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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 sub-
ject 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 Radio
Frequency (RF) energy
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 RF
exposures far below the
FCC safety limits.
29
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