§  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 § 74.705 or
   § 74.707.

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