Just caught the end of the program here with YL at 1956 UTC with email address...
bigjohnsonradio@gmail.com , a brief announcement by OM into a version of "Big Ten Inch Record" (at first I thought it sounded like a YL, but listening back on the recording, more likely an OM (Not the Aerosmith cover but maybe the original by Bull Moose Jackson?),
1959 UTC YL announcer with email address, then a 10 note Chimes Interval Signal repeated 6 times (This WAS the old Radio Moscow IS)
2000 UTC OFF
Posting has been edited after I listened back on the recording several times