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Exposure to Radio Frequency (RF)
Signals
Certification Information (SAR)
Your wireless phone is a radio transmitter and
receiver. It is designed and manufactured not to
exceed the exposure limits for radio frequency
(RF) energy set by the Federal Communications
Commission (FCC) of the U.S. government.
These FCC exposure limits are derived from the
recommendations of two expert organizations,
the National Counsel on Radiation Protection and
Measurement (NCRP) and the Institute of
Electrical and Electronics Engineers (IEEE). In
both cases, the recommendations were
developed by scientific and engineering experts
drawn from industry, government, and academia
after extensive reviews of the scientific literature
related to the biological effects of RF energy.
The exposure limit set by the FCC for wireless
mobile phones employs a unit of measurement
known as the Specific Absorption Rate (SAR).
The SAR is a measure of the rate of absorption
of RF energy by the human body expressed in
units of watts per kilogram (W/kg). The FCC
requires wireless phones to comply with a safety
limit of 1.6 watts per kilogram (1.6 W/kg). The
FCC exposure limit incorporates a substantial
margin of safety to give additional protection to
the public and to account for any variations in
measurements.
SAR tests are conducted using standard
operating positions accepted by the FCC with the
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 phone while
operating can be well below the maximum value.
This is because the phone is designed to operate
at multiple 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.
Summary of Contents for SCH-W299
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