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8. What has the FDA done to measure the radiofrequency
energy coming from wireless devices?
The Institute of Electrical and Electronic Engineers (IEEE)
is developing a technical standard for measuring the
radiofrequency energy (RF) exposure from wireless devices
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 device 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 device. 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 device complies with safety
guidelines.
9. What steps can I take to reduce my exposure to
radiofrequency energy from my wireless device?
If there is a risk from these products - and at this point we
do not know that there is - it is probably very small. But 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 exposure a person receives, reducing the amount of
time spent using a wireless device will reduce RF exposure.
If you must conduct extended conversations by wireless
device every day, you could place more distance between
your body and the source of the RF, since the exposure
level drops off dramatically with distance. For example, you
could use a headset and carry the wireless device away from
your body or use a wireless device connected to a remote
antenna. Again, the scientific data does not demonstrate
that wireless devices are harmful. But if you are concerned
about the RF exposure from these products, you can use
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