Sharing the UHF between Space and Terrestrial Services.

by John L. Hult


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Report prepared for the Proceedings of the National Electronics Conference, Chicago, December 7-9, 1970. The demand for spectrum at UHF has exceeded the supply for exclusive use of the contending services. Satellite relays offer great promise for area coverage services to small terminals that will involve more direct users and greater investment than all other services combined. The UHF is the choice portion of the spectrum for these services from the standpoints of both the satellite relay performance and the total system costs. In addition, UHF, with its complete sharing reuse for the new highest-quality space services, can provide double duty without hindering the current terrestrial services or limiting their future development. The most difficult case of sharing between the two types of TV broadcast service was examined in detail; the study showed that sharing will be feasible with adequate margins using earth terminals with small receiving antennas. 8 pp. Ref.

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