**PUBLIC NOTICE**![](media/image1.png){width="0.8041666666666667in"
height="0.8034722222222223in"}

**Federal Communications Commission**

**445 Twelfth St., S.W.**

**Washington, D.C. 20554**

**DA 01-1557**

**Released: June 29, 2001**

# Office of Engineering and Technology Announces Release

#  of Revised Supplement C to OET Bulletin 65 

The Commission's Office of Engineering and Technology has released
Edition 01-01 of Supplement C to OET Bulletin 65 "Evaluating Compliance
with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic
Fields." This revised edition, which replaces Edition 97-01, provides
additional guidance and information for evaluating compliance of mobile
and portable devices with FCC limits for radiofrequency (RF) exposure.

Since 1997, Standards Coordinating Committee 34, Subcommittee 2, of the
Institute of Electrical and Electronics Engineers, Inc. (IEEE
SCC-34/SC-2) has been developing standard recommended procedures for
evaluating portable devices using measurement or computational methods.
While this task has not yet been completed, sufficient consensus now
exists among industry experts to allow incorporation of the bulk of the
committee's work into Supplement C. Pending adoption of a formal
industry standard, this revised version of Supplement C provides
standardized guidance for performing Specific Absorption Rate (SAR)
measurements on portable devices, as well as updated guidance for other
measurement-based and computational methods for evaluating RF exposure.

With the establishment of this standardized guidance, the Commission
will now be able to allow Telecommunications Certification Bodies (TCBs)
to process certain applications for equipment authorization containing
RF exposure evaluations. Training of the TCBs in RF exposure evaluation
techniques will be conducted on August 27, 28 and 29, 2001, in Columbia,
MD, in cooperation with the TCB Council. Additional information
regarding the time and location of the training will be sent to TCBs in
the near future. Following training of TCBs, we anticipate allowing TCBs
to start processing such applications by October 1, 2001. This, along
with continued processing of such applications by the FCC's Laboratory
Division, will allow alternative paths to approval for equipment
manufacturers, ensuring improvement in time-to-market for new devices.

Edition 01-01 provides for the interim use of existing head phantoms
until the new standard head phantom described in the new guidelines is
readily commercially available. When the new standard head phantom
becomes commercially available, the Commission will issue a Public
Notice establishing a transition period of 3-6 months to allow
interested parties to acquire this head phantom. After the transition
period, the new standard head phantom should be used for all SAR
testing.

Parties are encouraged to use the guidelines contained in Edition 01-01
as soon as possible. The option of using a TCB to process applications
for equipment authorization will be available only for applications with
RF safety evaluations prepared in accordance with the new guidelines.

New Edition 01-01 of Supplement C supercedes previous Edition 97-01. The
document may be downloaded from the Commission's public website in
either Microsoft Word or Adobe Acrobat .pdf format at
http://www.fcc.gov/oet.