On Sep 6, 10:59*am, K1TTT wrote:
On Sep 6, 9:56*am, Richard Fry wrote:

Below is a link to a video describing the development work on an
interesting concept for an antenna:

*http://www.youtube.com/watch?v=9tIZUhu21sQ

RF

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.

If anything is to occur it would be at the toroid which the water is
flowing thru. In this case the
diamagnetic material is the prime mover with respect to toroidal
field.
What the feed line is doing is not mentioned and it could well be the
toroid windings alone is doing all the radiating

On 9/6/2010 10:28 AM, Art Unwin wrote:

...
What the feed line is doing is not mentioned and it could well be the
toroid windings alone is doing all the radiating

Watch the video again. If we can believe that the video has not been
manipulated then, the signals are not present until the water flows ...

I seen this done many moons ago with a thick quartz tube(s) and a column
of mercury, mercury height varied to tune ... I'll bet the "mercury"
antenna is/was immensely more efficient ... the magnetic coupling would
be a great aid in NOT having to tune the match constantly ...

Regards,
JS