§  73.665   Use of TV aural baseband subcarriers.

   Licensees of TV broadcast stations may transmit, without further
   authorization from the FCC, subcarriers and signals within the
   composite baseband for the following purposes:

   (a) Stereophonic (biphonic, quadraphonic, etc.) sound programs under
   the provisions of § § 73.667 and 73.669.

   (b) Transmission of signals relating to the operation of TV stations,
   such as relaying broadcast materials to other stations, remote cueing
   and order messages, and control and telemetry signals for the
   transmitting system.

   (c) Transmission of pilot or control signals to enhance the station's
   program service such as (but not restricted to) activation of noise
   reduction decoders in receivers, for any other receiver control
   purpose, or for program alerting and program identification.

   (d) Subsidiary communications services.

   [ 49 FR 18105 , Apr. 27, 1984]