should first look in a dictionary
for the word "reflector"

From the IEEE Dictionary: "reflector element - A parasitic element
located in a direction other than forward of the driven element
of an antenna intended to increase the directivity of the antenna
in the forward direction."

"director element - A parasitic element located forward of the
driven element of an antenna, intended to increase the directivity
of the antenna in the forward direction."

By this definition, a log-periodic has no reflectors and no
directors.
--
73, Cecil http://www.qsl.net/w5dxp

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News==----
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Newsgroups
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=----

Gene Fuller wrote:
Art,

Think again about what you wrote.

"I have oft times changed a single element into two closely coupled
elements and where one is short and one is long relative to a driven
element."

Why would you mis-attribute your application of standard terminology
to
a new experimental situation as a "poor translation"?

The appropriate terminology for the various elements is generally
pretty
clear from the physical design and performance of a Yagi antenna.
When
your experiments go beyond the original design you are on your own.

73,
Gene
W4SZ


wrote:
Seems to me Cecil that the terms "Reflector" and
"Director" are very poor words to describe antenna
elements for an HF array .
I have oft times changed a single element into two
closely coupled elements and where one is short
and one is long relative to a driven element
I wonder who was the first to assign these terms
Or was it a poor translation from Japanese ( Uda and Yagi) ?
Regards
Art