Ashtar Command

From The Book of THoTH (Leaves of Wisdom)

Vrillon, representative of the Ashtar Galactic Command was the name used by an unidentified voice who broadcast on the transmitters of Southern Television in the United Kingdom for about five minutes at 5:10 PM on Saturday November 26, 1977. The voice, which was disguised and accompanied by a deep buzzing, broke in to a broadcast by Independent Television News to warn viewers of "the destiny of your race" and "so that you may communicate to your fellow beings the course you must take to avoid a disaster which threatens your world and the beings on other worlds around you".

As the broadcast did not affect vision it was difficult to detect its source, and it disappeared at the end of what sounded like a prepared statement. Most observers have concluded that the broadcast was a hoax, achieved by directing a powerful signal at a VHF transmitter high up in the distribution chain.