Page:United States Statutes at Large Volume 49 Part 2.djvu/461

TELECOMMUXICATIOX CONVENTIOX. DECEMBER 9, 1932. (123) § 20. In Europe, Mrica, and Asia, low-power directional radio- beacons the range of which does not exceed about 50 km may use any frequency in the band 1,500 to 3,500 kc (200 to 85.71 m) except the guard band of 1,630 to 1,670 kc (184 to 180 m) subject to agree- ments with the countries whose services are likely to be interfered with. ARTICLE 8 Amateur Stations and Private Experimental Stations 2477 A mateur and private (124] § 1. The exchange of communications between amateur stations experimental stations. and. between private experimental stations of different countries shall be forbidden if the administration of one of the interested countries has given notice of its opposition to this exchange. [,26J § 2. (1) When this exchange is permitted, the communications must be carried on in plain language and be limited to messages re- lating to experiments and to remarks of a private nature for which, by reason of their lack of importance, the use of the telegraph service could not enter into consideration. It shall be strictly forbidden for owners of amateur stations to transmit international communications emanating from third persons. (126] (2) The foregoing provisions may be modified by special arrangements between the interested countries. [127] § 3. In amateur stations or in private experimental stations, authorized to conduct transmissions, any person operating the appa- ratus on his own account or for third persons must have proved that he is able to transmit texts in ~1orse code signals and to read, by aural radiotelegraph reception, texts so transmitted. He can be repbced only by authorized persons possessing the same qualifications. (128J § 4. Administrations shall take such measures as they judge necessary to verify, from a technical standpoint, the qualifications of any person operating the apparatus. [129] § 5. (1) The maximum power which amateur stations and pri- vate experimental stations may use shall be fixed by the interested administrations, taking account of the technical qualifications of the operators and of the conditions under which the said stations must work. [I 30] (2) All the general rules laid down in the Convention and in the present Regulations shall apply to amateur stations and to private experimental stations. In particular, the frequency of the wave emitted must be as constant and as free from harmonics as the state of the art permits. [,31] (3) In the course of their emissions, these stations must, at short intervals, transmit their call signals or, in the case of experi- mental stations not yet provided with call signals, their names.