According to this post the next transmission center is being sold and dismantled.
“Leningrad region. Radio center #11 Krasny Bor.
Before you is a transmitter broadcasting the program “Radio Teos” at a frequency of 1089 kHz.
Stopped in 2016. It was the last working transmitter.
The radio center is being dismantled. The land is being prepared for sale”

Marco (2023-05-22)