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LF: VLF "Through the Earth" Comms

from [Warren Ziegler] [Permanent Link][Original]
To: rsgb_lf_group <[email protected]>
Subject: LF: VLF "Through the Earth" Comms
From: Warren Ziegler <[email protected]>
Date: Wed, 9 Jan 2013 22:46:59 -0500
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A friend of mine who does caving pointed me to a company that makes VLF equipment for use in mines, railway tunnels etc. It operates in the 400Hz-8kHz range.
If interested take a look at their web page:



--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

 
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