§  90.1323   Emission limits.

   (a) The power of any emission outside a licensee's frequency band(s) of
   operation shall be attenuated below the transmitter power (P) within
   the licensed band(s) of operation, measured in watts, by at least 43 +
   10 log (P) dB. Compliance with this provision is based on the use of
   measurement instrumentation employing a resolution bandwidth of 1 MHz
   or less, but at least one percent of the emission bandwidth of the
   fundamental emission of the transmitter, provided the measured energy
   is integrated over a 1 MHz bandwidth.

   (b) When an emission outside of the authorized bandwidth causes harmful
   interference, the Commission may, at its discretion, require greater
   attenuation than specified in this section.