The LONGWAVE MESSAGE BOARD
Re: VLF communications through earth's crust

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Posted by Gedas W8BYA on January 23, 2026 at 21:54:12.

In Reply to: Re: VLF communications through earth's crust posted by Bruce WA1HGJ on January 23, 2026 at 14:00:31.

Hi Bruce. May I suggest you check out the Sub9khz group on groups.io. I think you can get all your questions answered. If memory serves me right transmissions down there are unregulated. 73 Gedas W8BYA

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