Sec.  73.506   Classes of noncommercial educational FM stations and channels.

   (a) Noncommercial educational stations operating on the channels specified
   in  Sec. 73.501 are divided into the following classes:

   (1) A Class D educational station is one operating with no more than 10
   watts transmitter power output.

   (2) A Class D educational (secondary) station is one operating with no more
   than 10 watts transmitter power output in accordance with the terms of
    Sec. 73.512 or which has elected to follow these requirements before they become
   applicable under the terms of  Sec. 73.512.

   (3) Noncommercial educational FM (NCE-FM) stations with more than 10 watts
   transmitter power output are classified as Class A, B1, B, C3, C2, C1, or C
   depending on the station's effective radiated power and antenna height above
   average terrain, and on the zone in which the station's transmitter is
   located,  on  the  same  basis as set forth in  Sec.  Sec. 73.210 and 73.211 for
   commercial stations.

   (b) Any noncommercial educational station except Class D may be assigned to
   any of the channels listed in  Sec. 73.501. Class D noncommercial educational FM
   stations applied for or authorized prior to June 1, 1980, may continue to
   operate on their authorized channels subject to the provisions of  Sec. 73.512.

   [ 43 FR 39715 , Sept. 6, 1978, as amended at  49 FR 10264 , Mar. 20, 1984;  52 FR 47569 , Dec. 15, 1987;  54 FR 16367 , Apr. 24, 1989;  54 FR 19374 , May 5, 1989]