HFU HF Underground
Loggings => Utility => Topic started by: Ct Yankee on May 11, 2022, 2356 UTC
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Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time. Pauses and starts again. Can not decipher most of words spoken.
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Heard tail end of what sounded like an EAM on 6833 USB about 0:15 UTC. Maybe a USAF HF comm exercise?
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Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time. Pauses and starts again. Can not decipher most of words spoken.
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That was a USB signal from a USN station on 6988.0 with a exercise EAM.
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Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time. Pauses and starts again. Can not decipher most of words spoken.
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That was a USB signal from a USN station on 6988.0 with a exercise EAM.
Are these typical USN EAM frequencies? I'm not familiar with them.
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Over modulated (here) OM/YL giving phonetic terms (Oscar, Foxtrot) for stretches of time. Pauses and starts again. Can not decipher most of words spoken.
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That was a USB signal from a USN station on 6988.0 with a exercise EAM.
Are these typical USN EAM frequencies? I'm not familiar with them.
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No, they're just used in specific exercises.
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Some people have dubbed this activity as the "oddball frequency" exercise. It is presumed the EAM/FDM style messages are being transmitted by Navy ships on a specific scheduled. Call signs tend to the Navy style 3-character alphanumeric variety such as Bravo Nine Mike, of Seven Alfa Yankee. One interesting observation is that the messages themselves seem to be different than the EAM/FDM messages being broadcast on the HFGCS during the same time frame.