What is Arecibo Radio?
On November 16th 1974, a radio message was transmitted from the Arecibo Observatory in Puerto Rico into outer space in an attempt to communicate with an extraterrestrial intelligence.
On July 8th 2009, radio telescopes around the world began receiving a transmission of an unknown origin. When decoded, the message was identified as an audio signal.
Due to similarities in the way the signal was encoded, it was determined that it was associated with the radio message transmitted from the Arecibo Observatory in 1974. Since then, the message has been referred to as the Arecibo Radio Transmission.
On August 14th 2009, Arecibo Radio was created as both an archive, and a real time broadcast of the unknown message.
The message has never stopped transmitting since first being detected.
It's source is still unknown.
Welcome to Arecibo Radio.