Strange Pulse Tone On 11220kHz

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SCPD

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Never heard this sound before. Strange pulsing tone on 11.220.5 USB. Anybody have any clues as to what this may be? Time 0044UTC


Rob
 

SCPD

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Virginia
Im no expert on ACARS systems but the rapid tones and the rhythm of the tones do not sound like ACARS. ACARS on HF usually sounds like a beep and than a long data burst. I wish I had a cable to record it. If you tune to the freq you may be able to hear it from Texas?
 

Haley

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I have heard it several times also in the last year. To me it sounds like some type of data burst. As to what it is , I have no clue. But curious also. Mike
 

Token

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I noticed this last night and took a quick look at it. It appears to be a 4FSK signal. Mike Chase-Ortiz thinks it is a TE204 4FSK system that is having a few technical problems, and I would tend to agree based on what I can find in print and on the web.

T!
 

SCPD

QRT
Joined
Feb 24, 2001
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Location
Virginia
I noticed this last night and took a quick look at it. It appears to be a 4FSK signal. Mike Chase-Ortiz thinks it is a TE204 4FSK system that is having a few technical problems, and I would tend to agree based on what I can find in print and on the web.

T!
Thanks Token! Im guessing a TE204 is some sort of military computer modem?


Rob
 
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