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Galaxy 7


Designation 22205 / 92072A
Launch date 28 Oct 1992
Country of origin United States
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Ariane V54


Begin End Position
L: 28 Oct 19992 Oct 2000 91°W
Nov 2000 Nov 2000 125°W

End of life

Out of service 22 Nov 2000
Cause The second control processor failed and the satellite was lost. The primary control processor failed in June 1998. Panamsat should fill a $142 million claim for insurance.

Problems with SCPs in 601 satellites are electrical shorts caused by internal tin-plated relay latching switches that act as on/off switches within the processors. Investigators have found that under certain conditions, a tiny, crystalline structure, less than the width of a human hair, can grow and bridge a relay terminal to its case, causing an electrical short.

External resources

sat-index articles

Technical data

C-band transponder frequency chart
Ku-band transponder frequency chart

EIRP coverage (dBW)

C-band Horizontal
C-band Vertical
Ku-band Horizontal
Ku-band Vertical

The spacecraft was launched using the PVA (Perigee Velocity Augmentation) technic. The transfert orbit was 200/27975 km and then the apogee was upped to 35975 km with the satellite's kick motor and then gradually circularized.

Vertically polarized transponders are theoretically the only transponders that can be made into half transponders. Cross-strapping: C-band transponders 18 and 24 can cross-strap to Ku-band transponders 17 and 23.

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