Page:United States Statutes at Large Volume 38 Part 2.djvu/503

 1720 RADIOTELEGRAPHIC CONVENTION. J umr 5, 1912. ARTICLE VH. nmgy require- 1. All stations are bound to carry on the service with the minimum '°°“t°‘ of energy necessig to insure safe comm1m1cation. _ 102. Every coas or shipboard station shall comply with the folwm` g re uirements: (a) Thii waves sent out shall be as pure and as little damped as p0ssible· In paiticular, the use of transmittiugsdevices  which the waves sent out are obtained by means of spar directly in the aerial (plain aerial) shall not be authorized except in cases of distress. · _ It may, however, be ermitted in the case of certain spec1alstations (those of small vessels ilor example) in which the primary power does not exceed 50 watts. _ _ (b) The a paratus shall be able to transmit and receive at a speed ual to at liiast 20 words a minute, words to be counted at the rate
 * 2 5 letters each. _ _

New installations using more than 50 watts shall be equipped m such a way as to make it possible to obtain with ease severa ranges less than the normal range, the_ shortest being approximately 15 nautical miles. Existing installations using more than 50 watts shall be remodeled, wherever possible, so as to comply with the foregoing VISIOIIS. pugc) Receiving apparatus shall be able to receive, with the greatest possible protection against interference, transmissions of the wave engths specified in the present Regulations, up to 600 lll8l56l'B.‘ _ 3. Stations serving solely for etermming thepositnon of ships ggildiophares) shall not operate over a radius greater than 30 nautical es. Anrxcnn VIII. Sgjm. ¤¤i1>b¤¤¤i Inde dently of the general r uirements s cified under Article °°° "°°°° VII, stilzibns on shipboard shall likewise compl); with the following r uirements: ala) The wer transmitted to the radio a paratus, measured at the terminals of the generator of the station, slliall not, under normal conditions, exceed one kilowatt. (b) Subject to the provisions of Article XXXV, paragraph 2 ggwer exceeding one kilowatt may be employed when the vessel _ ds it necessary to correspond while more than 200 nautical miles distant from the nearest costa] station, or when owin to unusual circumstances, communication can be established only lay means of an increase of power. Aarrcm IX. sggxgpma mum 1. No station on shipboard shall be established or worked by ‘° ‘ private enterprise without a license issued by the Government to which the vessel is sub'ect. Stations on board oi ships having their port of registry in a colony, possession, or protectorate may be described as subject to the authority of such co ony, possession, or protectorate. _mc¤¤mm sr on- 2. Every shipboard station holding a license issued b one of the °“"‘°°“’°‘ contracting Gjovernments shall be considered by the other Governments as havmlg an installation fulfilling the requirements stipulated in the present egulations. Competent authorities of the countries at which the ship calls may deman the production of the license. In default of such production, these authorities may satisfy themselves as to whether the radio installations of the ship fulfill the requirements imposed by the present regulations.