Samsung SCH-a770 series, Руководство пользователя, Страница: 152 / 172

Usage guidelines: All about performance and safety
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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
wireless exposures that people get from these base stations
are typically thousands of times lower than those they get
from wireless phones. Base stations are thus not the subject
of the safety questions discussed in this document.
What kinds of phones are the subject of this
update?
The term “wireless phones” refers here to hand-held wireless
phones with built-in antennas, often called “cell,” “mobile,” or
“PCS”. These types of wireless phones can expose the user to
measurable radio frequency energy (RF) because of the short
distance between the phone and the user’s head.
These RF exposures are limited by Federal Communications
Commission safety guidelines that were developed with the
advice of 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 phone wiring in a house, typically
operate at far lower per levels, and thus produce RF
exposures far below the FCC safety limits.