6A600 A
What is an operating control requirement of a ship station using telegraphy?
A.The ship station must be capable of automatically changing from telegraphy transmission to telegraph reception
B.A ship station control operator must stand watch on emergency channels at all times
C.Only a licensed First Class Radiotelegraph Operator may operate a ship station
D.The ship station must be capable of changing from one radio channel to another within five seconds
