U.S. Navy engineers at Space and Naval Warfare Systems Center Pacific in San Diego, Calif., have developed a system to use a stream of seawater as a radio antenna. Seawater is pumped through a magnetic probe to receive and transmit communication signals. The frequency and the bandwidth of the signal can be altered by adjusting the height and diameter of the stream.
Navy engineers develop seawater antenna
Posting in Technology
U.S. Navy engineers at Space and Naval Warfare Systems Center Pacific in San Diego, Calif., have developed a system to use a stream of seawater as a ...
Jan 27, 2011
Too bad no technical details i.e. Frequency, distance covered. etc. are shown.. I believe even the frequency shown on the dial of the Hand-held tranceiver is not on a approved Amateur Radio band plan.. altho the use of call signs would make it appear legit.! This lack of information.. reduces the value of such a presentation. Radio Ham (in New Zealand)
Try your local garden center; a little pond pump and a box of Epsom salts should get you started. This might also be an excuse to finally invest in a Crazy Straw, just to see what happens... The trick is to guide a stream of conductive water through a wire coil impedance-matched to your favorite disposable antenna amplifier. Hook up your signal and wave your RF detector around the stream; there should be something there. Making the stream the right geometry to radiate efficiently would be big trick. I suspect that a Crazy Straw would work better than a simple freespringing fountain jet as an antenna. Perhaps 30 feet of 3/4-inch PVC pipe laid horizontally?
In the late 70s we were using water spouts - trees - ionized air and even people as antennas - most were adequate radiators. So my comment: many have been there done it ? decades ago. Side Bar: A vertical antenna is defined as an antenna that radiates poorly in all directions ? a conductive fluid antenna doubly so.
well, somedays ago Ive watched something like that at youtube...something like a wet earth radio antenna, maybe they copy the idea from them.