Page:United States Statutes at Large Volume 38 Part 2.djvu/501

 1718 RADIOTELEGRAPHIC CONVENTION. JULY 5, 1912. “°°"*°°'°¢“’***¤* SERVICE REGULATIONS AFFIXED T0 THE INTERNATIONAL BADIOTELEGRAPH CONVENTION, LONDON. 1912. [Translation.] °'¥“*“““"· 1. ORGANIZATION OF RADIO STATIONS. Amman I. ?m’“”‘“" The choice of radio apparatus and devices to be used by the coastal stations and stations on shipboard shall be unrestricted. The installation of such stations shall as far as possible keep pace with scientific and technical progress. Anmcnm II. w"°“’°‘"“ Two wave lengths, one of 600 meters and the other of 300 meters, °""°‘"°°°l°"‘ are authorized or general public service. Every coastal station opened to such service shall be equipped in such manner as to be a le to use these two wave lengths, one of which shall be designated as the normal wave length of the station. During the whole time that a coastal station is iolpon it shall be in condition to receive calls according to its norm wave length. For the correspondence specified under paragraph 2 of Article XXXV, however, a wave 1m:n¤a¤¤r¤r¤¤ci¤ length of 1,800 meters shall be used. In addition, each Government In may authorize in coastal stations the employment of other wave lengths designed to insure long-r service or any service other than for general public correspoxlliiice established in conformity with the provisions of the Convention under the reservation that such wave lengths do not exceed 600 meters or that they do exceed 1,600 meters. In particular, stations used exclusively for sending signals designed to determine the position of ships shall not cmp oy wave lengths exceeding 150 meters. Anrronn III. °‘"’l’°"°'*‘“°“ 1. Everi station on shipboard shall be equipped in such manner as to be a le to use wave lengths of 600 meters and of 300 meters. The first shall be the normal wave length and msg not be exceeded for transmission except in the case referred to un er Article XXXV (paragraph 2). Other wave lengths, less than 600 meters, may be used in s °al cases and under the approval of the managements to whicholtlho coastal and shipboard stations concerned are subject. 2. During the whole time that a station on shipboard is open it shall be ab e to receive calls according to its normal wave length. B"'] '°’”“‘ 3. Vessels of small tonnage which are unable to use a wave ength of 600 meters for transmission, may be authorized to employ exc u· sively the wave length of 300; they must be able to receive a wave length of 600 meters. Anrrcan IV.
 * w(·i°$i¤°m£i°°°¤*§if Communication between a coastal station and a station on ship-

“*Pb°*¤* “°“°°* board shall be exchanged on the part of both by means of the same wavelength. If, m a particular case, communication is diilicult, the two stations may, by mutual consent, pass from the wave length with which they are communicating to the other regulation wave length. Both stations shall resume their normal wave length when the exchange of radiograms is finished.