Noted here as well
Checking the SDR recording...
04:47:22 Echo One went off, audio and carrier, allowing the Spooky Sound to be more easily heard
04:49:36 Feedback like noise
04:50:45 More feedback
04:52:30 jFarley's Wah Wah
04:53:05 All done?
BTW - The pescadores were active on 6925 LSB during this time, and they tend to bleed over to the USB. I could hear them, but what I noted above (and jFarley heard) does not seem to be from the LSB.