Pridnestrovian radio center = https://tourismpmr.org/en/registry/radioczentr-odna-iz-glavnyh-dostoprimechatelnostej-grigoriopolskogo-rajona/
Laster observations/reports suggest 999kHz is on air 24/7 and 621 kHz, most likely from 15:00..~18:20 (local) + 20:30..21:30 (TWR)
Steve Whitt to mwcircle iog (2023-03-23)
621 kHz came on with brief test tones at 1826 UTC, then silence until ID and start of programme at 1830 UTC. Mostly underneath Spain. (Listening on BDMR)
Mark Hattam to mwcircle iog (2023-03-23)