§ 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.

   return arrow Back to Top