LG GW620g Guia Del Usuario página 105

The National Institutes of Health
participates in some interagency
working group activities, as well.
The FDA shares regulatory
responsibilities for wireless
phones with the Federal
Communications Commission
(FCC). All phones that are sold in
the United States must comply
with FCC safety guidelines that
limit RF exposure. The FCC relies
on the FDA and other health
agencies for safety questions
about wireless phones.
The FCC also regulates the base
stations that the wireless phone
networks rely upon. While these
base stations operate at higher
power than do the wireless
phones themselves, the RF
exposures that people get from
these base stations are typically
thousands of times lower than
those they can get from wireless
phones. Base stations are thus
not the subject of the safety
questions discussed in this
document.
3. What kinds of phones are the
subject of this update?
The term 'wireless phone' refers
here to handheld wireless
phones with built-in antennas,
often called 'cell' , 'mobile' , or 'PCS'
phones. These types of wireless
phones can expose the user
to measurable radiofrequency
energy (RF) because of the short
distance between the phone
and the user's head. These RF
exposures are limited by FCC
safety guidelines that were
developed with the advice of the
FDA and other federal health and
safety agencies. When the phone
is located at greater distances
from the user, the exposure to
RF is drastically lower because a
person's RF exposure decreases
rapidly with increasing distance
from the source. The so-called
'cordless phones, ' which have
a base unit connected to the
telephone wiring in a house,
typically operate at far lower
power levels, and thus produce
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