Sec. 80.99  Radiotelegraph station identification.

    This section applies to coast, ship and survival craft stations 
authorized to transmit in the band 405-525 kHz.
    (a) The station transmitting radiotelegraph emissions must be 
identified by its call sign. The call sign must be transmitted with the 
telegraphy emission normally used by the station. The call sign must be 
transmitted at 20 minute intervals when transmission is sustained for 
more than 20 minutes. When a ship station is exchanging public 
correspondence communications, the identification may be deferred until 
completion of each communication with any other station.
    (b) The requirements of this section do not apply to survival craft 
stations when transmitting distress signals automatically or when 
operating on 121.500 MHz for radiobeacon purposes.
    (c) Emergency position indicating radiobeacon stations do not 
require identification.