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8. What has FDA done to measure radiofrequency
energy coming from wireless phones ?
The Institute of Electrical and Electronic Engineers
(IEEE) is developing a technical standard for meas-
uring the radiofrequency energy (RF) exposure from
wireless phones and other wireless handsets with
the participation and leadership of FDA scientists
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.
9. What steps can I take to reduce my exposure to
radiofrequency energy from my wireless phone?
If there is a risk from these products--and at this point
we do not know that there is--it is probably very
small. If you are concerned about avoiding even
potential risks, you can take a few simple steps to
minimize your exposure to radiofrequency energy
(RF). Since time is a key factor in how much expo-
sure a person receives, reducing the amount of time
spent using a wireless phone reduces RF exposure.
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7. How can I find out how much radiofrequency
energy exposure I can get by using my wireless
phone?
All phones sold in the United States must comply
with Federal Communications Commission (FCC)
guidelines that limit radiofrequency energy (RF)
exposures. FCC established these guidelines in con-
sultation with FDA and the other federal health and
safety agencies.The FCC limit for RF exposure from
wireless telephones is set at a Specific Absorption
Rate (SAR) of 1.6 watts per kilogram (1.6 W/kg).The
FCC limit is consistent with the safety standards
developed by the Institute of Electrical and Electronic
Engineering (IEEE) and the National Council on
Radiation Protection and Measurement. The expo-
sure 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.
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Chapter 6
Safety Guidelines