Communications in the Soviet Union

.su is an Internet country code top-level domain (ccTLD) that was designated for the Soviet Union on 19 September 1990. Even though the Soviet Union itself was dissolved 15 months later, the .su top-level domain remains in use to the present day. It is administered by the Russian Institute for Public Networks (RIPN, or RosNIIROS in Russian transcription).

system that allows direct communication between the leaders of the United States and Russia

The Intersputnik International Organization of Space Communications, commonly known as Intersputnik, is an international satellite communications services organization founded on 15 November 1971, in Moscow by the Soviet Union along with a group of seven formerly socialist states (Poland, Czechoslovakia, East Germany, Hungary, Romania, Bulgaria, Mongolia) and Cuba.

national holiday in Russia on 7 May

OGAS (, "National Automated System for Computation and Information Processing") was a Soviet project to create a nationwide information network. The project began in 1962 but was denied necessary funding in 1970. It was one of a series of socialist attempts to create a nationwide cybernetic network.

Tsikada ( meaning cicada) was a Soviet satellite navigation system including ten Low Earth Orbit (LEO) satellites. It transmitted the same two carrier frequencies as the U.S. TRANSIT satellite system. The first satellite was launched in 1974.

Russian system for long range radio navigation

satellite constellation

thumb|Chayka pulse

In cryptography, Fialka (M-125) is the name of a Cold War-era Soviet cipher machine. A rotor machine, the device uses 10 rotors, each with 30 contacts along with mechanical pins to control stepping. It also makes use of a punched card mechanism. Fialka means "violet" in Russian. Information regarding the machine was quite scarce until c. 2005 because the device had been kept secret.

Russian radio transmitter in Belarus

SOUD, standing for System of Joint Acquisition of Enemy Data was a computerized intelligence exchange system where information acquired by the intelligence and security agencies from participating Warsaw Pact countries was stored. thumb|The application form for the SOUD system The intelligence exchange organization was founded in 1977, and its initial goal was to safeguard the USSR from 'foreign threats' during the 1980 Olympics in Moscow. Stasi engineers conceived the system using stolen Western technology, and it was operational in 1979. Its main computer was based in Moscow, the input lang

Russian college of FSB Academy

Soviet mobile phone system

VLF transmitter of the German Navy

former communications agency of the Soviet Union