A new TRAM-100 transmitter with which the frequency had after long silence been reactivated in early 2015 for new Russian broadcasts of Radio Ukraine International, launched in 2014 on 1431 kHz (Luch, 800 kW or whatever power they were running). Due to the chronic lack of money both frequencies closed again in early 2018.
Concerning 549 kHz see the graphic herein and anything else remains speculation:
By the way, what’s carried as radio program is, I’m told, meanwhile throughout the audio of the unified TV program. Some spot checks I did appeared to confirm that.
Kai Ludwig to WOR iog (2022-02-12)