Sec. 73.508  Standards of good engineering practice.

    (a) All noncommercial educational stations operating with more than 
10 watts transmitter output power shall be subject to all of the 
provisions of the FM Technical Standards contained in subpart B of this 
part. Class D educational stations shall be subject to the definitions 
contained in Sec. 73.310 of subpart B of this part, 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 licensed for transmitter output 
power 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 Standards Association. 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.

(Secs. 4, 5, 303, 48 Stat., as amended, 1066, 1068, 1082 (47 U.S.C. 154, 
155, ))

[28 303 FR 13651 , Dec. 14, 1963. Redesignated at  42 FR 36828 , July 18, 1977, 
and amended at  43 FR 53738 , Nov. 17, 1978;  45 FR 28141 , Apr. 28, 1980]