Page:United States Statutes at Large Volume 63 Part 2.djvu/155

 63 STAT.] MULTILATERAL-TELECOMMUNICATIONS-OCT. 2, 1947 ciate Members in general. Such arrangements, however, shall not be in conflict with the terms of this Convention or of the Regulations annexed thereto, so far as concerns the harmful interference which their operation might be likely to cause to the radio services of other countries. Article 41 Regional Conferences, Agreements and Organizations Members and Associate Members reserve the right to convene re- gional conferences, to conclude regional agreements and to form regional organizations, for the purpose of settling telecommunication questions which are susceptible of being treated on a regional basis. However, such agreements must not be in conflict with this Convention. CHAPTER V Special Provisions for Radio Article 42 Rational use of frequencies and spectrum space Members and Associate Members recognize that it is desirable to limit the number of frequencies and the spectrum space used to the minimum essential to provide in a satisfactory manner the neces- sary services. Article 43 Intercommunication 1. Stations performing radiocommunication in the mobile service shall be bound, within the limits of their normal employment, to exchange radiocommunications reciprocally without distinction as to the radio system adopted by them. 2. Nevertheless, in order not to impede scientific progress, the provisions of the preceding paragraph shall not prevent the use of a radio system incapable of communicating with other systems, pro- vided that such incapacity is due to the specific nature of such system and is not the result of devices adopted solely with the object of pre- venting intercommunication. 3. Notwithstanding the provisions of paragraph 1, a station may be assigned to a restricted international service of telecommunication, determined by the purpose of such telecommunication, or by other circumstances independent of the system used. Article 44 Harmful Interference 1. All stations, whatever their purpose, must be established and operated in such a manner as not to result in harmful interference to 1449

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