In 1962, a radio message in Morse code

Morse code

Morse code is a method of transmitting textual information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment...

 was transmitted from EPR (Evpatoria Planetary Radar

Pluton (complex)

Pluton is a system of deep space communications and a planetary radar. It was built near Yevpatoria in 1960, and consists of at at least three antennas. Three of them are of the ADU-1000 design, an assembly of eight mirrors, each with diameter of 16 meters...

) in 1962 and directed to planet Venus

Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...

. The word "MIR

Mir

Mir was a space station operated in low Earth orbit from 1986 to 2001, at first by the Soviet Union and then by Russia. Assembled in orbit from 1986 to 1996, Mir was the first modular space station and had a greater mass than that of any previous spacecraft, holding the record for the...

" was transmitted from the EPR on November 19, 1962, and the words "LENIN" and "SSSR" ) on November 24, 1962, respectively. All three words were sent using the Morse code. In Russian, this letter is called Radio Message "MIR, LENIN, SSSR". This message is the first radio broadcast for extraterrestrial civilizations

Active SETI

Active SETI is the attempt to send messages to intelligent aliens. Active SETI messages are usually in the form of radio signals. Physical messages like that of the Pioneer plaque may also be considered an active SETI message...

 in the history of mankind, it was also used as a test for the radar station (but was not used for measuring the distance to Venus because for distance measurements the EPR uses coherent waveform with frequency manipulation): The signal reflected from surface of Venus

Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...

 and was received 4 minutes 32.7 seconds (Nov 19) and 4 minutes 44.7 seconds (Nov 24) later.

Now this radio message is flying to the star HD131336 in the Libra constellation (it is very interesting to note that the famous star Gliese 581

Gliese 581

Gliese 581 is a red dwarf star with spectral type M3V, located 20.3 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star system to the Sun. Observations suggest that the star has at least six planets:...

, the addressee of A Message From Earth

A Message From Earth

A Message from Earth is a high-powered digital radio signal that was sent on 9 October 2008 towards Gliese 581 c, a large terrestrial extrasolar planet orbiting the red dwarf star Gliese 581. The signal is a digital time capsule containing 501 messages that were selected through a competition on...

 and Hello From Earth

Hello From Earth

HELLO FROM EARTH is an Interstellar Radio Message . It was sent from the 70-meter dish at NASA Deep Space Station 43 , at midday on Friday 28 August 2009...

, is also located in the Libra).