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Re: 2.4 ghz antenna



Hi Jesse,
    Normal practice in "waveguides" is to put the "probe" throught the side
of the can, 1/4 wavelength form the closed end. if the coffee can is several
wavelengths in diameter, then the 1/4 wavelength is close to the 1/4
wavelenght in free space. If the coffee can is close to being a 1/4 free
space wavelength in diameter the "waveguide" 1/4 wavelength is longer than
that of free space. If this is the case let me know and I will send you the
formula.

Regards,

Murray Peterson
VK2KGM
Sydney, NSW,
Australia.
----- Original Message -----
From: "Jesse Morris" <w4mvb@juno.com>
To: <amsat-bb@AMSAT.Org>
Sent: Friday, January 26, 2001 12:45 AM
Subject: [amsat-bb] 2.4 ghz antenna


> Good Morning to all,
>
> Can someone in tahe group tell me where to put the quarter wave probe in
> a 1 pound coffee can and approximately how much gain it should have (yes
> I really do have a 1 pound coffee can)?
>
> Thanks,
>
> 73 de Jess - W4MVB
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

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