3.2 Microwave Frequency Allocation Satellites in geostationary orbit would use microwave beams for transmission of solar energy to earth. The nature of microwave transmission does not differ basically from other transmission except for density, but the purpose does differ, in one case being telecommunications, in the other, large-scale power transmission. While several frequencies have been considered in connection with the SPS -- because of what appears to be its advantages over other frequencies -- 2.45 GHz has been proposed for possible use. In order to determine the problems which may be encountered in reaching international agreements on microwave power frequency allocation, it appears essential to examine the existing international institutional framework with particular reference to frequency regulation within the radio spectrum. 3.2.1 ITU's Role Because of limitations on the availability of the radio spectrum for beneficial uses, an international organization, the International Telecommunication Union (ITU), has been entrusted with the responsibility of working out rules and procedures with a view toward maximizing the spectrum's efficient utilization and preventing any harmful interference. ITU's recent involvement during the 1977 WARC-BS in the preparation of a plan for allocating geostationary orbital slots and frequencies for broadcast-satellite services has brought to
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