Unidentified Russian station on 4807 LSB

The station was recorded on 22 August at 1810 UTC. At 00:45 at the recording, I switch to 4807 LSB where there's a morse code station. Than I come back to 4806 LSB to listen to more traffic from the Russian station. Does anyone have an idea what's the purpose of the station? Very few utility stations use LSB.