Jamming Ukraine Radio 657 kHz?
I heard this 1 kHz tone over UR-1 and RAI.
https://www.youtube.com/watch?v=VW3btMPfGCY
Looks like jamming signal, it was on Polish and Russian SDR’s too. Probably Russians using the occupied Chonhar (Ex. 648 kHz) transmitter for jam? I have no idea yet.
László Tringer HNG (2022-03-16)