Sec.  73.508   Standards of good engineering practice.

   (a) All noncommercial educational stations and LPFM stations operating with
   more than 10 watts transmitter power output shall be subject to all of the
   provisions of the FM Technical Standards contained in subpart B of this
   part. Class D educational stations and LPFM stations operating with 10 watts
   or less transmitter output power shall be subject to the definitions
   contained in  Sec. 73.310, and also to those other provisions of the FM Technical
   Standards which are specifically made applicable to them by the provisions
   of this subpart.

   (b) The transmitter and associated transmitting equipment of each
   noncommercial educational FM station and LPFM station licensed for
   transmitter power output above 10 watts must be designed, constructed and
   operated in accordance with  Sec. 73.317.

   (c) The transmitter and associated transmitting equipment of each
   noncommercial educational FM station licensed for transmitter power output
   of 10 watts or less, although not required to meet all requirements of
    Sec. 73.317, must be constructed with the safety provisions of the current
   national electrical code as approved by the American National Standards
   Institute. These stations must be operated, tuned, and adjusted so that
   emissions are not radiated outside the authorized band causing or which are
   capable of causing interference to the communications of other stations. The
   audio distortion, audio frequency range, carrier hum, noise level, and other
   essential phases of the operation which control the external effects, must
   be at all times capable of providing satisfactory broadcast service. Studio
   equipment properly covered by an underwriter's certificate will be
   considered as satisfying safety requirements.

   [ 65 FR 7640 , Feb. 15, 2000]