0420: have convinced myself that I'm hearing music, but it is extremely low volume/modulation
I posted separately (have removed it) from this thread and have added to it.
0427 and other times: OP is sliding down to 6935 for a second and then back to 6938 (which another station has on the air)
0430: sliding down eventually to 6920; still not enough to hear any audio that I can make out, barely visible modulation on fft