HFU HF Underground
Loggings => Other => Topic started by: Dag on April 05, 2014, 1009 UTC
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(https://www.flickr.com/photos/7390306@N03/13640487494/)
I copied this signal for about an hour on 13195 kHz. The tones are spaced at approximately 65 Hz, drifting around 13195 kHz +/- 1 kHz, about S3 to S1 at east coast U.S.
Spectrograph:
https://www.flickr.com/photos/7390306@N03/13640487494/
Audio:
https://onedrive.live.com/#cid=F98FA31C5C423B77&id=F98FA31C5C423B77!102 (https://onedrive.live.com/#cid=F98FA31C5C423B77&id=F98FA31C5C423B77!102)