On Wed, 30 Jul 2003 00:30:15 +1200, you wrote: > >I read an interesting article from the Thirties once about ground currents. >You drive a couple of metal rods in the ground about 30 meters apart and >connect then to a telephone earpiece. You get all sorts of clicks and >whistling sounds (like dolphins singing), although these days, with much >more electricity used, the interesting sounds tend to be swamped out with 50 >hertz humm. > You can broadcast through the ground using a copper rod hammered into it. It's good for a few streets away as I recall. Cheers, Cliff -- Signed and sealed with Great Seal of the Executive Council of the Internet, by The Master of The Net. ------------------------------------------------------------------- To remove yourself from this list, email nzlug-request@linux.net.nz with "unsubscribe" in the body of the message.
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