It is no longer necessary to use liquid helium to attain
superconductivity. When last I checked, advances with ceramic materials
had pushed superconductivity close to liquid nitrogen territory, and the
goal of room-temperature superconductivity was still considered a
possibility. See
http://www.newscientist.com/news/news.jsp?id=ns99991618, for example...
73,
Dave, AA6YQ
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of
gdaught6@stanford.edu
Sent: Tuesday, June 08, 2004 11:59
To: towertalk@contesting.com
Subject: Re: [TowerTalk] URI magic antennas
What about supeconducting loading coils and/or elements? One could
generate VERY high currents with low losses (unless you count the
energy requirement of keeping an RF-transparent thermos of liquid
helium full.) Just the sort of thing a University Physics lab could
do.
Let's submerge our screwdriver mobile antennas in a cryogenic
container. An additional advantage would be that no bugs would nest
in there!
73,
George T. Daughters, K6GT
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
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