Safety
95
Safety
the National Council on Radiation
Protection and Measurement.
The exposure limit takes into
consideration the body’s ability
to remove heat from the tissues
that absorb energy from the
wireless phone and is set well
below levels known to have
effects. Manufacturers of
wireless phones must report the
RF exposure level for each model
of phone to the FCC. The FCC
website (http://www.fcc.gov/
oet/rfsafety) gives directions for
locating the FCC identification
number on your phone so
you can find your phone’s RF
exposure level in the online
listing.
8. What has the FDA done to
measure the Radio Frequency
energy coming from wireless
phones?
The Institute of Electrical and
Electronic Engineers (IEEE) is
developing a technical standard
for measuring the Radio
Frequency (RF) energy exposure
from wireless phones and other
wireless handsets with the
participation and leadership of
FDA scientists and engineers.
The standard, “Recommended
Practice for Determining
the Spatial-Peak Specific
Absorption Rate (SAR) in the
Human Body Due to Wireless
Communications Devices:
Experimental Techniques”, sets
forth the first consistent test
methodology for measuring the
rate at which RF is deposited
in the heads of wireless phone
users. The test method uses
a tissue-simulating model of
the human head. Standardized
SAR test methodology is
expected to greatly improve the
consistency of measurements
made at different laboratories
on the same phone. SAR is the
measurement of the amount of
energy absorbed in tissue, either
by the whole body or a small
part of the body. It is measured
in watts/kg (or milliwatts/g) of
matter. This measurement is
used to determine whether a
wireless phone complies with
safety guidelines.
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