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• US Food and Drug Administration:
http://www.fda.gov/Radiation-EmittingProducts/
RadiationEmittingProductsandProcedures/
HomeBusinessandEntertainment/CellPhones/default.htm
Specific Absorption Rate (SAR) Certification
Information
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 RF exposure limits are derived from the
recommendations of two expert organizations: the
National Council 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.
163
2C. Settings
The RF 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 SAR 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 reported 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 of the phone.
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