User's Manual

3
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.
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