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 0°N 97°W / 0°N 97°W / 0; -97, 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 0°00′N 93°06′W / 0°N 93.1°W / 0; -93.1 where it is currently broadcasting several services on its Ku band transponders.
Technical details [edit]
| 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[citation needed]
- 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[citation needed] |
|
Ku-Band: |
-96.0 to -75.0 dBW/m2 |
Platform operators [edit]
The Ku-Band side of the satellite carried the platforms of Pittsburgh International Telecommunications, Inc (PIT), GlobeCast World TV, RRSat, and ABS-CBN, with free-to-air and encrypted television and radio programming in a variety of languages:
See also [edit]
References [edit]
- ^ http://www.intelsat.com/network/satellite/scheduled-launch.asp Intelsat launch information
- ^ http://news.yahoo.com/s/ap/20080924/ap_on_re_us/rocket_launches Two Rockets Launched
Previously-Available programming languages [edit]
External links [edit]
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Intelsat I–III
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Intelsat IV
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Intelsat V
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Intelsat VI
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Intelsat 7-10
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Intelsat
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Galaxy
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Other
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Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.
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