Unidentified number station was received today from 2200 till 2206 UTC on the frequency of 6380 kHz USB with a short message, which consisted of 5-letter groups. Female voice was used for this broadcast.
Station with a same format and voice has been heard also days ago, more than once, on the same frequency and at the same time and also yesterday from 0100 UTC. So, must be, it works on a stated schedule?