Page:United States Statutes at Large Volume 63 Part 2.djvu/572

 (i3 STAT.] MULTILATERAITELECOMMl-NICATIONS-OCT. 2. 1947 (Ohapter XIII, art. 33 RR) (770774) 770 § 23. When notifying the transmitting frequencies of a coast station, administrations also indicate on which of the ship calling bands the station keeps watch and, as far as pos- sible, the approximate hours of watchkeeping in Greenwich mean time (G.M .T .) . This information shall be published in the List of Coast and Ship Stations. C. Traffic. 771 § 24 (1) A mobile station, after establishing communication on a calling frequency (see 762), changes to a working fre- quency for the transmission of traffic. No traffic shall be transmitted on any frequency in the calling bands. 772 (2) Working frequencies shall be assigned to mobile stations in accordance with the provisions of 781 to 797 in- clusive. 773 § 25. (1) A coast station shall transmit its traffic on its normal working frequency or on other working frequencies assigned to it. 774 (2) Working frequencies of coast stations using the bands between 4 000 and 23 000 kc/s are included within the following limits: 4238 to 4368 kc/s 6357 to 6525 kc/s 8476 to 8745 kc/s 12 714 to 13 130 kc/s 16 952 to 17 290 kc/s 22 400 to 22 650 kc/s D. Assignment of frequencies to mobile stations." 774.1 " Although this section requires the assignment of specific frequencies to all ship stations operating in the bands between 4 000 and 23 000 kc/s, it is recommended that in the case of certain older types of transmitters now in use, the reference point for measuring frequency deviations shall be that frequency on which the emission begins. This recommendation applies only until such transmitters have been replaced or modified so as to meet the tolerance requirements specified in column 3 of appendix 3. 1869

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