Thread: No antennae radiate all the power fed to them!
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Old November 2nd 14, 09:28 PM posted to rec.radio.amateur.antenna
Lostgallifreyan Lostgallifreyan is offline
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Default No antennae radiate all the power fed to them!
wrote in :

Radiative cooling
does not provide for a lot of cooling.


Well, no, that was sort of what set me on this chase. I was thinking that
so little radiation would occur that TINY sources might raise the temperature
of an uncooled superconductor to the point where it stopped working. Take
your grocery store foil,. for example, tiny holes might cause it to leak
enough energy through. (The JWST uses many layers in a bid to prevent that).
I don't know what the margins are but I suspect they could be small and
highly variable. That's why experiment will be useful. No substitute for
trying, measuring, it's just a question of when and why it becomes worth it.
(I'm not arguing for antennas here, just for general trials of
superconductors in those conditions where nature most conveniently places
favourable conditions for their use).
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