Page:United States Statutes at Large Volume 63 Part 2.djvu/574

 6,3 STAT.] MULTIILAT'ERAI. -T TE L EC(OMMUNICATIONS-OCT. 2 . 1947 (Chapter XIII, art. 33 RR) (775-779) 1. Calling Frequencies of Ship Stations 775 § 26. (1) The calling frequencies assigned to ship stations are included within the following bands: 4177 to 4187 kc/s ,6266.5 to 6280.5 kc/s 8354 to 8374 kc/s 12 531 to 12 561 kc/s 16 708 to 16 748 kc/s 22 220 to 22 270 kc/s 776 (2) In the 4 000 kc/s maritime mobile service band, the calling frequencies must be uniformly distributed within the calling band. They are preferably spaced 1 kc/s apart. The extreme frequencies assignable are 4 178 and 4 186 kc/s as indicated in appendix 10. 777 (3) In each of the other maritime mobile service bands between 4 000 and 18 000 kc/s, the calling frequencies must be in harmonic relationship with those in the 4 000 kc/s call- ing band. In the 22 000 kc/s calling band, the preferable spac- ing of calling frequencies is 5 kc/s. 778 § 27. The administration to which a ship station is sub- ject shall assign to it a series of calling frequencies including one frequency in each of the bands in which the station is equipped to transmit. In the bands between 4 000 and 18 000 kc/s, the frequencies assigned to each ship station shall be in harmonic relationship. Each administration must take the necessary steps to assign such harmonic series of calling fre- quencies to ships in accordance with an orderly system of rotation so as to distribute these frequencies uniformly throughout the calling bands as outlined in 776. The same sys- tem of uniform distribution shall be applied in the assignment of calling frequencies in the 22 000 kc/s calling band. 779 § 28. (1) The centre calling frequency in each of the calling bands indicated in 775 shall be reserved as far as possible for 1871

�