Engineers (IEEE) is developing a technical
standard for measuring the Radio
Frequency (RF) energy exposure from
wireless phones and other wireless phones
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.
9. What steps can I take to reduce my
exposure to Radio Frequency 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 Radio
Frequency (RF) energy. 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
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