§ 74.603   Sound channels.

   (a) The frequencies listed in § 74.602(a) may be used for the simultaneous
   transmission of the picture and sound portions of TV broadcast programs and
   for cue and order circuits, either by means of multiplexing or by the use of
   a separate transmitter within the same channel. When multiplexing of a TV
   STL  station  is  contemplated,  consideration  should be given to the
   requirements  of  § 73.687 of this Chapter regarding the overall system
   performance requirements. Applications for new TV pickup, TV STL, TV relay
   and TV translator relay stations shall clearly indicate the nature of any
   mutliplexing proposed. Multiplexing equipment may be installed on licensed
   equipment without authority of the FCC, provided the installation of such
   apparatus on a TV STL station shall not result in degradation of the overall
   system performance of the TV broadcast station below that permitted by
   § 73.687 of this chapter.

   (b) [Reserved]

   (c) Aural STL or intercity relay stations licensed as of July 10, 1970, to
   operate  in the frequency band 942-947 MHz, may continue to so operate
   pending a decision as to their disposition through a future rule making
   proceeding.

   (d)  Remote  pickup broadcast stations may be used in conjunction with
   television pickup stations for the transmission of the aural portion of
   television programs or events that occur outside a television studio and for
   the transmission of cues, orders, and other related communications necessary
   thereto. The rules governing remote pickup broadcast stations are contained
   in Subpart D of this part.

   [ 28 FR 13718 , Dec. 14, 1963, as amended at  47 FR 55936 , Dec. 14, 1982;  48 FR 24385 , June 1, 1983;  68 FR 12769 , Mar. 17, 2003]

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