It's been a year - I've been exploring the world of Shortwave radio and found some weird shit. 4325 KHZ on USB is my favorite, as it's a morse code station sped up very fast to hide the actual frequency (4330 KHZ)
Send me your weirdest freqs and I'll check em out.
(Picture is of The SDR at the University of Utwente, in the Netherlands)
There are many number stations still active.
These guys made a schedule:
Most of them are morse or digital, but there are still some voiced messages.
Some months ago, I listened to a NATO radar sweep. Covering a huge range on the WebSDR
That was the strangest thing I saw so far.