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.