Obviously not data, but likely something. My guess would be something like a buoy.
Take a listen to it in LSBLower Side Band Modulation/AMAmplitude Modulation, the carrier next to it seems to suggest a possible ssb voice channel. Regardless, an odd signal to see and hear. reminded me of Distress Radiobeacon (Analog). --Cartoonman (talk) 05:37, 16 January 2016 (NZDT)
Pretty sure that was just a shortwave AMAmplitude Modulation station that was nearby, and was not part of the signal. The6P4C (talk) 22:34, 16 January 2016 (NZDT)
Hmm, I agree with you. Hard to tell what it is though, could very well be a buoy of some sort or even some rf noise made by a machine or device. --Cartoonman (talk) 13:53, 17 January 2016 (NZDT)