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The History of satellite communications development

Express

Satellite performances

MissionData transmission, TV & radio-broadcasting, communications, Internet, video-conference, and others
Orbitgeostationary
Station Keeping Accurac±0,2° (E&W)
Life-time5 years
StabilisationThree-axis
Electric power1500 W
Mass2500±25 kg
Solar battery capacity3200 W
Antennas
- fixed1 receiving antenna 17°x17°, global 1 receiving antenna 5°x11°, zone 1 transmitting antenna 5°x11°, zone 1 transmitting antenna 15°x15°, quasi-global 1 transmitting antenna 5°x11°, zone
- steerable1 transmitting antenna 5°x5°, zone 1 transmitting antenna 5°x11°, zone

Transponders

ParametersC-band
Number of transponders10
Transponders bandwidth at –1dB, MHz34
Operating frequencies (uplink/downlink), MHz№6 - 6000/3675 №7 - 6050/3725 №8 - 6100/3775 №9 - 6150/3825 №10 - 6200/3875 №11 - 6250/3925 №14 - 6300/3975 №15 - 6350/4025 №16 - 6400/4075 №17 - 6450/4125
Transponder output power, W10,5 (9 transponders) 65 (1 transponder)
Radiation polarisationCircular
transmissionRight-hand
receptionLeft-hand
EIRP at beam centre, dBW28,6-47,5
G/T at beam centre, dBW-2,8 (5 transponders) -11,5 (3 transponders)
Saturation flux density (SFD), dBW/m272…-90

Footprints