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Satellite Instructional TV

NSSDCA ID: 1974-039A-17

Mission Name: ATS 6
Principal Investigator:Mr. John E. Miller


The general objectives of the experiment were (1) to gain experience in the developing, testing, and managing of a satellite-based instructional TV system, particularly in rural areas and to determine optimal system parameters, (2) to demonstrate the potential value of satellite technology in the rapid development of effective mass communications in developing countries, (3) to demonstrate the potential value of satellite broadcast TV in the practical instruction of village inhabitants, and (4) to stimulate national development in India, with important managerial, economic, technological, and social implications. The spacecraft was positioned at approximately 35 deg E longitude. A frequency-modulated TV carrier at 6 GHz was transmitted to the ATS 6 earth-coverage antenna from one of two earth stations: Ahmedabad or Delhi. The signal was processed and retransmitted at both 4 GHz and 860 MHz. The 860-MHz downlink tested the concept of a hybrid system involving both direct reception by low-cost augmented TV receivers as well as higher sensitivity earth stations for rebroadcast at VHF to conventional TV receivers. About 2400 direct reception and 2600 conventional sets were located in 5000 villages. The direct reception terminals were located in clusters of about 400 each in 6 states of India, while the conventional sets were located in villages near existing or planned VHF TV transmissions.

Alternate Names

  • ATS6/SatelliteInstructionalTV

Funding Agency

  • NASA-Office of Space and Terrestrial Applications United States


    Additional Information

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



    NameRoleOriginal AffiliationE-mail
    Mr. John E. MillerPrincipal InvestigatorNASA Goddard Space Flight Center
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