Picked it up two Sundays running at around 2a, somewhere near the bottom of the band. Woman's voice, five figure groups, English, no interval signal I could find and no sign-off either.
Second Sunday it stopped in the middle of a group. Not faded, not jammed. Stopped, and the carrier stayed up for another ninety seconds of nothing before it went.
I have heard a lot of these and I have never heard one quit halfway through a group. Whatever those are for, the whole point is that the message is complete.