63 STAT.] MULTILATERTERAL LECOMMUNICATIONS-OCT. 2, 1947 (Chapter XIU, art. 34 RR) (s17-426) 817 (3) However, an administration may assign to a sta- tion other frequencies for call and reply. 818 (4) The distress signal in radiotelephony is defined in 873. B. Watch. 819 § 10. (1) Every coast station using the calling frequency 2 182 kc/s must, as far as possible, maintain watch on this frequency during its working hours. 820 (2) If this watch is not maintained by an operator, the method used shall be specifically indicated in the List of Coast and Ship Stations. C. Traffic. 821 § 11. (1) Coast stations which use the frequency 2 182 kc/s for calling must be able to use at least one other frequency in the portions of the band 1 605 - 2 850 kc/s in which the maritime mobile radiotelephone service is admitted. 822 (2) One of these frequencies is printed in heavy type in the List of Coast and Ship Stations to indicate that it is the normal working frequency of the station. Supplementary frequencies, if assigned, are shown in ordinary type. 823 (3) Working frequencies of coast stations must be chcsen in such a manner as to avoid interference with other stations. D. Additional Provisions applying to Region 1 824 § 12. (1) In Region 1, the provisions of this sub-section apply only to the service of mobile radiotelephone stations using the frequency 2 182 kc/s as a calling and distress frequency. 825 (2) The power of the unmodulated carrier-wave in the antenna of such mobile stations shall not exceed 100 watts except in the case of special agreements as provided in 550. 826 (3) With a view to greater safety of life at sea all radiotelephone stations of the maritime mobile service which normally keep watch on frequencies in this band take steps. as far as possible, to keep watch on the distress frequency 1885
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