Sec.  1.1310   Radiofrequency radiation exposure limits.

   The criteria listed in table 1 shall be used to evaluate the environmental
   impact of human exposure to radiofrequency (RF) radiation as specified in
    Sec. 1.1307(b), except in the case of portable devices which shall be evaluated
   according to the provisions of  Sec. 2.1093 of this chapter. Further information
   on evaluating compliance with these limits can be found in the FCC's OST/OET
   Bulletin Number 65, “Evaluating Compliance with FCC-Specified Guidelines for
   Human Exposure to Radiofrequency Radiation.”

   Note  to  Introductory  Paragraph: These limits are generally based on
   recommended  exposure  guidelines published by the National Council on
   Radiation Protection and Measurements (NCRP) in “Biological Effects and
   Exposure Criteria for Radiofrequency Electromagnetic Fields,” NCRP Report
   No. 86, Sections 17.4.1, 17.4.1.1, 17.4.2 and 17.4.3. Copyright NCRP, 1986,
   Bethesda, Maryland 20814. In the frequency range from 100 MHz to 1500 MHz,
   exposure limits for field strength and power density are also generally
   based on guidelines recommended by the American National Standards Institute
   (ANSI) in Section 4.1 of “IEEE Standard for Safety Levels with Respect to
   Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300
   GHz,” ANSI/IEEE C95.1–1992, Copyright 1992 by the Institute of Electrical
   and Electronics Engineers, Inc., New York, New York 10017.

   Table 1—Limits for Maximum Permissible Exposure (MPE)
   Frequency range
   (MHz) Electric field strength
   (V/m) Magnetic field strength
   (A/m) Power density
   (mW/cm^2) Averaging time
   (minutes)
             (A) Limits for Occupational/Controlled Exposures
             0.3–3.0                   614   1.63     *(100)  6
             3.0–30                 1842/f 4.89/f *(900/f^2)  6
             30–300                   61.4  0.163        1.0  6
             300–1500                                  f/300  6
             1500–100,000                                  5  6
             (B) Limits for General Population/Uncontrolled Exposure
             0.3–1.34                  614   1.63     *(100) 30
             1.34–30                 824/f 2.19/f *(180/f^2) 30
             30–300                   27.5  0.073        0.2 30
             300–1500                                 f/1500 30
             1500–100,000                                1.0 30

   f = frequency in MHz

   * = Plane-wave equivalent power density

   Note 1 to Table 1: Occupational/controlled limits apply in situations in
   which persons are exposed as a consequence of their employment provided
   those persons are fully aware of the potential for exposure and can exercise
   control over their exposure. Limits for occupational/controlled exposure
   also apply in situations when an individual is transient through a location
   where occupational/controlled limits apply provided he or she is made aware
   of the potential for exposure.

   Note  2 to Table 1: General population/uncontrolled exposures apply in
   situations in which the general public may be exposed, or in which persons
   that are exposed as a consequence of their employment may not be fully aware
   of  the  potential for exposure or can not exercise control over their
   exposure.

   [ 61 FR 41016 , Aug. 7, 1996]