54STAT.] MULTILATERAL-TELECOMMUNICATION-APR . 8 , 1938 1569 [715] §5. (1) All coast stations participating in the public radio- telephone service in this band must, so far as possible, assure the watch on 1,650 kc (181.8 m) during their working hours. [716] (2) In the European region, in order to increase the safety of human life at sea, all stations of the mobile service maintaining tele- phone service with ships of low tonnage must, so far as possible, make the necessary arrangements to keep watch on the distress-wave of 1,650 kc (181.8 m) for three minutes each hour beginning at x o'clock, Greenwich mean time (G. M. T.), from 0 to 24 o'clock (beginning at midnight). [717] (3) During the above-mentioned intervals, all transmission, except distress, urgent, and safety transmissions, must cease in the 1,630 to 1,670 kc (184.0 to 179.6 m) bands. [718] §6. (1) Coast and ship stations using the 1,650-kc (181.8-m) calling-wave must have available at least one other wave in those parts of the band of 1,560 to 3,635 kc (192.3 to 82.53 m) in which radiotelephone services are admitted (art. 7, §7). Ant e, p. 1433. [719] This second wave shall be printed in boldface type in the nomenclature of the stations, to indicate that it is the normal working- wave of the station. The working-waves of these stations must be selected in such a manner as to avoid interference with the other radio stations. [720] (2) In addition to the normal working-wave, coast and ship stations may use additional waves in the band mentioned. These waves shall be indicated in the nomenclature in ordinary type. [721] §7. (1) In case of distress, if it is not possible to use for radio- telephony the international distress-wave of 500 kc (600 m) or the calling- and distress-wave of 1,650 kc (181.8 m), the station may use any other wave to call attention, report its position, and obtain help. [722] (2) The radiotelephone distress signal shall consist of the spoken expression MAYDAY (corresponding to the French pronun- ciation of the expression "m'aider"). [723] §8. So far as it is practicable and reasonable, the provisions concerning radiotelegraph service shall be applied to the mobile radio- telephone service as regards interference; distress, urgent, and safety services; closing of service and calling (articles 17, 20, 22, 24, and 25). Ai. pp. 1507, 119, [724] §9. In the service of low-power mobile radiotelephone stations, the procedure given in appendix 14 of these Regulations may be . P.pa143. applied. ARTICLE 32 Special Services A. METEOROLOGY [725] §1. Meteorological messages shall include: Meteorogy. [726] (a) messages intended for meteorological services officially charged with making weather forecasts and with the protection of maritime and aerial navigation;
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