In article ,
says...

Nothing to do with coupling the Tx energy to the "atmosphere". Terminating the
line in a resistor of the line's charactertistic impedance will present a nice
SWR and radiate very little.

I beg to differ, and I would invite you to think further on this
topic.

An antenna is a coupling device. Its purpose is to efficiently
"couple" or radiate your signal into another transmission medium (open
space, including our atmosphere).

The antenna (effectively an inductor) needs to be resonant at your
operating frequency of choice. It seems to me that the density and
composition of the transmission medium you're coupling to has an effect
on any antenna's resonant frequency.

This, to my understanding, means that an antenna designed for use
in open air will not work underwater, nor will, say, a VLF antenna
designed for submarine usage work in open air.

If you believe I'm misunderstanding, then please point me to some
documentation on the subject, and I will cheerfully STFU.

Keep the peace(es).


--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"