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MSAT 1



General


Designation 23846 / 96022A
Launch date 20 Apr 1996
Country of origin Canada
Operator TMI Communications
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Ariane V85

This satellite is a twin of AMSC 1. Both satellites were ordered at the same time (with separate contracts). Both operators will provide complementary mobile telephone, radio, data, and positioning service to land, aviation, and maritime users. Each operator also will provide the other with backup and restoration capacity.

Operated by MSV

Lost 2 transponders in 2003, all traffic was transfered on AMSC 1.

Location


Begin End Position
L: 20 Apr 1986    
May 1996 Aug 2007 106.5°W
Aug 2007 Oct 2015 106.5°W, inclined
Oct 2015   107.5°W, inclined


External resources


sat-index articles


Technical data



Specifications


Prime contractor SPAR
Hughes (bus) and SPAR Aerospace (payload)
Platform HS-601
Mass at launch 2830 kg
Mass in orbit 1700 kg
Dimension 2.5 m x 3.5 m x 7.9 m
Solar array 20.96 m span
Stabilization 3-axis
DC power BOL: 4000 W
Design lifetime 12 years

Springback antennas: 6.7 x 4.9 m x 20 kg. For launch the 2 antennas as rolled together into a 4.9 m high cone shape atop the satellite. Made of graphite

L-band (1545-1559/1646.5-1660.5 MHz)


Main transponders 16
Backup transponders
Power 38 W (SSPA)
Bandwidth  
Coverage North America (4 spot beams)
Alaska and Hawaii (1 beam)
Caribbean (1 beam)
EIRP max 57 dBW

Total bandwith: 3200 x 5 KHz

Each beam transponder is equipped with eight surface acoustic wave filters covering the 29 MHz L-band allocation, allowing selection of filters to math traffic needs and to coordinate with other international users. Frequency reuse is incorporated between the North American east and west beams. The beams are combined into two L-band power pools, one covering the east and central beams, and the other covering the remaining service areas. Each power pool is generated by a hybrid matrix amplifier assembly.

In Mar 2004 the FCC granted the use of additional spectrum for 2 years: 1625.5-1645.5 MHz & 1530-1544 MHz.

Ku-band


Main transponders
Backup transponders
Power 100 W (TWTA)
Bandwidth 24 MHz
Coverage CONUS, Caribbean, Canada, Alaska and Hawaii
EIRP max 36 dBW
Polarization linear V
Frequencies 10.760-10.910 GHz

The downlink frenquencies can be mapped to: 10.760, 10.790, 10.820, 10.850, 10.880 or 10.910 GHz.

Beacon: 11.70275 MHz

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