Usually if you have just put up equipment on a new or moved station (which this station actually is, having moved the tower), you want to air something other than nothing or constant IDs to see how your system is performing. That's why you find a lot of new stations once they go on air usually air music from the engineer's personal music collection as opposed to the final format (where in many cases the studio is being built at the same time).
That's why you hear an eclectic mix of music before the owner finally takes over and programs the final station