§  5.101   Frequency stability.

   An applicant must propose to use a frequency tolerance that would
   confine emissions within the band of operation, unless permission is
   granted to use a greater frequency tolerance. Equipment is presumed to
   operate over the temperature range -20 to +50 degrees celsius with an
   input voltage variation of 85% to 115% of rated input voltage, unless
   justification is presented to demonstrate otherwise.