![Pilt](http://i021.radikal.ru/0710/b7/8beb38062cb8.jpg)
![Pilt](http://i034.radikal.ru/0710/05/446d5e2f45f6.jpg)
Spacecraft
Manufacture: Lockheed Martin
Platform: A2100
Minimum lifetime: 15 years
Liftoff mass : 4600 kg
Total power at End of life: 11.3 kW
Payload power: 8.1 kW
No. of transponders: 54 (52 Ku-band and 2 Ka-band)
Frequency Plan
Downlink (GHz) Uplink (GHz)
BSS Nordic and ECEE 11.70 – 12.50 17.30 – 18.10
FSS Nordic and ECEE 12.50 – 12.75 14.00 – 14.25
FSS Africa 12.50 – 12.75 14.00 – 14.25
Ka Interconnect
(Africa to Europe) 19.7 -19.95 or
21.5 – 21.75 14.00 – 14.25
Ka Interconnect
(Europe to Africa) 12.50 – 12.75 29.15 – 29.40
Ka Interactive 18.80 – 19.30 29.50 – 30.00
![Pilt](http://i009.radikal.ru/0710/2e/eb32b596f2fa.jpg)
![Pilt](http://i041.radikal.ru/0710/9f/f12d95dc11b3.jpg)
![Pilt](http://i024.radikal.ru/0710/59/680cde564ff8.jpg)
http://www.ses-sirius.com/satellites/sirius-4/