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🇺🇸US Air Force HF-GCS (High Frequency Global Communications System). Callsign OXIDATION sending a ciphered message (EAM = Emergency Action Message) to ALL STATIONS. Received in 🇮🇹Milan at 03:54UTC Sept24 on HF 4724kHz

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Shortwave Observer

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241,463 views • 10 months ago •via X (Twitter)

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