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Sea Water Antenna
Sea Water Antenna? - KB6NU's Ham Radio Blog
Here in Northern Wisconsin we love our cold weather activities. And what goes along with that is providing radio communications for winter time events. Hams in our area have been active in parades, nordic ski events, and dog sled races. With snow on the ground several months out of the year, why shut down activity for so many months out of the year just because of a little cold weather. That means proper clothing for the conditions, and the appropriate complement of equipment.
VHF & UHF Antennas
The US Navy has created a device which turns a jet of sea water into an impromptu liquid antenna, creating a powerful, high frequency broadcast tower for ships, emergency situations and easy transportation. Created by SPAWAR System Center Pacific, the sea water antenna uses the magnetic induction properties of salt to make ordinary ocean water transmit and receive radio signals. As the pillar of water is squirted through the current probe, a magnetic field is created and signal comes through to a hooked-up communication device. You can even set up multiple jets of water, at different heights, to broadcast on different bands simultaneously. The idea could prove particularly useful for ships, which struggle to find room for all the antennas on board.
There is prior? I did just that and found a few interesting references. Apparently, N9ZRT did much of the early work on this type of antenna, and his work is online. In March , some researchers published an academic paper on this topic. Unfortunately, you have to pay for this paper.