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Re: ELF: ELF!

To: [email protected]
Subject: Re: ELF: ELF!
From: Stefan Schäfer <[email protected]>
Date: Thu, 02 Sep 2010 11:54:01 +0200
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BTW, no one at all is transmitting on ELF (300 Hz... 3 kHz). This makes it a litter harder to evaluate the RX performance...


Am 02.09.2010 11:02, schrieb Roger Lapthorn:
Good luck Stefan.

It will be most interesting to see how far you can get without the assistance of "utilities conduction" as was the case with my own small tests in the summer. If my understanding is right you have to get beyond about 25km to be in the far field at this sort of frequency, so reception at 40km is a good target. I wonder if the effective loop size (in the ground) increases because of the increasing skin depth and signal penetration? If so, the results might be better than expected.

I can look at these frequencies with the kit I've already used, but doubt I'd see anything.

73s
Roger G3XBM




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