Messges from space?

Not sure when it stared doing this, totally random times. I could have it laying beside me all quiet while recovering a target and then it will start up out of the blue. Tones change, not noticing a pattern but the frequency (beats per minute) is always the same. Is this a send it in to be fixed thing?
Fisher CZ-21



https://www.youtube.com/watch?v=xfusoQwBml0