Sec. 76.610  Operation in the frequency bands 108-137 and 225-400 MHz--
          Scope of application.

    The provisions of Secs. 76.611 (effective July 1, 1990), 76.612, 
76.613, 76.614 and 76.615 are applicable to all cable television systems 
transmitting carriers or other signal components carried at an average 
power level equal to or greater than 10-4 watts across a 25 
kHz bandwidth in any 160 microsecond period, at any point in the cable 
distribution system in the frequency bands 108-137 and 225-400 MHz for 
any purpose. For grandfathered systems, refer to Secs. 76.618 and 
76.619.

    Note 1: See the provisions of Sec. 76.616 for cable operation near 
certain aeronautical and marine emergency radio frequencies.

    Note 2: Until January 1, 1990, the band 136-137 MHz is allocated as 
an alternative allocation to the space operation, meteorological-
satellite service and the space research service on a primary basis. 
After January 1, 1990, the space service will become secondary to 
aeronautical mobile service radio. Until January 1, 1990, the band 136 
to 137 MHz is excluded from the rule sections regarding protection of 
aeronautical frequencies.


[ 50 FR 29399 , July 19, 1985]