NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header




The Tracking and Data Relay Satellite System (TDRSS) was a concept utilizing communication satellite technology to improve and economize the satellite tracking and telemetry operation. Three geosynchronous satellites (one a standby) will track and receive data from satellites for relay to a ground station. The two active satellites will be separated in orbit by at least 130-deg longitude. Spacecraft serviced by TDRSS will require only one communications system since ground-based telemetry stations will be compatible with TDRSS equipment. TDRSS was intended to support satellite with apogee below 12,000 km. One system will be used for satellites with apogee below 2000 km (the great majority of satellites), and another for those with higher apogee. Use of operating frequencies near 2150 (plus or minus 150) MHz and near 14.3 (plus or minus 0.9) GHz were anticipated.

Alternate Names

  • 13969
  • TDRS 1
  • Tracking and Data Relay Satellite 1

Facts in Brief

Launch Date: 1983-04-05
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 2268 kg
Nominal Power: 1700 W

Funding Agency

  • NASA-Office of Tracking and Data Acquisition (United States)


  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mr. George Q. ClarkProject ManagerNASA Goddard Space Flight Center

Related Information/Data at NSSDCA


Other Sources of TDRS Information/Data

TDRS program

[] NASA Logo -