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Old August 25th 05, 01:06 PM
CD
 
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Default Antenna improvements?

Hey all,

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting. I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.

Thanks!

CD

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Old August 25th 05, 01:48 PM
Dave
 
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you missed cfa, and plasma antennas i think.

"CD" wrote in message
oups.com...
Hey all,

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting. I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.

Thanks!

CD



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Old August 25th 05, 04:56 PM
CD
 
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Default

I've also skimmed through some CFA, Plasma Antennas, and DDRR stuff.
Out of these, I think Rob Vincen'ts DLM looked promising. I've read
through the test report for some of his antennas and they look
promising. However, I don't think he's tested his pieces on the lower
AM bands. As for the others, I'm not quite sure about them.

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Old August 25th 05, 10:05 PM
Allodoxaphobia
 
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On Thu, 25 Aug 2005 12:48:54 -0000, Dave wrote:
"CD" wrote:

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting. I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.


you missed cfa, and plasma antennas i think.


And all the antennas featured in the April issues of QST going
back many decades. HI!HI!

[ sloppy top-posting corrected. ]

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
Pueblo, Colorado | @ | Jonesy | OS/2 __
38.24N 104.55W | config.com | DM78rf | SK
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Old September 29th 05, 03:31 PM
Asimov
 
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Default

"Dave" bravely wrote to "All" (25 Aug 05 12:48:54)
--- on the heady topic of " Antenna improvements?"


Physicists bounce radar off meteor trails in the upper atmosphere.
This ionized air path reflects radio waves and can be detected.


Da From: "Dave"
Da Xref: core-easynews rec.radio.amateur.antenna:215723

Da you missed cfa, and plasma antennas i think.

Da "CD" wrote in message
Da oups.com...
Hey all,

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting. I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.

Thanks!

CD


.... Acme Corp: Unlimited credit for disadvantaged coyotes.



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Old October 1st 05, 05:12 PM
Roger Conroy
 
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Default


"Asimov" wrote in message
...
"Dave" bravely wrote to "All" (25 Aug 05 12:48:54)
--- on the heady topic of " Antenna improvements?"


Physicists bounce radar off meteor trails in the upper atmosphere.
This ionized air path reflects radio waves and can be detected.


You don't need to be a physicist to do it.
Many Hams (without degrees in physics) do it routinely, and what's more,
they don't merely "detect" the reflected radio waves, they actually achieve
useful communication with them.

73
Roger ZR3RC


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Old October 2nd 05, 02:17 AM
Tom Ring
 
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Default

Roger Conroy wrote:

"Asimov" wrote in message
. ..
"Dave" bravely wrote to "All" (25 Aug 05 12:48:54)
--- on the heady topic of " Antenna improvements?"


Physicists bounce radar off meteor trails in the upper atmosphere.
This ionized air path reflects radio waves and can be detected.



You don't need to be a physicist to do it.
Many Hams (without degrees in physics) do it routinely, and what's more,
they don't merely "detect" the reflected radio waves, they actually achieve
useful communication with them.

73
Roger ZR3RC



Meteor scatter is pretty common among us folks that get our butts out of
the HF ghetto upon occasion. That, plus the occasional second hop on E,
AuE, TE, or F (when in season) can provide a nice DX surprise.

tom
K0TAR
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Old October 2nd 05, 05:37 PM
Dave
 
Posts: n/a
Default


"Tom Ring" wrote in message
.. .
Roger Conroy wrote:

"Asimov" wrote in
message
...
"Dave" bravely wrote to "All" (25 Aug 05 12:48:54)
--- on the heady topic of " Antenna improvements?"


Physicists bounce radar off meteor trails in the upper atmosphere.
This ionized air path reflects radio waves and can be detected.



You don't need to be a physicist to do it.
Many Hams (without degrees in physics) do it routinely, and what's more,
they don't merely "detect" the reflected radio waves, they actually
achieve useful communication with them.

73
Roger ZR3RC


Meteor scatter is pretty common among us folks that get our butts out of
the HF ghetto upon occasion. That, plus the occasional second hop on E,
AuE, TE, or F (when in season) can provide a nice DX surprise.

tom
K0TAR


hey, meteor scatter works on hf also! i use it on 10m regularly.


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Old August 25th 05, 05:00 PM
Richard Clark
 
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Default

On 25 Aug 2005 05:06:31 -0700, "CD" wrote:

Hey all,

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting.


In your area of Clearwater FL, that shouldn't be a problem - what with
all that seawater lapping at your ankles (metaphorically speaking, of
course).

I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.


That is a contradiction in goals.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.


Then you should be warned that stumbling is par for the course.

Consult the archives.

73's
Richard Clark, KB7QHC
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Old August 25th 05, 09:33 PM
Fred W4JLE
 
Posts: n/a
Default

Do a Google search on CFA antennas. Touted to be the most fantastic antenna
since sliced bread. You might also visit fractenna.com for another source.

"CD" wrote in message
oups.com...
Hey all,

I was curious if you are aware of any new antenna developments /
techniques in regards to AM broadcasting. I'm specifically interested
in smaller AM antennas with high power ratings and a broadband response
between the AM channels.

I've already stumbled upon DLM from the University of Rhode Island,
Fractal Antennas from UCLA, EH Antennas from Ted Hart, Isotron, etc.

Thanks!

CD





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