Express-A 1R

Russia

Spacecraft n°:

Russian satellite n°:

Also called: Express 4A

Launch data:

Designation 27441 / 02029A
Launch date 10 Jun 2002 - 01:14 UT
Launch site B, LC-200/39
Launch vehicle  Proton-K/DM-2M (S/N 407-01 / #294)
Mission Commercial: Communication
Geostationary orbit:
Perigee / Apogee 35774 x 35798 km
Eccentricity 2,85E-04
Inclination 0.02 deg
Period 1436.1 min

Built in just 15 months to replace the lost Express A1 satellite with the insurance money.

Spacecraft data:

Prime contractor NPO PM / Alcatel (payload)
Platform  
Operator Russian Satellite Communications Company (Intersputnik)/EUTELSAT
Mass at launch 2600 kg
Mass in orbit  
Dimension  
Solar array  
Stabilization 3-axis
DC power 6000 W (with full eclipse protection)
Design lifetime 10 yrs - still active

Location:

BeginEndPosition
  02 Sep 2005 40°E
 July 2010 - 13.97°E

Telemetry, tracking and control are handled by Vladimir MS Satellite Operations Center, Russia. Monitoring and day-to-day operations are handled by Vladimir MS (Express-A1) and Dubna MS (Express-A2), Russia

Antenna specifications:

Antenna Frequency band Function Coverage Beam width Steerability (degrees)
          North/South West/East
A2 C  transmit spot 5°x5° 8.0/4.0 8.0/4.0
A3 C  transmit quasi global 15°x15° none none
A4 C  transmit zone 5°x11° 8.0/8.0 8.0/8.0
A6 C  transmit zone 5°x11° 8.0/8.0 8.0/8.0
A7 C  receive global 17x17° none none
A8 C  receive zone 5°x11° 8.0/8.0 8.0/8.0
A9 Ku receive and transmit zone 3.5°x7° 7.3/0 4.0/4.0

C-band:

Main transponders 12
Backup transponders  
Power 20, 40 and 75 W
Bandwidth 11 x 36 MHz
1 x 40 MHz
Coverage global, zone and spot
EIRP max 48 dBW
G/T max 02 dB/K
Polarization circular
Frequencies uplink: 5.925-6.525 GHz
downlink: 3.600-4.200 GHz
Beacon 3.800 GHz

Ku-band:

Main transponders 5 
Backup transponders 1 
Power 35 W
Bandwidth 36 MHz
Coverage zone
EIRP max 43.5 dBW
G/T max 5.3 dB/K
Polarization linear
Frequencies uplink: 14.250-14.500 GHz
downlink: 11.450-11.700 GHz
Beacon 11.400 GHz

Should have an additional L-band payload for mobile communications.
10 C-band transponders; data transmission, TV and radio broadcasting; communications, Internet, video-conference, others; digital format to Russia and neighboring countries.
Ref.: #3(SD399), #7, #15, #226 - update: 02.11.10 Home