Chapter XIII.
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/statutes-at-large/vol-63/chapter-xiii-6561873·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Chap. XIII, art. 33 RR) (780–785) the use of aircraft desiring to communicate with stations of the maritime mobile service. These frequencies are the following: 4 182; 6 273; 8 364; 12 546; 16 728 and 22 245 kc/s. 780
(2)The frequency 8 364 kc/s must be used by lifeboats, liferafts and other survival craft, if they are equipped to transmit on frequencies between 4 000 and 23 000 kc/s, and if they desire to establish with stations of the maritime mobile service communications relating to search and rescue operations see (600). 2. Working Frequencies of Mobile Stations *a)**General.* 781 § 29.
(1)The working frequencies for passenger ships are so spaced as to provide clear channels. In the 4 000 kc/s band, the two channels adjacent to the calling band are 5 kc/s wide and the remainder are 2.5 kc/s wide, the extreme frequencies assignable being 4 135 and 4 175 kc/s as indicated in appendix 10. 782
(2)In the 4 000 kc/s band, the working frequencies of cargo ships are spaced 0.5 kc/s apart, the extreme frequencies assignable being 4 188 and 4 236.5 kc/s as indicated in appendix 10. 783
(3)The working frequencies assigned to each ship station in the 6 000, 8 000, 12 000 and 16 000 kc/s bands must be harmonically related to those assigned in the 4 000 kc/s band. 784
(4)In the case of the 22 000 kc/s band, which is not in harmonic relationship with the other bands, the frequencies are spaced as follows and indicated in appendix 10: 785 *a)* in the passenger ship band the two channels adjacent to the calling band are 20 kc/s wide and the remaining channels are 10 kc/s wide, the extreme frequencies assignable being 22 075 and 22 215 kc/s; 63 Stat. 1874 (786–791) (
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