Sec.  80.251   Scope.

   (a) This subpart gives the general technical requirements for certification
   of equipment used on compulsory ships. Such equipment includes
   automatic-alarm-signal keying devices, survival craft radio equipment, watch
   receivers, and radar.

   (b) The equipment described in this subpart must be certificated.

   (c) The term transmitter means the transmitter unit and all auxiliary
   equipment necessary to make this unit operate as a main or emergency
   transmitter in a ship station at sea. Each separate motor-generator,
   rectifier, or other unit required to convert the ship primary power to the
   phase, frequency, or voltage necessary to energize the transmitter unit is
   considered a component of the transmitter.

   (d) Average ship station antenna means an actual antenna installed on board
   ship having a capacitance of 750 picofarads and an effective resistance of 4
   ohms at a frequency of 500 kHz, or an artificial antenna having the same
   electrical characteristics.

   [ 51 FR 31213 , Sept. 2, 1986, as amended at  63 FR 36606 , July 7, 1998;  68 FR 46966 , Aug. 7, 2003]