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((Short description|None))
((Refimprove|date=March 2016))
Milestones in the history of [[communications satellite]]s.
((Import style|sticky))
{| class="wikitable"
|- class="is-sticky"
!Satellite
!First
!Launched
!Polity
|-
| [[Sputnik 1]] || First satellite with radio transmitter<ref name="nasah">((cite web|url=https://history.nasa.gov/SP-4217/app-b.htm |title=Appendix B |website=History.nasa.gov |access-date=2016-03-12))</ref> || October 4, 1957 || ((Flag|USSR))
|-
| [[Project SCORE]] || First communications satellite<ref name="nasah" /><br>First test of a space communications relay system<br>First (recorded) voice transmission (U.S. President [[Dwight Eisenhower]])|| December 18, 1958|| ((flag|United States|1912))
|-
| [[TIROS-1]] || First satellite to transmit television images from space (weather) || April 1, 1960|| ((flag|United States|1959))
|-
| [[Echo satellite|Echo 1]] || First passive reflector communications satellite || August 12, 1960|| ((flag|United States))
|-
| [[Courier 1B]] || First active repeater communications satellite<br>First communications satellite powered by solar cells to recharge storage batteries || October 4, 1960 ||((flag|United States))
|-
| [[OSCAR 1]] ||  First [[amateur radio satellite]]<br>First satellite ejected into orbit as a secondary launch payload || December 12, 1961|| ((flag|United States))
|-
| [[Telstar|Telstar 1]] || First active, direct-relay communications satellite<br>First satellite to relay television, telephone and high-speed data communications<br>First transatlantic television<ref name="nasah" /> || July 10, 1962|| ((flag|United States))
|-
| [[Relay 1]] || First transpacific television (news of the [[assassination of John F. Kennedy|assassination]] and [[State funeral of John F. Kennedy|funeral procession of U.S. President John F Kennedy]])<br>First tandem satellite broadcast (with Syncom 3) || December 13, 1962|| ((flag|United States))
|-
| [[Syncom 2]] || First communications satellite in [[geosynchronous orbit]] || July 16, 1963|| ((flag|United States))
|-
| [[Syncom 3]] || First communications satellite in [[geostationary orbit]]<br>First [[1964 Summer Olympics|Olympic]] broadcast to international audiences<br>First tandem satellite broadcast (with Relay 1) || August 19, 1964 || ((flag|United States))
|-
| [[OSCAR 3|OSCAR-III]] || First amateur radio communications satellite (relay/transponder); first OSCAR powered by solar cells || March 9, 1965|| ((flag|United States))
|-
| [[Intelsat I]] || First commercial communications satellite in geosynchronous orbit<ref name="nasah" /> || April 6, 1965|| ((flag|United States))
|-
| [[Orbita (TV system)|Orbita]] || First national TV network based on [[satellite television]] || November 1967 || ((flag|Soviet Union))
|-
| [[Nimbus program|Nimbus 3]] || First satellite-based search and rescue system<br>First satellite to locate and command remote weather stations to transmit data back to satellite || April 14, 1969 || ((flag|United States))
|-
| [[Anik 1]] || First domestic communications satellite system using geosynchronous orbit ([[Canada]]) || November 9, 1972 || ((flag|Canada))
|-
| [[ATS-6]] || First geostationary communications satellite to be [[three-axis stabilized]]<br>First experimental [[Direct Broadcast Satellite]]<br>First satellite to provide communications relay services for other spacecraft ([[Nimbus program|Nimbus 6]]) || May 30, 1974|| ((flag|United States))
|-
| [[Symphonie]] || First geostationary communications satellite with unified propulsion system for station-keeping || December 19, 1974|| ((flag|West Germany))<br>((flag|France))
|-
| [[AMSAT-OSCAR 6|AO-6]] & [[AMSAT-OSCAR 7|AO-7]] || First satellite-to-satellite communications relay  (ground -> AO-7 -> AO-6 -> ground)<ref name="IEEE Xplore">((cite journal
|title=Intersatellite communication using the AMSAT-OSCAR 6 and AMSAT-OSCAR 7 radio amateur satellites
|journal=Proceedings of the IEEE
|volume=63
|issue=10
|pages=1526–1527
|date=October 1975
|publisher=IEEE|doi=10.1109/PROC.1975.9988
|last1=Klein
|first1=P.I.
|last2=Soifer
|first2=R.
|bibcode=1975IEEEP..63.1526K
|s2cid=41507183
))</ref> || January 1975 (occurred)|| ((flag|United States))
|-
| [[Ekran]] || First serial [[Direct-To-Home]] TV communication satellite || October 26, 1976 ||((flag|Soviet Union))
|-
| [[Satellite Business Systems | SBS]]-3 || First commercial use of the U.S. Space Shuttle || November 11, 1982 || ((flag|United States))
|-
| [[Tracking and data relay satellite]]-A || First satellite of first full-time [[Tracking and Data Relay Satellite System|communications relay network]] for other spacecraft || April 4, 1983 || ((flag|United States))
|-
| [[ACTS Gigabit Satellite Network]] || First [[communication satellite]] network to operate in the 20-30 GHz frequency band || September 12, 1993 || ((flag|United States))
|-
| [[Iridium satellite constellation|Iridium 1]] || First satellite for [[satellite telephone]] service || May 5, 1997 ||((flag|United States))
|-
| [[AO-40]] || First satellite to use [[GPS]] for navigation and attitude determination in [[High Earth orbit]]<ref>((cite web
 |url        = https://ntrs.nasa.gov/citations/20020079110
 |title      = Preliminary Results of the GPS Flight Experiment on the High Earth Orbit AMSAT OSCAR-40 Spacecraft
 |date       = February 2002
 |access-date = 20 February 2023
 |publisher  = 25th Annual AAS Guidance and Control Conference))</ref><ref>((cite web
 |url         = http://www.emergentspace.com/pubs/AIAA_GNC_2002_AMSAT_A040.pdf
 |title       = GPS-Based Navigation and Orbit Determination for the AMSAT AO-40 Satellite
 |date        = 2002
 |access-date  = 11 January 2011
 |publisher   = American Institute of Aeronautics and Astronautics
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20110710185947/http://www.emergentspace.com/pubs/AIAA_GNC_2002_AMSAT_A040.pdf
 |archive-date = 10 July 2011
))</ref> || November 16, 2000 || ((flag|Germany))<br>((flag|United States))
|-
| [[Laser communication in space|Artemis]] || First demonstration of inter-satellite laser communication<ref>((cite web|url=http://www.esa.int/Our_Activities/Telecommunications_Integrated_Applications/A_world_first_Data_transmission_between_European_satellites_using_laser_light|title=A world first: data transmission between European satellites using laser light))</ref> || November 21, 2001 (experiment) || ((flag|European Union))
|-
| [[SuitSat]] || First use of a decommissioned spacesuit as a radio satellite || February 3, 2006 (deployed) || ((flag|Russia))<br>((flag|United States))
|-
| [[Bank Rakyat Indonesia|BRIsat]] || First satellite owned and operated by a bank || October 18, 2016 (Launch)|| ((flag|Indonesia))
|-
|}

==See also==
*[[Timeline of first artificial satellites by country]]
*[[First images of Earth from space]]

==References==

((reflist))

((Satcomm|state=uncollapsed))
((Spaceflight lists and timelines))
((Telecommunications))

((DEFAULTSORT:Communications satellite firsts))
[[Category:Communications satellites|*Firsts]]
[[Category:Lists of firsts in space]]
[[Category:History of telecommunications|Satellite firsts]]
[[Category:Technology-related lists]]
[[Category:Lists of satellites]]

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List of communications satellite firsts (edit)
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