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Safety Guidelines
85
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
energy (RF) 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 tissuesimulating 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. 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 phone will reduce RF exposure.
If you must conduct extended conversations by
wireless phone 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
phone away from your body or use a wireless
phone connected to a remote antenna. Again,
the scientific data do not demonstrate that
wireless phones are harmful. But if you are
concerned about the RF exposure from these
products, you can use measures like those
described above to reduce your RF exposure
from wireless phone use.
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