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The exposure standard for mobile phones
employs a unit of measurement known as the
Specific Absorption Rate, or SAR. The SAR
limit set by public authorities such as the
Federal Communications Commission of the
US Government (FCC), or by Industry Canada,
is 1.6 W/Kg averaged over 1 gram of body
tissue. Tests for SAR are conducted using
standard operating positions with the mobile
phone transmitting at its highest certified
power level in all tested frequency bands.
Although the SAR is determined at the highest
certified power level, the actual SAR level of
the mobile phone while operating can be well
below the maximum value. This is because the
mobile phone is designed to operate at multi-
ple power levels so as to use only the power
required to reach the network. In general,
the closer you are to a wireless base station
antenna, the lower the power output of the
mobile phone. Before a mobile phone model
is available for sale to the public, compliance
with national regulations and standards must
be shown.
The highest SAR value for this model mobile
phone when tested is 1.50 W/kg for use at the
ear and 1.37 W/kg for use close to the body.
While there may be differences between the
SAR levels of various mobile phones and at
various positions, they all meet the govern-
ment requirement for RF exposure. For
body-worn operation, the mobile phone meets
FCC RF exposure guidelines provided that it is
used with a non-metallic accessory with the
handset at least 10 mm from the body. Use of
other accessories may not ensure compliance
with FCC RF exposure guidelines.
Additional information on SAR can be found
on the Cellular Telecommunications & Internet
Association (CTIA) Web site: http://www.
phonefacts.net
The World Health Organization (WHO) consid-
ers that present scientific information does not
indicate the need for any special precautions
for use of mobile phones. If individuals are
concerned, they might choose to limit their
own or their children’s RF exposure by limit-
ing the length of calls, or using “hands-free”
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