Sec.  74.761   Frequency tolerance.

   The licensee of a low power TV, TV translator, or TV booster station shall
   maintain  the  transmitter  output frequencies as set forth below. The
   frequency tolerance of stations using direct frequency conversion of a
   received signal and not engaging in offset carrier operation as set forth in
   paragraph (d) of this section will be referenced to the authorized plus or
   minus 10 kHz offset, if any, of the primary station.

   (a) The visual carrier shall be maintained to within 0.02 percent of the
   assigned visual carrier frequency for transmitters rated at not more than
   100 watts peak visual power.

   (b) The visual carrier shall be maintained to within 0.002 percent of the
   assigned visual carrier frequency for transmitters rated at more than 100
   watts peak visual power.

   (c) The aural carrier of stations employing modulating equipment shall be
   maintained at 4.5 MHz  ±1 kHz above the visual carrier frequency.

   (d) The visual carrier shall be maintained to within 1 kHz of the assigned
   channel carrier frequency if the low power TV, TV translator, or TV booster
   station  is authorized with a specified offset designation in order to
   provide protection under the provisions of  Sec. 74.705 or  Sec. 74.707.

   [ 43 FR 1952 , Jan. 13, 1978, as amended at  52 FR 31405 , Aug. 20, 1987]