I have for years been a Short Wave Radio listener and during the Cold War of the 1980's was always trying to track down radio broadcasts from within the Soviet Union. The most famous was known as the "Russian Woodpecker" which came from a transmitter now known to have eminated from Pripyat in the Ukraine. This ceased transmissions after the Chernobyl disaster. But another transmission only gave out random numbers 24/7, 365 days a year. Its purpose always alluded me! But never the less it fascinated me, and still does. When the CW ended in theory the transmissions should have ended, but not so! Today it still carries on!
Read the article below for a fascinating insight into a CW Enigma