This morning when Stumpy came online the pause between dits and the dit length is changed. I do not try to catch it every day, but the last time I did (a few days ago) it was still about 22 seconds from dit to dit, and dit length about 0.17 sec. But this morning I caught the turn on at about 1429 UTC, and it was 19.37 seconds dit to dit, and dit length is only 0.15 sec.
I thought at first it may be a "just turned on" thing, but an hour later it is still on the same spacing and length. Also, the freq is slightly higher than it has been.
T!