I've been sitting here listening to some sort of ditters on 13560.75 MHz on Sunday January 12 from about 1845Z to 1910Z (so far). In general there will be a string of 9 or 10 fast dits followed by a dit approximately every 1.3 seconds for several minutes, then two rapid dits and a long pause, then starting up again. There have been variations where seemingly random groups of fast dits in groups of 4 to 16 were sent. For a while there was another ditter about 50 Hz lower in frequency than the main one, which was only active for a couple minutes. It seemed to follow a similar pattern.
The frequency of the ditter seemed to slowly drift up and down over a few Hz range.
Right now (1910Z) it's been silent for several minutes.