Wandering Tones 7076usb 0237utc 4/24/2012 : Blocks of wandering (up and down) tones that run for abt 10 seconds or so w/ roughly equal pause between. Sounds like two different streams going at once. Not sure where it's centered exactly, just seems to me to be strongest on 7076kHz.
Every few "blocks" it seems to modulate (musically) to a slightly different "key".
I'm sure someone can ID it, but I'll post a clip in a bit, just in case no one else catches it--still running at 0245utc.