Ok, to add to this mystery. Today - January 23, into Jan 24 utc date. Someone was here tuning up. WWCR was not on 6875. Sounded like the op was tuning up, with long Helloooooooooo's. Also some background noises and bits of music. Seemed to be USB.
Signal was about S4 here. 2358 to 0000 roughly.
Ahhh, I hate that I cannot shake my 6875 "problem". Guess I should drink some good bourbon to self medicate.