Page:United States Statutes at Large Volume 38 Part 2.djvu/509

 1726 RADIOTELEGRAPHIC CONVENTION. JULY 5, 1912. m heavy mmm- 2. In waters where the radio traflic is very great (British Chan- °°”‘ nel, etc.), a coastal station should not, as a general rule, be called by a shi board station unless the former is within normal range of the shipgoard station and not imtil the distance of the vessel rom ttlhe Iqoastal station is less than 75 per cent of the normal range of e tter. ,,g‘§"'“‘“"“‘°'“°*’°’ 3. Before proceeding to call, the coastal station or the station on shipboard shall adjust its receiving apparatus to its maximum sensibility and make sure that no other correspondence is being carried on within its radius of action; if it finds otherwise, it shall wait for the first pause, unless it is convinced that its call will not be likely to disturb the correspondence in progress. The same applies in case the station desires to answer a call. W¤v¤¢¤¤¤¤¤¤¤· 4. For calling, evgy station shall use the normal wave of the station it wishes to c. ’·"““""‘¥’“""‘ 5. If in spite of these precautions the transmission of a radiogram is impeded at, any place, the call shall cease upon the first request from a coastal station open to public correspondence. The latter station shall insuch case indicate the approximate length of time it will be necessargoto wait. ,,,,’Lf*’°‘i‘*“*"“° 6. The station onship ard shall make known to every coastal station to which it has signaled its presence the moment at which it proposes to cease its operations and the probable duration of the mterruption. . · -A.R'I'IOLE XXV. °°“•‘8¤*'· 1. The call shall compriseithe signal 1 • I • 1 ’ the call letters of the station called transmitted three times, the word "from" (de) followed by the call letters of the sending station transmitted three times. A¤”°”’@*'- 2. The called station shall answer by making the signal 1 O Q O 1 ’ followed by the call letters of the corresponding station transmitted three times, the word "from," its own call letters, and the signal 1 O 1 • °°°°"‘°‘°‘ 3. Stations desiring to enter into communication with ships, without, however, knowing the names of the ships within their radius of action may employihthe signal •-¤¤ • 1 • nn nn • an (signal of e provisions of paragraphs 1 and 2 are likewise applica le to the transmission of a s1gnal of inquiry and to the answer to such signal. Anrrcuz XXVI. °*¤•¤°° •¤¤"¤'°<*· If a station called does not answer the call (Article XXV) transmitted three times at intervals of two minutes, the call shall not be resumed until after an interval of Efteen minutes, the station issuing the call having first made sure of the fact that no radio correspondence is in progress. ARTICLE XXVII. _§Q_8h P°"°* *¤°°· Every station which has occasion to transmit a radiogram requiring the use of high power shall first send out three times the signal of warning 1- ·-¤ • • - —¤, with the minimum of power necessary to reach the neighboring stations. It shall not begin to transmit with high power until 30 seconds after sending the signal of warning.