Page:United States Statutes at Large Volume 54 Part 2.djvu/313

 54 STAT.] MULTILATERAL-TELECOMMUNICATION-APR. 8, 1938 cause it must stop transmitting or change waves upon the first re- quest of the land station concerned. [531] §5. Test and adjustment signals must be selected in such a way that there will result no confusion with a signal, an abbreviation, et cetera, having a particular meaning defined by these Regulations or by the International Code of Signals. [532] §6. (1) When it is necessary to transmit test or adjustment signals, and there is danger of interfering with the service of the neighboring land station, permission must be obtained from that land station before such transmissions are made. [533] (2) Any station making transmissions for purposes of testing, adjusting, or experimenting must, so far as possible, at frequent intervals in the course of these transmissions, transmit at low speed its call signal or, if need be, its name. [534] §7. The administration or enterprise which makes a complaint regarding interference must, to support and justify the complaint: [535] (a) Specify the characteristics of the interference noted (fre- quency, variations in adjustment, call signal of the interfering station, if known, and such other pertinent information as may be obtainable regarding the inter- ference); [536] (b) State that the station interfered with actually uses the frequency assigned to it; [537] (c) State that it regularly uses receiving instruments of a type equivalent to the best used in the current practice of the service concerned. [538] §8. The administrations shall take such steps as they deem advisable and as are in keeping with their domestic legislation in order that electrical apparatus capable of serious interference with an authorized radio service will be used in such a manner as to avoid such interference. ARTICLE 23 Emergency Installations [539] §1. The Convention for the Safety of Life at Sea shall deter- tioE'"7 n mine which ships must be provided with an emergency installation* and shall define the conditions to be fulfilled by installations of this category. [540] §2. In the use of emergency installations, all the provisions of the present Regulations must be observed. [541] §3. Ships provided with a type-Al or -A2 transmitting installa- tion in operating condition shall not use the type-B emergency instal- lation to transmit any other than distress signals and traffic. [543] *Convention for the Safety of Life at Sea [article 31 (5)]: "The installa- 508stt. 114. tion shall comprise a main installation and an emergency (reserve) installation. If, however, the main installation complies with all the requirements of an emergency (reserve) installation the latter is not then obligatory." 1533

�