View source for AMC-4

{{for|the ship designated AMc-4|USS Goshawk (AM-79)}}
{{Use American English|date=April 2021}}
{{Use dmy dates|date=April 2021}}
{{Infobox spaceflight
| name               = AMC-4
| names_list         = GE-4 (1999-2001)<br/>AMC-4 (2001-present)
| image              = 
| image_caption      = 
| image_size         = 300px
| mission_type       = [[Communications satellite|Communications]]<ref name="nssdc">{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1999-060A|title=Display: GE 4 1999-060A
|publisher=NASA|date=10 February 2021|access-date=2 April 2021}} {{PD-notice}}</ref>
| operator           = [[GE Americom]] (1999-2001)<br/>[[SES Americom]] (2001-2009)<br/>[[SES World Skies]] (2009-2011)<br/>[[SES (company)|SES]] (2011-present)
| COSPAR_ID          = 1999-060A
| SATCAT             = 25954
| website            = [http://www.ses.com/4628362/amc-4 SES-AMERICOM AMC-4]
| mission_duration   = 15 years (planned) <ref name="Gunter"/><ref name="ses-amc4">{{cite web|url=https://www.ses.com/4628362/amc-4|title=AMC-4|publisher=SES|access-date=2 April 2021}}</ref><br/>{{time interval|13 November 1999|show=ymd|sep=,}} (elapsed)
| spacecraft         = GE-4
| spacecraft_type    = [[Lockheed Martin A2100]]
| spacecraft_bus     = [[Lockheed Martin A2100|LM A2100AX]]
| manufacturer       = [[Lockheed Martin Space Systems|Lockheed Martin]]
| launch_mass        = {{cvt|3895|kg}} <ref name="Gunter"/>
| dry_mass           = 
| dimensions         = 
| power              = <!-- [[watt]]s -->
| launch_date        = 13 November 1999, 22:54 [[Coordinated Universal Time|UTC]]
| launch_rocket      = [[Ariane 4|Ariane 44LP H10-3]] (V123) <ref name="Gunter">{{cite web|url=https://space.skyrocket.de/doc_sdat/ge-4.htm|title=GE 4, 6 / AMC 4, 6 / Rainbow 2|publisher=Gunter's Space Page |first=Gunter|last=Krebs|date=12 April 2019|access-date=2 April 2021}}</ref>
| launch_site        = [[Guiana Space Centre|Centre Spatial Guyanais]], [[ELA-2]]<ref name="nssdc"/><ref name="Gunter"/>
| launch_contractor  = [[Arianespace]]
| entered_service    = 2000
| disposal_type      = 
| deactivated        = 
| last_contact       = 
| orbit_reference    = [[Geocentric orbit]]
| orbit_regime       = [[Geostationary orbit]]
| orbit_longitude    = 134.9° West <ref name="ses-amc4"/>
| apsis              = gee
| trans_band         = 52 [[Transponder (satellite communications)|transponders]]:<br/>24 [[C band (IEEE)|C-band]]<br/>28 [[Ku band|Ku-band]]<ref name="ses-amc4"/>
| trans_frequency    = 36 [[Hertz|MHz]]<br/>72 MHz (4 Ku-band)
| trans_bandwidth    = 
| trans_capacity     = 
| trans_coverage     = [[North America]], [[Latin America]], [[Caribbean]]<ref name="ses-amc4"/>
| programme          = [[SES Americom|SES constellation]]
| previous_mission   = [[AMC-3]]
| next_mission       = [[AMC-5]]
}}

'''AMC-4''' (formerly '''[[General Electric|GE-4]]''') is a commercial broadcast [[communications satellite]] owned by [[SES World Skies]], part of [[SES (company)|SES]] (and formerly [[GE Americom]], then [[SES Americom]]). Launched in 1999, from [[Guiana Space Centre|Centre Spatial Guyanais]], [[ELA-2]] by [[Ariane 4|Ariane 44LP H10-3]]. It provides coverage to [[North America]], [[Latin America]], [[Caribbean]]. Located in a [[geostationary orbit]], AMC-4 provides service to commercial and government customers, with programming distribution, [[electronic news-gathering|satellite news gathering]] and broadcast internet capabilities.<ref name="ses-amc4"/>

AMC-4 was launched on 13 November 1999 at 22:54 [[Coordinated Universal Time|UTC]] as GE-4, GE Americom's fourth [[Lockheed Martin A2100|A2100]] hybrid [[C band (IEEE)|C-band]] and [[Ku band|Ku-band]] satellite. The C-band payload was home to national [[Television broadcasting|television networks]] broadcasting to thousands of [[cable television headend]]s. AMC-4's Ku-band [[Transponder (Satellite communications)|transponders]] served the [[Satellite television|''direct-to-home'']] (DTH), [[Very-small-aperture terminal|VSAT]], business television and [[Internet access|broadband Internet]] market segments. These Ku-band transponders are designed to be switchable between North and South American coverages.<ref name="ses-amc4"/> It was renamed AMC-4 after GE Americom was bought by [[SES (company)|SES]] and re-branded [[SES Americom]]. In 2009, SES Americom merged with SES New Skies to form [[SES World Skies]]. AMC-4 has been replaced by [[SES-1]] in 2010. AMC-4 has been moved to 134.9° West, and currently has no [[free-to-air|FTA]] signals.

== Transponder data ==
{| class="wikitable"
! Transponders
! C-band
! Ku-band
|-
! Number of transponders and frequency
| 24 x 36 [[MHz]]
| 24 x 36&nbsp;MHz; 4 x 72&nbsp;MHz
|-
! Amp type
| [[Amplifier|SSPA]], 20 [[watt]]s
| [[TWTA]], 110 watts
|-
! Amp redundancy:
| 16 for 12
| 18 for 14
|-
! Receiver redundancy:
| 4 for 2
| 4 for 2
|-
! Coverage:
| colspan=2| North America, Latin America, Caribbean
|-
! Beacon:
| 3700.5&nbsp;MHz ([[Polarization (waves)|V]]), 4199.5&nbsp;MHz ([[Polarization (waves)|H]])
| 11702&nbsp;MHz (H), 12198&nbsp;MHz (V)
|-
| colspan=3 align="center"| [https://web.archive.org/web/20131029204027/http://www.ses.com/4628362/amc-4.pdf Typical Footprint]{{,}} [https://web.archive.org/web/20131029204027/http://www.ses.com/4628362/amc-4.pdf Frequency Plan]
|}

== See also ==
{{Portal|Spaceflight}}
* [[North American Aerospace Defense Command|NORAD]]

== References ==
{{Reflist|30em}}

{{SES World Skies}}
{{Orbital launches in 1999}}

[[Category:Communications satellites in geostationary orbit]]
[[Category:Spacecraft launched in 1999]]
[[Category:SES satellites]]
[[Category:Satellites using the A2100 bus|AMC-04]]


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