Express-A Specifications

SPACECRAFT
Model	Express-6A	Express-3А
Geostationary Orbital Position	80^o East	11^o West
Launch Date	March 2000	June 2000
Prime Contractor	NPO PM (Russia) / Alcatel Espace (France)
Functions	Fixed Satellite Services
Stabilization	3 axes
Station Keeping Accuracy	±0.2 E-W and N-S
Lifetime	10 years
Satellite Mass In Orbit	2 600 kg
Power Supply	2 540 W
Launch Vehicle	Proton DM-01 from Baikonur launch site
Full Eclipse Protection	yes
Control and monitoring	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-6A) and Dubna MS (Express-3A), Russia

COMMUNICATIONS PAYLOAD
Parameter	C-band	Ku-band
Number of Transponders / Bandwidth	12(11 @ 36 MHz; 1 @ 40 MHz)	5 @ 36 MHz
Transponder Switching Capability	yes	none
Operating Frequencies (Uplink / Downlink)	5925-6525 / 3600-4200 MHz	14250-14500 / 11450-11700 MHz
Uplink/Downlink Signal Polarization	LHCP/RHCP	linear: horizontal and vertical
Transmit Antenna Patterns	5° x 5° ; 5° x 11° ; 15° x 15° ;	3.5° x 7°
TWTA size	20 W; 40W; 75W	35 W
TWTA Redundancy	2 for 1; 3 for 2; 9 for 7	6 for 5
Receiver Redundancy	3 for 2	2 for 1
EIRP Inside Service Area from 30 to 48 dBW	from 30 to 48 dBW	43.5 dBW
G/T Inside Service Area	from -8.5 to 0.2 dB/K	5.3 dB/K
Uplink FTS	-88 ±5	-95.5 ±6