Sec.  18.301   Operating frequencies.

   ISM  equipment  may be operated on any frequency above 9 kHz except as
   indicated in  Sec. 18.303. The following frequency bands, in accordance with
    Sec. 2.106 of the rules, are allocated for use by ISM equipment:
   ISM frequency Tolerance
   6.78 MHz       ±15.0 kHz
   13.56 MHz      ±7.0 kHz
   27.12 MHz      ±163.0 kHz
   40.68 MHz      ±20.0 kHz
   915 MHz        ±13.0 MHz
   2,450 MHz      ±50.0 MHz
   5,800 MHz      ±75.0 MHz
   24,125 MHz     ±125.0 MHz
   61.25 GHz      ±250.0 MHz
   122.50 GHz     ±500.0 MHz
   245.00 GHz     ±1.0 GHz

   Note: The use of the 6.78 MHz  ±15 kHz frequency band is subject to the
   conditions of footnote 524 of the Table of Allocations. See  Sec. 2.106.