On Sep 6, 11:41*pm, Art Unwin wrote:
On Sep 6, 2:00*pm, Roy Lewallen wrote:

On 9/6/2010 8:59 AM, K1TTT wrote:

magnetic coupling to the stream seems kind of odd, but it appears to
work for him. *i wonder what happens if you go qro? *i would expect
some heating of the water and maybe even some ionization or corona
that might cause instability in the stream. *i would also guess the
tuning would be difficult in high winds.

Wind would seem to be a weak point. The top of the conductive stream
would dissipate at different heights depending on the wind velocity, so
a gusty wind would be constantly altering the effective antenna length.

Roy Lewallen, W7EL

Part of the speal given talked about the scarecity of real estate for
the many antennas on ships! Why don't they use non frequency dependent
antennas so antennas can be shared, especially when in combat? And
what do submarines use for antennas
when in the stealth mode?

i would tell you, but then i would have to kill you!