It sends the five dits, pauses for about two seconds, and sends five dits again with this pattern repeating as shown in the YouTube video. Like it is sending Morse "5 5 5 5 5..." Sometimes it pauses for a bit longer between sets of five dits. There might be a pattern to that, it has faded before I could really determine the overall timing. It sometimes sends six dits. At one point I heard and saw in the waterfall both five and six dits slightly off frequency from each other at the same time. I have friends in Colorado and Florida who also hear it. Seems to be fairly regular here between 17:00 and 18:00 UTC. I am hearing it today at 17:30 UTC.