Sec.  95.633   Emission bandwidth.

   (a) The authorized bandwidth (maximum permissible bandwidth of a
   transmission) for emission type H1D, J1D, R1D, H3E, J3E or R3E is 4 kHz. The
   authorized bandwidth for emission type A1D or A3E is 8 kHz. The authorized
   bandwidth for emission type F1D, G1D, F3E or G3E is 20 kHz.

   (b) The authorized bandwidth for any emission type transmitted by an R/C
   transmitter is 8 kHz.

   (c) The authorized bandwidth for emission type F3E or F2D transmitted by a
   FRS unit is 12.5 kHz.

   (d) For transmitters in the LPRS:

   (1) The authorized bandwidth for narrowband frequencies is 4 kHz and the
   channel bandwidth is 5 kHz

   (2) The channel bandwidth for standard band frequencies is 25 kHz.

   (3) The channel bandwidth for extra band frequencies is 50 kHz.

   (4) AMTS stations may use the 216.750–217.000 MHz band as a single 250 kHz
   channel so long as the signal is attenuated as specified in  Sec. 95.635(c).

   (e) For transmitters in the MICS:

   (1) The maximum authorized emission bandwidth is 300 kHz.

   (2) Lesser authorized emission bandwidths may be employed, provided that the
   unwanted emissions are attenuated as provided in  Sec. 95.635 and that the power
   radiated in any 300 kHz bandwidth does not exceed 25 microwatts EIRP. See
    Sec.  Sec. 95.605 and 95.639(g) regarding power measurement procedures.

   (3) Emission bandwidth will be determined by measuring the width of the
   signal between two points, one below the carrier center frequency and one
   above the carrier center frequency, that are 20 dB down relative to the
   maximum level of the modulated carrier. Compliance with the emission
   bandwidth limit is based on the use of measurement instrumentation employing
   a peak detector function with an instrument resolution bandwidth
   approximately equal to 1.0 percent of the emission bandwidth of the device
   under measurement.

   (f) The authorized bandwidth for any emission type transmitted by a MURS
   transmitter is specified as follows:

   (1) Emissions on frequencies 151.820 MHz, 151.880 MHz, and 151.940 MHz are
   limited to 11.25 kHz.

   (2) Emissions on frequencies 154.570 and 154.600 MHz are limited to 20.0
   kHz.

   (3) Provided, however, that all A3E emissions are limited to 8 kHz.

   (g) DSRCS-OBUs are governed under subpart L of this part.

   [ 53 FR 36789 , Sept. 22, 1988. Redesignated and amended at  61 FR 28769 , June
   6, 1996, and further redesignated and amended at  61 FR 46567 , 46568, Sept.
   4, 1996;  64 FR 69930 , Dec. 15, 1999;  65 FR 60878 , Oct. 13, 2000;  67 FR 63289 , Oct. 11, 2002;  68 FR 9902 , Mar. 3, 2003;  69 FR 46446 , Aug. 3, 2004]