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Space-Based Broadcasting The Future of Worldwide Audio Broadcasting (1985) / Chapter Skim
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Section 1: General Service and Systems Considerations
Pages 11-16

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From page 11...
... A few analytical studies of space-based direct audio broadcasting possibilities were conducted in the 1960's and 1970's, and, the United States and other nations have pursued the use of nations satellites to provide video broadcasting direct to individual surface receivers. Yet DBS-TV has not been realized.
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From page 12...
... Many -- quite possibly all -- of the wor1d's governments expect that planning the use of space broadcasting will mirror the International Telecommunications Union Convention planning agreement that states: "...the planning of...bands allocated to the broadcasting service shall be based on the principle of equal rights of all countries, large or small, to equitable access to these bands...."0 also Widespread international support for a space-based system-service would 1. Involve a large number of active broadcasters, increasing the likelihood of spreading the costs more efficiently over a large number of system users and substantially reducing the unit cost to each.
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From page 13...
... 5. The system should place no more demand upon the listening audiences than what is expected of listeners to today's local over-the-air AM and FM audio broadcasting stations, including ease of moving receivers about; locating, pointing, or adjusting antennas; using house electrical current or batteries; and tuning from one station to another.
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From page 14...
... Large space-segment costs and financing must be addressed, and perhaps an installation staging process may need to be p ~ anned. Finally, the prospect of space-based broadcasting -- and the accompanying financial costs -- offers innovative engineering concepts to meet development challenges within the constraints created by the financial means of many of the system's potential users, both broadcasters and listeners.
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From page 15...
... Excluded are the areas within the Arctic and Antarctic circles; the ocean, heavy jungle, extreme desert, and extremely high altitude regions; and particularly difficult terrains where mountains would shield a receiver from direct and diffracted field strengths radiated from space. The remaining 15 percent of the Earth's surface area of 200 million square miles (3Q million square miles or 80 million square kilometers)
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From page 16...
... overall, hour-to-hour reliability should be maintained throughout the year. All factors that could cause signal degradation below the minimum acceptable service standards should be considered: the entire broadcasting plant, the receivers in normal condition and sensible operating use, and all signal transmi ssi on vagari es.
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Key Terms

  • broadcasting service
  • million square
  • unit price
  • direct audio
  • antarctic circles

  • acceptable service
  • radiowave spectrum
  • broadcasting channel
  • telecommunications union
  • bands allocated

  • foreign relations
  • broadcasting plant
  • international telecommunications
  • international audio
  • lowest reasonable

  • square miles
  • space broadcasting
  • service standards
  • antenna directivity
  • including ease

  • agreements require
  • quality requirements
  • receiver vices
  • digital modulation
  • signal transmi

  • studies looked
  • communications technology
  • reception standards
  • convention planning
  • receives television


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