47 CFR 80.68 - Facilities requirements for public coast stations using telegraphy.
Public coast station using telegraphy must be provided with the following facilities.
(a) Stations having a frequency assignment below 150 kHz must:
(1) Transmit A1A emission on at least one working frequency within the band 100-150 kHz;
(c) Stations having frequency assignments above 4000 kHz must be equipped to receive on each of their assigned frequencies and all ship station radiotelegraphy frequencies in the same sub-band as the assigned frequency of the coast station. See subpart H of this part for the list of frequencies.