Thread: Let's design a short antenna just for fun
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Old November 8th 14, 05:25 PM posted to rec.radio.amateur.antenna
Lostgallifreyan Lostgallifreyan is offline
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First recorded activity by RadioBanter: Sep 2006
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Default Let's design a short antenna just for fun
wrote in :

The resistivity of stainless steel is about 35 times that of copper and
about 20 times that of aluminum.

This will make a big difference for a wire antenna, but less for one
of fat tubing or rod, however stainless tubing is both heavy and expensive.

It would all be a bunch of engineering trade offs that would depend on
what one wants to accomplish.

If it happens that your brother-in-law can get you stainless at a good
price...


I have no brother-in-law. But I usually have a bit of stainless steel
around.

Ok, so no high current transmitters unless some sturdy mechanical design is
used. What about QRP? I understand that high efficiency and a large antenna
is best for very low power transmitters, and given the lower currents
involved, would I^2R losses be low enough to be pretty much as viable as for
reception? This strays from the short antenna subject, but I'm interested
enough to ask anyway.

(If I needed to use tubing, I'd consider aluminium for lighter weight
combined with more stiffness.)
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