Some time ago I mentioned how inefficient Yagi design
antennas were thinking more in the way of how little of
the radiation used got to its required direction.
At that time people said the antenna was efficient though
they wanted to talk about
actual radiation efficiency and the sniping began
..Nobody but nobody came back with the radiation
efficiency of a Yagi as they saw the question, they
just wanted to throw stones.Imagine that antennas
was not what the experts wanted to talk about and
the newsgroup took a turn for the worst
So I join in with the thoughts of radiation efficiency
of a yagi unless you prefere to give up this antenna
newsgroup. But before you scream out and throw
stones again I will referr to efficiency as most of the
members of this group what's left of them think of the term.
So let's look at that if that is what you preferr..

The basic small yagi has three elements one driven,
one a reflector and one a director yet only one
element has a truly resistive impedance whereas
the other two do not. Since two elements out of the
three are producing reactive impedances and wherein
the reactive portions of impedance is pure waste
pray tell me how one can consider a yagi as efficient?
And please, please don't waste time on "I don't understand"
otherwise everything drops down to the subject of spark noise
which was really decided by hams a long while ago.
On the other side of the coin, if the reactive portion of an
impedance is not waste then why is LCR
type mesh circuitry only revolve around lumped circuitry?
HINT add up the power emminating from each element
P =I sq times real resistance for those who are just followers.

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

Tom Ring wrote:
art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR
See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.

art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


Actually Art, you never listen to reasonable arguments, so I didn't
offer one.

tom
K0TAR

art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


And to continue the theme -

Actually Art, yagis are usually better than 95% efficient.

tom
K0TAR

Could be, seems reasonable but some want to view the yagi as the cats
wiskers
and totally efficient which it cannot be despite all the trash talk
from so called experts

Tom Ring wrote:
art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


And to continue the theme -

Actually Art, yagis are usually better than 95% efficient.

tom
K0TAR

Could be, seems reasonable but some want to view the yagi as the cats
wiskers
and totally efficient which it cannot be despite all the trash talk
from so called experts

Tom Ring wrote:
art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


And to continue the theme -

Actually Art, yagis are usually better than 95% efficient.

tom
K0TAR

Not a reasonable answer, could be speculation like some of the comments
I get from experts. The yagi is not totally efficient in changing the
time changing field to a radiative field
because it has detuned elements contrary to what Roy states that a
reflector aids the forward lobe.......that is trash talk but many of
the so called experts are following like lemmons


Tom Ring wrote:
art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


And to continue the theme -

Actually Art, yagis are usually better than 95% efficient.

tom
K0TAR

art wrote:

Not a reasonable answer, could be speculation like some of the comments
I get from experts. The yagi is not totally efficient in changing the
time changing field to a radiative field
because it has detuned elements contrary to what Roy states that a
reflector aids the forward lobe.......that is trash talk but many of
the so called experts are following like lemmons


So why is it then, that Roy and several dozen others here have made good
livings, written respected books, and designed antenna systems that
defined how good it can get? And all you have done is call them names?

Sounds like the "so called experts" are a lot effing smarter than you.

All you have done is throw stones, which is what you accuse all of us
of, by the way. And you haven't given a microgram of proof that what
you believe is true.

tom
K0TAR

Not a reasonable answer, could be speculation like some of the comments
I get from experts. The yagi is not totally efficient in changing the
time changing field to a radiative field
because it has detuned elements contrary to what Roy states that a
reflector aids the forward lobe.......that is trash talk but many of
the so called experts are following like lemmons


Tom Ring wrote:
art wrote:

Tom Ring wrote:

art wrote:
snip

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Actually Art, you are already the master of misunderstanding.

tom
K0TAR

See Tom you had nothing of value to say about antennas or the question
at hand
I think you would be better conversing with members of this group who
are intent on disruption and stop questions on antennas. What goes
around comes around so I will not answer in kind. If you want to stick
with the idea that a yagi is the next thing to sliced bread then be my
guest Better still study up on the code so you can join friends.


And to continue the theme -

Actually Art, yagis are usually better than 95% efficient.

tom
K0TAR