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Additional
Information
scientific evidence that adverse
health effects result from the use of
cellular/PCS telephones.
The Institute of Electrical and
Electronics Engineers (IEEE) in
1991, and The American National
Standards Institute (ANSI) in 1992,
updated the 1982 ANSI Standard
for safety levels with respect to
human exposure to RF energy.
Over 120 scientists, engineers, and
physicians from universities,
government health agencies, and
industry, reviewed the available
research and developed this
updated Standard. In March 1993,
the U.S. Federal Communications
Commission (FCC) proposed the
adoption of this updated Standard.
The design of your phone complies
with this updated Standard. Of
course, if you want to limit RF
exposure even further than the
updated ANSI Standard, you may
choose to control the duration of
your calls and operate your phone
in the most power efficient manner.
Efficient phone operation
For your phone to operate at the
lowest power level consistent with
satisfactory call quality, please
observe the following guidelines:
Your phone has an extendable
antenna; extend it fully whenever
possible for maximum efficiency.
Hold the phone as you would any
other telephone. While speaking
directly into the mouthpiece,
position the antenna up and over
your shoulder.
Do not hold the antenna when the
phone is in use. Holding the
antenna affects call quality and
may cause the phone to operate at
a higher power level than needed.
Safety Precautions
IMPORTANT
For safe and efficient
operation of your phone,
observe these guidelines.
Your dual band (analog/digital
CDMA) hand-held portable cellular/
PCS telephone uses both analog
frequency modulation (FM)
technology and digital Code Division
Multiple Access (CDMA) technology.
CDMA is a newer radio frequency
(RF) technology than the FM
technology that has been used for
radio communications for decades.
Your dual band portable cellular/
PCS telephone is a radio
transmitter and receiver. When the
phone is ON, it receives and sends
out radio frequency (RF) energy.
The phone operates in the
frequency range of 800 MHz in
analog mode and 1.9 GHz in digital
CDMA mode. When you use your
phone, the cellular/PCS system
handling your call controls the
mode of operation (analog or
digital CDMA) and the power level
at which your phone transmits. In
the analog mode, the power is
continuously transmitted at a level
that can range from about 6 mW to
about 600 mW. In the digital
CDMA mode, the power is
transmitted as a digitally coded
waveform at a rate varying from
100 Hz to 800 Hz. The average
power can range from about 0.01
µW to about 300 mW.
Exposure to radio
frequency energy
Research on health effects from RF
energy has focused for many years
on FM radio technology. That
research and studies regarding
newer radio technologies, such as
CDMA, have found no credible
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