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105
Safety
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 for
wireless mobile phones employs
a unit of measurement known as
the Specific Absorption Rate, or
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.
Tests for SAR are conducted
using standard operating
positions specified by the FCC
with the phone transmitting at its
highest certified power level in all
tested frequency bands.
Although 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. Because the
phone is designed to operate at
multiple power levels to use only