Backward Music Station

The "Backward Music Station" doesn't really play music backwards. Here, we see what really happens. It makes weird, descending tones, and distorted voices. Note the two sidebands at top and bottom of the plot, perfectly inverted from each other, around the channel center near 6 kHz. This is not the best unwanted-sideband suppression we've ever seen. Actually, quite a few utes aren't much better. We're looking at some pretty seriously maladjusted equipment here.

The straight blue lines are BMS's characteristic, falling sine waves, inverted in the other sideband. The blue fuzz is heavily compressed and filtered circuit noise, and the squiggles, also inverted on top, are from an off-channel USB voice, possibly re-transmitted by what is obviously a heavily conditioned link.

The inverted LSB (seen higher due to the receiving process) gives the classic look and sound of the electronic music effect known as ring modulation. This is no surprise, since balanced modulators are used for both. Such noises are not harmonically related, sounding unnatural to Western ears, giving BMS its "spooky" sound.