I was listening to WRMI's Radio Liberty (Russian Service) on 15770 in the 1200 utc hour, it included numerous American pop tunes including "Last Train to Clarksville". At 1300 utc the broadcast stopped and nothing came on - dead air for 15 minutes as of now, there is a broadcast scheduled.
Earlier this week a transmitter problem knocked them off the air for a couple hours on this frequency at this time, perhaps again.