Goto Section: 2.1091 | 2.1201 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 2.1093 Radiofrequency radiation exposure evaluation: portable devices.
(a) Requirements of this section are a consequence of Commission
responsibilities under the National Environmental Policy Act to
evaluate the environmental significance of its actions. See subpart I
of part 1 of this chapter, in particular § 1.1307(b).
(b) For purposes of this section, the definitions in § 1.1307(b)(2) of
this chapter shall apply. A portable device is defined as a
transmitting device designed to be used in other than fixed locations
and to generally be used in such a way that the RF source's radiating
structure(s) is/are within 20 centimeters of the body of the user.
(c)(1) Evaluation of compliance with the exposure limits in § 1.1310 of
this chapter, and preparation of an EA if the limits are exceeded, is
necessary for portable devices having single RF sources with more than
an available maximum time-averaged power of 1 mW, more than the ERP
listed in Table 1 to § 1.1307(b)(3)(i)(C), or more than the Pth in the
following formula, whichever is greater. The following formula shall
only be used in conjunction with portable devices not exempt by
§ 1.1307(b)(3)(i)(C) at distances from 0.5 centimeters to 20 centimeters
and frequencies from 0.3 GHz to 6 GHz.
eCFR graphic er01ap20.007.gif
View or download PDF
d = the minimum separation distance (cm) in any direction from any part
of the device antenna(s) or radiating structure(s) to the body of the
(2) For multiple mobile or portable RF sources within a device
operating in the same time averaging period, evaluation is required if
the formula in § 1.1307(b)(3)(ii)(B) of this chapter is applied to
determine the exemption ratio and the result is greater than 1.
(3) Unless otherwise specified in this chapter, any other single
portable or multiple mobile and portable RF source(s) associated with a
device is exempt from routine environmental evaluation for RF exposure
prior to equipment authorization or use, except as specified in
§ 1.1307(c) and (d) of this chapter.
(d)(1) Applications for equipment authorization of portable RF sources
subject to routine environmental evaluation must contain a statement
confirming compliance with the limits specified in § 1.1310 of this
chapter as part of their application. Technical information showing the
basis for this statement must be submitted to the Commission upon
request. The SAR limits specified in § 1.1310(a) through (c) of this
chapter shall be used for evaluation of portable devices transmitting
in the frequency range from 100 kHz to 6 GHz. Portable devices that
transmit at frequencies above 6 GHz shall be evaluated in terms of the
MPE limits specified in Table 1 to § 1.1310(e)(1) of this chapter. A
minimum separation distance applicable to the operating configurations
and exposure conditions of the device shall be used for the evaluation.
In general, maximum time-averaged power levels must be used for
evaluation. All unlicensed personal communications service (PCS)
devices and unlicensed NII devices shall be subject to the limits for
general population/uncontrolled exposure.
(2) Evaluation of compliance with the SAR limits can be demonstrated by
either laboratory measurement techniques or by computational modeling.
The latter must be supported by adequate documentation showing that the
numerical method as implemented in the computational software has been
fully validated; in addition, the equipment under test and exposure
conditions must be modeled according to protocols established by
FCC-accepted numerical computation standards or available FCC
procedures for the specific computational method. Guidance regarding
SAR measurement techniques can be found in the Office of Engineering
and Technology (OET) Laboratory Division Knowledge Database (KDB). The
staff guidance provided in the KDB does not necessarily represent the
only acceptable methods for measuring RF exposure or RF emissions, and
is not binding on the Commission or any interested party.
(3) For purposes of analyzing portable RF sources under the
occupational/controlled SAR criteria specified in § 1.1310 of this
chapter, time averaging provisions of the limits may be used in
conjunction with the maximum duty factor to determine maximum
time-averaged exposure levels under normal operating conditions.
(4) The time averaging provisions for occupational/controlled SAR
criteria, based on maximum duty factor, may not be used in determining
typical exposure levels for portable devices intended for use by
consumers, such as cellular telephones, that are considered to operate
in general population/uncontrolled environments as defined in § 1.1310
of this chapter. However, “source-based” time averaging based on an
inherent property of the RF source is allowed over a time period not to
exceed 30 minutes. An example of this would be the determination of
exposure from a device that uses digital technology such as a
time-division multiple-access (TDMA) scheme for transmission of a
(5) Visual advisories (such as labeling, embossing, or on an equivalent
electronic display) on portable devices designed only for occupational
use can be used as part of an applicant's evidence of the device user's
awareness of occupational/controlled exposure limits. Such visual
advisories shall be legible and clearly visible to the user from the
exterior of the device. Visual advisories must indicate that the device
is for occupational use only, refer the user to specific information on
RF exposure, such as that provided in a user manual and note that the
advisory and its information is required for FCC RF exposure
compliance. Such instructional material must provide users with
information on how to use the device and to ensure users are fully
aware of and able to exercise control over their exposure to satisfy
compliance with the occupational/controlled exposure limits. A sample
of the visual advisory, illustrating its location on the device, and
any instructional material intended to accompany the device when
marketed, shall be filed with the Commission along with the application
for equipment authorization. Details of any special training
requirements pertinent to mitigating and limiting RF exposure should
also be submitted. Holders of grants for portable devices to be used in
occupational settings are encouraged, but not required, to coordinate
with end-user organizations to ensure appropriate RF safety training.
(6) General population/uncontrolled exposure limits defined in § 1.1310
of this chapter apply to portable devices intended for use by consumers
or persons who are exposed as a consequence of their employment and may
not be fully aware of the potential for exposure or cannot exercise
control over their exposure. No communication with the consumer
including either visual advisories or manual instructions will be
considered sufficient to allow consumer portable devices to be
evaluated subject to limits for occupational/controlled exposure
specified in § 1.1310 of this chapter.
[ 61 FR 41017 , Aug. 7, 1996, as amended at 62 FR 4655 , Jan. 31, 1997; 62 FR 9658 , Mar. 3, 1997; 62 FR 47967 , Sept. 12, 1997; 65 FR 44007 , July
17, 2000; 68 FR 38638 , June 30, 2003; 69 FR 3264 , Jan. 23, 2004; 70 FR 24725 , May 11, 2005; 74 FR 22704 , May 14, 2009; 76 FR 67607 , Nov. 2,
2011; 78 FR 21559 , Apr. 11, 2013; 78 FR 33652 , June 4, 2013; 80 FR 36221 , June 23, 2015; 81 FR 79936 , Nov. 14, 2016; 82 FR 43870 , Sept.
20, 2017; 84 FR 25689 , June 4, 2019; 85 FR 18147 , Apr. 1, 2020; 85 FR 38739 , June 26, 2020]
Subpart K—Importation of Devices Capable of Causing Harmful Interference
Goto Section: 2.1091 | 2.1201
Goto Year: 2020 |
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
Helping make public information public