[Spooks] Super strange signal at 5241 kHz in USB mode

[Curt Rowlett]

I really have no idea exactly what this signal is. It is a bit similar to
the "XM Whales/Backwards Music Station" signal, but not exactly. I was
notified by a friend earlier this morning that this was transmitting on
5241 kHz but I was away from my computer at the time. But as you can see,
it was still going strong hours later.

Video of the signal here: https://youtu.be/I23xouOBgJM

Recorded via the SDR located in Mala, Sweden:
http://aspliden.mooo.com:8073/?f=5421usb

Curt / W9SPY