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                                               Released:  September 2, 1999




FCC'S OFFICE OF ENGINEERING AND TECHNOLOGY ISSUES REVISED BULLETIN
ON BIOLOGICAL EFFECTS OF RADIOFREQUENCY ELECTROMAGNETIC FIELDS 


The FCC's Office of Engineering and Technology (OET) has issued a revised technical bulletin
entitled, "Questions and Answers about Biological Effects and Potential Hazards of Radiofrequency
Electromagnetic Fields."  This is the fourth edition of OET Bulletin 56, first issued in the early 1980's. 
The bulletin provides updated information to the public and others on the topic of potential biological
effects and hazards of radiofrequency (RF) energy.  In 1996, as a result of its responsibilities under
the National Environmental Policy Act, the Commission adopted revised guidelines for human
exposure to RF emissions from FCC-regulated transmitters. The Commission's guidelines are
discussed in this bulletin as are other relevant topics such as scientific research  in this area.   A list
of references and related Internet Web sites is also provided. 

The new version of OET Bulletin 56 is available at the FCC's Internet Web site 
(www.fcc.gov/oet/rfsafety).  Copies can also be requested from the Office of Engineering and
Technology's RF safety program: (202) 418-2464; via e-mail from: rfsafety@fcc.gov; or from the
FCC's Call Center, 1-888 CALL FCC (1-888-225-5322). 


                             - FCC -