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