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LF: old CIA-Report about VLF-EARTH-CURRENT-COMMUNICATION

To: [email protected]
Subject: LF: old CIA-Report about VLF-EARTH-CURRENT-COMMUNICATION
From: Eike DL3IKE <[email protected]>
Date: Tue, 19 Jun 2018 16:56:27 +0200
In-reply-to: <6DB8451D7F3D3947A5918808A59621EA07C8B045@servigilant.vigilant.local>
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Hi all,

find here an interesting CIA report about VLF-EARTH-CURRENT-COMMUNICATION from Oct 1960:

https://www.cia.gov/library/readingroom/docs/CIA-RDP78-03424A000400090001-9.pdf

73s de Eike DL3IKE
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