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4hv.org :: Forums :: Electromagnetic Radiation
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Sea water antenna

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PanosB_GR
Sat May 07 2011, 12:00PM Print
PanosB_GR Registered Member #1680 Joined: Fri Sept 05 2008, 04:19PM
Location: Greece
Posts: 43
Hello everyone!

I recently saw in youtube (search for "sea water antenna") a video where a guy is doing a reception in VHF using a sea water geyser, thus making a monopole antenna.

I was curious, could anyone use multiple geysers and make a directional antenna? Maybe a conical one or a horn?

Has anyone ever thought of anything like that?

Regards!
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Proud Mary
Sat May 07 2011, 01:12PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Hi there, Panos.

Experimental liquid antennas have attracted a lot of attention over the last 20 years, but never seem to break through into the mainstream.

Variable frequency ionic liquid antennas have been tuned by pumping a column of electrolyte - say CuSO4 solution - up the inside of a vertical tube until the right length has been achieved for resonance.

At VLF/ELF very high power experimental antennas have been made using the sea water around the circumference of an island as the tuned length - a variation of the slot in an (ideally) infinite metal plate often seen in UHF arrays.

I see no reason why vertical ionic liquid antennas - whether as columns inside a tube, or as free-standing jets - would not work in an Adcock directional antenna array.

If you Google Ionic Liquid Antenna and Magneto-Hydrodynamic Antenna you'll find much that will interest you smile
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Patrick
Sat May 07 2011, 06:01PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Proud Mary wrote ...

...would not work in an Adcock directional antenna array...
Freudian slip?
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Proud Mary
Sat May 07 2011, 06:19PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Patrick wrote ...

Proud Mary wrote ...

...would not work in an Adcock directional antenna array...
Freudian slip?

Just can't stop yourself thinking about it, can you, Patrick? I can not recommend too strongly the night-time use of cast iron restraints as an impediment to temptation, a most necessary practice for the avoidance of Satan's snares.
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Patrick
Sat May 07 2011, 07:58PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
HAH! ... touche Proud Mary, touche.
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