Intelsat Americas 5

Galaxy 25
Mission type Communications
Operator Loral Skynet (1997-2003)
Intelsat (2003—)
COSPAR ID 1997-026A
SATCAT № 24812
Mission duration 12 years
Spacecraft properties
Bus LS-1300
Manufacturer Space Systems/Loral
Launch mass 3,600 kilograms (7,900 lb)
Start of mission
Launch date 24 May 1997, 17:00:00 (1997-05-24T17Z) UTC
Rocket Proton-M/DM4
Launch site Baikonur 81/23
Contractor International Launch Services
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 97° west (1997-2008)
93° west (1997—)
Transponders
Band 24 C-band
28 Ku-band

Galaxy 25 (G-25) launched in 1997 (formerly known as Intelsat Americas 5 (IA-5) until February 15, 2007 when it was renamed as result of the merger between owner Intelsat and PanAmSat or Telstar 5) is a medium-powered communications satellite formerly in a geostationary orbit at , above a point in the Pacific Ocean several hundred miles west of the Galapagos Islands. It was manufactured by Space Systems/Loral, part of its FS-1300 line, and is currently owned and operated by Intelsat. The satellite's main C-band transponder cluster covers the United States, southern Canada, and Mexico; its main Ku band transponder cluster covers the U.S., Mexico, and the northern Caribbean Sea. An additional C-band and a Ku band transponder pair targets the Hawaiian Islands.

Galaxy 25 has a projected life of 12 years. It was replaced by Galaxy 19 (formerly IA-9) in late 2008.[1] When it was last in service at 97 degrees west, Galaxy 25 transmitted both free-to-air (FTA) direct-to-home (DTH) broadcasting and encrypted subscription channels / services. The replacement satellite, Galaxy 19 was successfully launched on September 24, 2008.[2] Galaxy 25 has been moved to a different orbital position at where it is currently broadcasting several services on its Ku band transponders.

Technical details

Key Parameters
Total Transponders C-Band: 24x36 MHz
Ku-Band: 4x54 MHz, 24x27 MHz
Polarization C-Band: Linear - Horizontal or Vertical
Ku-Band: Linear - Horizontal or Vertical
e.i.r.p. (C-Band)
  • CONUS: 38.8 dBW
  • Alaska: 33.7 dBW
  • Caribbean: 34.3 dBW
  • Hawaii: 33.8 dBW
  • Mexico: 33.8 dBW
  • Puerto Rico / U.S. Virgin Islands: 34.0 dBW
  • Southern Canada: 37.0 dBW
e.i.r.p. (Ku-Band)
  • CONUS: 48.3 dBW
  • Alaska: 40.9 dBW
  • Caribbean: 43.4 dBW
  • Hawaii: 46.4 dBW
  • Mexico: 43.6 dBW
  • Puerto Rico / U.S. Virgin Islands: 44.9 dBW
  • Southern Canada: 44.3 dBW
Uplink Frequency C-Band: 5925 to 6425 MHz
Ku-Band: 14.00 to 14.50 GHz
Downlink Frequency C-Band 3700 to 4200 MHz
Ku-Band: 11.7 to 12.2 GHz
G/T (C-Band)
  • CONUS: -0.7 dB/K
  • Alaska: -8.2 dB/K
  • Caribbean: -4.7 dB/K
  • Hawaii: -5.2 dB/K
  • Mexico: -5.4 dB/K
  • Puerto Rico / U.S. Virgin Islands: -4.6 dB/K
  • Southern Canada: -2.3 dB/K
G/T (Ku-Band)
  • CONUS: +0.7 dB/K
  • Alaska: -3.3 dB/K
  • Caribbean: -3.2 dB/K
  • Hawaii: +0.6 dB/K
  • Mexico: -4.2 dB/K
  • Puerto Rico / U.S. Virgin Islands: +0.7 dB/K
  • Southern Canada: -1.6 dB/K
SFD Range (Beam Edge) C-Band: -92.0 to -71.0 dBW/m2
Ku-Band: -96.0 to -75.0 dBW/m2

Platform operators

The Ku-Band side of the satellite carried the platforms of Pittsburgh International Telecommunications, Inc (PIT), Globecast, RRSat, and ABS-CBN, with free-to-air and encrypted television and radio programming in a variety of languages:

See also

References

  1. ^ http://www.intelsat.com/network/satellite/scheduled-launch.asp Intelsat launch information
  2. ^ http://news.yahoo.com/s/ap/20080924/ap_on_re_us/rocket_launches Two Rockets Launched

External links

  • RRsat website
  • Intelsat website
  • Pittsburgh International Telecommunications Information
  • Channels carried on Galaxy 25 (Lyngsat)
  • Globecast website
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.