On 3 Jul, 09:40, art wrote:
On 17 Jun, 16:13, "Mike Kaliski" wrote:





"John Smith I" wrote in ...

Actually, old news from 3 years ago ...

http://www.eetimes.com/showArticle.j...cleID=21600147

JS

The guy doesn't even seem to realise that height is one of the prime factors
in optimising propogation, particularly at medium wave frequencies and vhf.
Building a tall mast costs plenty of money and if commercial radio stations
could broadcast efficiently from an antenna the size of a bean can, they
would have done it years ago.

This is surely just a couple of coils wound in opposite directions with
capacitive coupling and a capacity top hat to prevent coronal discharge and
maximise current in the top half of the antenna. Basically a form of top
loaded, inductively wound whip antenna tapped somewhere up from the base in
order to pick up a 50 ohm matching impedence at the design frequency. I
don't see any new or innovative principles at work here.

Now if he could make it work efficiently on all frequencies with 50 ohms
impedence and with no requirement for further matching or adjustment of any
sort, I would be impressed. :-)

Mike G0ULI

Mike
The antenna is based on confirmed scientific findings of the masters
and can be proved mathematically as one would expect from such an
antenna.
It is true that what happens to radiation when it is formed is
important
but what is more important is to understand radiation in its formative
stage.
When this is understood then miniturisation comes to the fore that
may
well be more important than the TOA but then even this antenna can be
raised in height. There is a lesson to be learned here. The Yagi was
invented by the Japanese in the early 1920 where America embraced the
invention
and where Japan did not. That same invention proved to be one of
Japans
undoing as they never caught on to the importance possibly by
beurocracy.
This new antenna has been pushed aside by America where I am positive
other Countries are moving fast ahead and now have 3 years lead to
play with.
It is America this time that is complacent. The antenna is there,
the mathematics is there and Maxwells laws are still there, all of
which conform with each other both with this antenna and my Gaussian
antenna but who cares.
Art Unwin KB9MZ.......XG- Hide quoted text -

- Show quoted text -

Mike,
As a Londoner you will appreciate the following. When the war finished
I started my first real schooling at a school that was surrounded by
blocks of debris
but the school was still standing. It was destroyed in WW1 with about
30+ kids dead.
Finally dad got demobbed and came home to our house which was a bomb
damaged house
because the other house was flattened.We as a pair went to Petticote
lane on Sundays
because dad had a interest in radio and I had to get the water
batteries to run it.
One day dad came back from Petticoat lane and brought home with him a
coil of wire
that you plugged into an outlet and that was the new antenna. I had
not had much
schooling up to that time and at the age of 14 had only one year
before one had
to leave and go to work. Mum got me into a school at dockside for
ships
engineers and navigators and tho a year late I at least got two years
of
education despite the war which followed by years
and years of night school I got the education that any college kid
even tho
I was 10 years older. Now I have the mantra that if it is" resonant
and in a
state of equilibrium" it is what I call a Gaussian antenna. So here
at near
the end of my life I finally got to the bottom of the science that
dad
put before me as peace settled on the East End of London. What dad
plugged into the wall was an antenna that was "resonant and in a
state
of equilibrium" and where its resonance was in the AM band.
60 years later his son resolved the question because of the pursuit
of an education.
Shame he isn't alive to hear 'the rest of the story'
Cheers and beers
Art Unwin KB9MZ.......XG

snip
Mike,
As a Londoner you will appreciate the following. When the war finished
I started my first real schooling at a school that was surrounded by
blocks of debris
but the school was still standing. It was destroyed in WW1 with about
30+ kids dead.
Finally dad got demobbed and came home to our house which was a bomb
damaged house
because the other house was flattened.We as a pair went to Petticote
lane on Sundays
because dad had a interest in radio and I had to get the water
batteries to run it.
One day dad came back from Petticoat lane and brought home with him a
coil of wire
that you plugged into an outlet and that was the new antenna. I had
not had much
schooling up to that time and at the age of 14 had only one year
before one had
to leave and go to work. Mum got me into a school at dockside for
ships
engineers and navigators and tho a year late I at least got two years
of
education despite the war which followed by years
and years of night school I got the education that any college kid
even tho
I was 10 years older. Now I have the mantra that if it is" resonant
and in a
state of equilibrium" it is what I call a Gaussian antenna. So here
at near
the end of my life I finally got to the bottom of the science that
dad
put before me as peace settled on the East End of London. What dad
plugged into the wall was an antenna that was "resonant and in a
state
of equilibrium" and where its resonance was in the AM band.
60 years later his son resolved the question because of the pursuit
of an education.
Shame he isn't alive to hear 'the rest of the story'
Cheers and beers
Art Unwin KB9MZ.......XG

Art

Even though I was born some years after the war ended, I do have some old
magazines and articles that mention such an antenna. I believe that there
were two or three (perhaps more) rival designs around in the 50's possibly
into the early 60's that claimed to improve radio reception dramatically.
The arrival and shift of interest into television seems to have sounded the
death knell for these devices.

As I recall, some of the pundits at the time were rather disparaging about
these miracle antennas and indeed most designs were proved to be fraudulant,
but one design did actually work and genuinely provided improved
performance. I would guess that this was probably the one your dad acquired.
I believe the design that worked did so because it achieved a genuine
impedence match wereas the others were just devices that hooked up the radio
to the house mains and used that to provide an antenna. Not very safe at
all!!! One device proved to be just a high resistance wirewound resistor
connected to the mains.

So the genuine device did achieve provide a proper match and achieved a kind
of what might be termed equilibrium with the receiver. These devices weren't
particularly cheap to buy either. Looking at antenna prices today, I see
that hundreds of dollars can be spent on a couple of dollars worth of
fibreglass, aluminium and a bit of wire, so things haven't changed that much
I guess. That is surely why rec.radio.amateur.antenna exists and is so
popular; to provide an alternative to those people that do want to think for
themselves rather than blindly following the path commercial manufacturers
dictate.

Regards

Mike G0ULI

Art wrote:
"Now I have a mantra that if it is "resonant and in a state of
equilibriun" it is what I call a Gaussian antenna."

Yes, and the question still remains, are the lyrics sung because they
are too silly to be repeated without the music?

Best regards, Richard Harrison. KB5WZI

On Wed, 4 Jul 2007 10:44:31 -0500, (Richard
Harrison) wrote:

Art wrote:
"Now I have a mantra that if it is "resonant and in a state of
equilibriun" it is what I call a Gaussian antenna."

Yes, and the question still remains, are the lyrics sung because they
are too silly to be repeated without the music?

Hi Richard,

Still sharp as ever. :-)

73's
Richard Clark, KB7QHC

Art, KB9MZ.....XG wrote:
"The Yagi was invented by Japanese in the early 1920 where America
embraced the invention and where Japan did not."

Close but no cigar. Truth Squad time again.

The 3rd edition of Kraus` "Antennas" has the Yagi-Uda Story beginning on
page 246. It Says:
"This led to the publication of a series of articles from March 1926 to
July 1929) in the Journal of the Institute of Electrical Engineers of
Japan titled "On the Wireless Beam of Short Electric Waves." (Uda-1)."

Best regards, Richard Harrison, KB5WZI

On 4 Jul, 08:07, (Richard Harrison) wrote:
Art, KB9MZ.....XG wrote:

"The Yagi was invented by Japanese in the early 1920 where America
embraced the invention and where Japan did not."

Close but no cigar. Truth Squad time again.

The 3rd edition of Kraus` "Antennas" has the Yagi-Uda Story beginning on
page 246. It Says:
"This led to the publication of a series of articles from March 1926 to
July 1929) in the Journal of the Institute of Electrical Engineers of
Japan titled "On the Wireless Beam of Short Electric Waves." (Uda-1)."

Best regards, Richard Harrison, KB5WZI


The truth!
Where is the lie?

Art wrote:
"Where is the lie?"
The inventors were not without honor on their own land!

Best regards, Richard Harrison, KB5WZI

John Smith I wrote:
Actually, old news from 3 years ago ...

http://www.eetimes.com/showArticle.j...cleID=21600147

JS

This:
"It would seem that despite the naysayers, the DLM antenna does work and
quite well at that. Rob suspects that many homemade DLMs are now on the
air in Europe and on our US west coast, judging from the e mail traffic
he has received. Nice work, Rob!"

Taken from he
http://www.arrlri.org/modules/news/print.php?storyid=14

Should be a good indication of the power the naysayers here have to
dis-inform and promote their own personal views. Close attention should
be made to the names and calls involved, and especially in further use
of this newsgroup.

Regards,
JS

On Tue, 19 Jun 2007 22:49:42 -0700, John Smith I
wrote:

John Smith I wrote:
Actually, old news from 3 years ago ...

http://www.eetimes.com/showArticle.j...cleID=21600147

JS

This:
"It would seem that despite the naysayers, the DLM antenna does work and
quite well at that. Rob suspects that many homemade DLMs are now on the
air in Europe and on our US west coast, judging from the e mail traffic
he has received. Nice work, Rob!"

Taken from he
http://www.arrlri.org/modules/news/print.php?storyid=14

Should be a good indication of the power the naysayers here have to
dis-inform and promote their own personal views. Close attention should
be made to the names and calls involved, and especially in further use
of this newsgroup.

Regards,
JS

Where are instructions on building them?
--
73 for now
Buck, N4PGW

www.lumpuckeroo.com

"Small - broadband - efficient: pick any two."

Buck wrote:

...
Where are instructions on building them?

Buck:

You just have to go on the scanty details presented in the news
releases, I can't even find a picture of the darn thing.

However, I threw together a 1/2 wave - 6.5 ft. (includes 12 inch
adjustable whip and disc top hat at base of whip.) "Plano Helix Coil"
constructed by drilling two sets of holes on opposing sides of 1.125 pvc
pipe, wire is then "laced" through these holes - forming a series of
"hair pin loops" running the length of the pvc pipe.

This gives an apparent equal radiated power on a sensitive homebrew FSM
located ~3 wavelengths away as compared to a 1/4 wave 102 inch whip
w/loading coil on 10 meters, both mounted as mobile antennas on the auto.

I have no idea how close the design of this antenna matches Mr. Vincents
design ...

The antenna is worth playing with, definitely! I too would like more
details on Mr. Vincents designs ...

Regards,
JS