§  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 § 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 § 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 § 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]