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Safety Guidelines 110
The FDA belongs to an interagency working group of the federal agencies that
have responsibility for different aspects of RF safety to ensure coordinated efforts
at the federal level. The following agencies belong to this working group:
• National Institute for Occupational Safety and Health
• EnvironmentalProtectionAgency
• Occupational Safety and Health Administration (Administración de la seguridad
y salud laborales)
• Occupational Safety and Health Administration
• National Telecommunications and Information Administration
The National Institutes of Health participates in some interagency working group
activities, as well.
The FDA shares regulatory responsibilities for wireless phones with the Federal
Communications Commission (FCC). All phones that are sold in the United States
must comply with FCC safety guidelines that limit RF exposure. The FCC relies on
the FDA and other health agencies for safety questions about wireless phones.
The FCC also regulates the base stations that the wireless phone networks rely
upon. While these base stations operate at higher power than do the wireless
phones themselves, the RF exposures that people get from these base stations are
typically thousands of times lower than those they can get from wireless phones.
Base stations are thus not the subject of the safety questions discussed in this
document.
3. What kinds of phones are the subject of this update?
Theterm‘wirelessphone’refersheretohandheldwirelessphoneswithbuilt-in
antennas, often called ‘cell’, ‘mobile’, or ‘PCS’ phones. These types of wireless phones
can expose the user to measurable radiofrequency energy (RF) because of the
short distance between the phone and the user’s head. These RF exposures are
limited by FCC safety guidelines that were developed with the advice of the FDA
and other federal health and safety agencies. When the phone is located at greater
distances from the user, the exposure to RF is drastically lower because a person’s
RFexposuredecreasesrapidlywithincreasingdistancefromthesource.Theso-
called ‘cordless phones,’ which have a base unit connected to the telephone wiring in
a house, typically operate at far lower power levels, and thus produce RF exposures
far below the FCC safety limits.