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Viasat 1

Also called Viasat Ka1


Designation 37843 / 11059A
Launch date 19 Oct 2011
Country of origin United States
Mission United States
Geostationary orbit 115.1°W
Launch vehicle Proton #380

Tested at 109.2°W. Started service in Feb 2012.
Uses an orbital slot and some frequencies from IOMSAT-11A

Change of launcher from Ariane to Proton is said to save $20 million (Proton cost is approx. $80 million). Damaged during tests in early 2011. Launched delayed a few months for repairs.

Capacity estimated at 140 Gbps, the highest througput at the time.

sat-index articles

Technical data

Lyngsat transponder loading


Prime contractor SS/L
Platform FS-1300
Mass at launch 6700 kg
Dry mass  
Solar array  
Stabilization 3-axis
DC power  
Design lifetime 15 years


Main transponders  
Backup transponders  
Coverage North America: 72 spot beams (63 for US, 9 for Canada)
EIRP max  
Polarization circular cross-pol
Frequencies Uplink: 28.35-28.6 & 29.5-30 GHz + 28.1-28.35 GHz
Downlink: 18.3-18.8 & 19.7-20.2 GHz + 18.8-19.3 GHz

The Canadian payload was purchased by Telesat in 2011.

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