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Biggest antenna ever constructed



 
 
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  #1  
Old May 18th 05, 07:17 PM
Chris
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Default Biggest antenna ever constructed

?


  #2  
Old May 18th 05, 07:55 PM
Cecil Moore
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Chris wrote:
?


Ariceibo?
--
73, Cecil http://www.qsl.net/w5dxp


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  #3  
Old May 18th 05, 07:56 PM
Fabian Kurz
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Chris didn't write:
Biggest antenna ever constructed?


Maybe http://www.naic.edu/public/the_telescope.htm ?

73,
--
Fabian Kurz, DJ1YFK * Dresden, Germany * http://fkurz.net/
  #4  
Old May 18th 05, 08:24 PM
Jim Kelley
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Fabian Kurz wrote:

Chris didn't write:

Biggest antenna ever constructed?



Maybe http://www.naic.edu/public/the_telescope.htm ?


Or maybe this one:

http://www.haarp.alaska.edu/

ac6xg

  #5  
Old May 18th 05, 08:30 PM
harrogate2
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"Cecil Moore" wrote in message
...
Chris wrote:
?


Ariceibo?
--
73, Cecil http://www.qsl.net/w5dxp


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As a single antenna, probably.

But as an 'effective' antenna what about that line of dishes on tracks
near Cambridge that ISTR is equivalent to a dish 3 miles across!


--
Woody

harrogate2 at ntlworld dot com


  #6  
Old May 18th 05, 08:40 PM
Dave Platt
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In article ,
harrogate2 wrote:

Ariceibo?


As a single antenna, probably.

But as an 'effective' antenna what about that line of dishes on tracks
near Cambridge that ISTR is equivalent to a dish 3 miles across!


Even bigger-effective-aperture telescope systems use very-long-
baseline interferometry to combine the signals from multiple receivers
spread out all across the planet, and even on satellites. There are
some VLBI systems using satellites in earth orbit, and I believe that
there are plans (or even systems in existence) which use satellites in
solar orbit.

The angular resolution you can get from these systems is sorta scary.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
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  #7  
Old May 18th 05, 09:06 PM
Roger Conroy
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"Chris" wrote in message
...
?

If you exclude various multi dish arrays then the biggest is Arecibo radio
telescope in Puerto Rico.


  #8  
Old May 18th 05, 10:40 PM
Thierry
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"harrogate2" wrote in message
...

"Cecil Moore" wrote in message
...
Chris wrote:
?


Ariceibo?
--
73, Cecil http://www.qsl.net/w5dxp


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As a single antenna, probably.


Arecibo remains the largest fixed antenna.
The largest steerable is DSN... 70 m
ham : probably the low band beam used by JARL ?

73
Thierry
http://www.astrosurf.org/lombry


But as an 'effective' antenna what about that line of dishes on tracks
near Cambridge that ISTR is equivalent to a dish 3 miles across!


--
Woody

harrogate2 at ntlworld dot com




  #9  
Old May 18th 05, 10:54 PM
Caveat Lector
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The Moon

Amateurs use it frequently as a passive reflector

Constructed about 4.5 billion years ago

Builder GØD

--
CL -- I doubt, therefore I might be !






"Chris" wrote in message
...
?



  #10  
Old May 18th 05, 11:42 PM
Ham op
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Caveat Lector wrote:

The Moon

Amateurs use it frequently as a passive reflector

Constructed about 4.5 billion years ago

Builder GØD


God must have missed a design principle in electromagnetics. The moon is
a convex surface more suited to scattering than concave which is more
suited to focusing ... or is it the other way around?

 




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