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Posted by Glenn on January 23, 2026 at 04:10:17.
In Reply to: Re: VLF communications through earth's crust posted by Ed, KI6R on January 23, 2026 at 02:36:25.
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I am uncertain. As stated before I have "heard" of soldiers communicating up to 10 miles. And as stated before the ground conditions and a few other things would also influence this. So, Idono! 500 watts into the ground? I bet that would wake up some nearby earthworms. I have read that the military has experimented with landmass antenna many miles long dumping a lot of power into the ground. The results I have not stumbled onto.
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