Page:United States Statutes at Large Volume 54 Part 2.djvu/331

 ,4 STAT.] MULTILATERAL-TELECOMMUNICATION-APR. 8, 1938 1551 [624] (2) Land stations the service of which is not continuous may not close before having: [625] 1. Finished all operations called for by a distress call; [626] 2. Exchanged all radiotelegrams originating in or destined to the mobile stations which are within their range and have signaled their presence before the effective cessation of work. [627] (3) The service of aeronautical stations shall be continuous during the entire period of flight in the sector or sectors of the course or courses for which the station in question carries on the radio service. B. SHIP STATIONS [628] §3. (1) For the international service of public correspondence, Ship stations. ship stations shall be classified into three categories according to the internal regulations of the administration to which they are subject, as follows: [6291 stations of the first category: these stations shall carry on a continuous service; [630] stations of the second category: these stations shall carry on a service of limited duration, as outlined in paragraph (2) below [Nos. 632 and 633]; [631] stations of the third category: these stations shall carry on a service of a more limited duration than that of the stations of the second category, or a service the duration of which is not determined by these Regulations. [632] (2) (a) Ship stations classified in the second category must carry on their service at least during the period assigned to them in appendix 6. This period shall be mentioned in the license. [633] (b) In the case of short crossings, they shall carry on the service during the hours determined by the administration to which they belong. [634] (3) In certain cases, the service hours of stations on ships of the third category may be mentioned in the nomenclature. [635] (4) As a general rule, when a coast station has traffic on hand for a ship station of the third category not having fixed listen- ing hours which is presumed to be within the range of the coast station, the latter shall call the ship station during the first half hour of the first and third listening periods of ship stations of the second category carrying on an 8-hour service in accordance with the provi- sions of appendix 6. P p.101 [636] §4. (1) Ship stations the service of which is not continuous may not close before having: [637] 1. Finished all operations called for by a distress call; [638] 2. Exchanged, so far as possible, all radiotelegrams originating in or destined to land stations which are within their range, and mobile stations which, being within their range, have signaled their presence before the effective cessation of work.

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