47 C.F.R. § 80.307 Compulsory use of radiotelegraph auto alarm.
Title 47 - Telecommunication
The radiotelegraph auto alarm required on a cargo ship subject to the radiotelegraph provisions of part II of title III of the Communications Act or the Safety Convention must be in operation, connected to the main antenna and adjusted for optimum efficiency at all times while the ship is being navigated in the open sea when a radio officer is not listening on the frequency 500 kHz, except under the circumstances as set forth in §80.306(b).
Title 47: Telecommunication
PART 80—STATIONS IN THE MARITIME SERVICES
Subpart G—Safety Watch Requirements and Procedures
Ship Station Safety Watches
§ 80.307 Compulsory use of radiotelegraph auto alarm.
