SDR recording catch:
0518 Carrier came on, no audio heard, very weak
0522 Off
0542 On for a minute or so
0550 On again for about a minute
0553 On again briefly
0556 On until 0600
0603 Back on
0642 Hearing someone singing, much stronger than earlier, I suspect this is someone else coming on frequency, and not the station in question?
0743 Carrier off
As per Comrade Dickweed this was NOT Radio Free Whatever as I first thought.