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🇷🇺RDL - Russian Navy strategic station sending a one-way ciphered message in FSK-Morse mode on 16112kHz. This message was almost certainly also sent on VLF 18.1kHz to submerged submarines. Message: RDL RDL RDL 97552 57623 97552 57623 97552 57623 K RX in 🇮🇹Milan 06:15UTC Sept21

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Shortwave Observer

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🇷🇺Russian Navy strategic broadcast “RDL” sends one way ciphered message on 16112kHz. Digital T-600 and FSK-Morse. The same message was sent to submerged submarines on VLF (Very Low Frequency) 18.1kHz Received in 🇮🇹Milan 08:34UTC Oct 18
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