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 plus-minus 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 1997 FR 1952 , Jan. 13, 1978, as amended at  52 FR 31405 , Aug. 20, 1987]