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🇷🇺RDL - Russian Navy strategic broadcast - Shore to ships ciphered one-way communications. FSK-modulated Morse on HF 6962kHz. The same message was also sent on Very Low Frequency 18.1kHz to reach submerged submarines. Received in 🇮🇹Milan at 17:43utc Feb 28 2026

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Shortwave Observer

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