changes in frequency bands) or other technical or operational character- istics. Pursuant to paragraph (c), if the foregoing procedures failed to resolve difficulties among potential users, the concerned States were to "together make every possible effort to resolve these difficulties by means of mutually acceptable adjustments, for example, to geostationary space station locations and to other characteristics of the systems involved in order to provide for the normal operation of both the planned , and existing systems. The 1971 WARC ST in Resolution No. Spa2-1, however, did accept the view that the registration with the IFRB of a national assignment of a radio frequency would not establish any permanent priority for the registrant over a particular frequency. The resolution, entitled "Relating to the Use by all Countries, with Equal Rights, of Frequency Bands for Space Radiocommunication Services," linked the subjects of radio frequencies with satellite orbital slots. In the preambulatory provisions of the Resolution it was noted that "all countries have equal rights in the use of both the radio frequencies allocated to various space radiocommunication services and the geostationary satellite orbit for these services." The preamble also referred to the view that "the use of the allocated frequency bands and fixed positions in the geostationary satellite orbit by individual countries or groups of countries can start at various dates depending on requirements and readiness of technical facilities of countries." 23 UST 1527, 1686, TIAS 7435. ,,.. Ibid. 23 UST 1527, 1820, TIAS 7435.
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