|
gptkbp:instance_of
|
gptkb:satellite
|
|
gptkbp:application
|
gptkb:Telecommunications
|
|
gptkbp:communication
|
voice and data services
|
|
gptkbp:coverage
|
Canada and the United States
|
|
gptkbp:data_usage
|
up to 155 Mbps
|
|
gptkbp:debut
|
gptkb:1997
|
|
gptkbp:design
|
15 years
|
|
gptkbp:end_of_life
|
gptkb:2012
|
|
gptkbp:frequency
|
C-band
3.625-4.200 GHz
5.850-6.425 GHz
4-6 GHz
|
|
gptkbp:home_ground
|
Telesat ground stations
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Telstar 21
|
|
gptkbp:launch_date
|
1997-12-20
|
|
gptkbp:launch_mass
|
4,000 kg
|
|
gptkbp:launch_site
|
gptkb:Centre_Spatial_Guyanais
|
|
gptkbp:launch_vehicle
|
gptkb:Ariane_4
|
|
gptkbp:launched
|
gptkb:Telesat_Canada
|
|
gptkbp:manufacturer
|
gptkb:Lockheed_Martin
|
|
gptkbp:mission_duration
|
15 years
|
|
gptkbp:modulation
|
QPSK
|
|
gptkbp:orbit_type
|
gptkb:geostationary_orbit
gptkb:satellite
successful launch
A2100
commercial satellite
high capacity transponders
decommissioned in 2012
pioneering satellite technology
Lockheed Martin design
Telesat network
part of Telstar series
|
|
gptkbp:orbital_altitude
|
63 degrees West
|
|
gptkbp:payload_capacity
|
communications payload
|
|
gptkbp:powers
|
approximately 10 k W
|
|
gptkbp:production_location
|
gptkb:United_States
|
|
gptkbp:reliability
|
high
|
|
gptkbp:replaced_by
|
Telstar 19 Vantage
|
|
gptkbp:series
|
Telstar series of satellites
|
|
gptkbp:service
|
gptkb:1998
gptkb:2012
|
|
gptkbp:service_area
|
gptkb:North_America
|
|
gptkbp:services
|
broadband services
|
|
gptkbp:services_provided
|
gptkb:Telesat_Canada
|
|
gptkbp:status
|
operational
|
|
gptkbp:transmission
|
digital transmission
|
|
gptkbp:transponders
|
24 C-band transponders
|
|
gptkbp:type
|
geostationary satellite
|
|
gptkbp:weight
|
approximately 4,000 kg
|
|
gptkbp:bfsParent
|
gptkb:Telesat
|
|
gptkbp:bfsLayer
|
6
|