Hitachi SH-G1000 User Manual

Page of 264
237
4A: Safety
Occupational Safety and Health Administration 
National Telecommunications and Information Administration 
The National Institutes of Health participates in some interagency 
working group activities, as well.
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. FCC relies on FDA and other health agencies for safety 
questions about wireless phones.
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 primary subject 
of the safety questions discussed in this document.
18. What kinds of phones are the subject of this update?
The term “wireless phone” refers here to hand-held 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 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 telephone wiring in a house, 
typically operate at far lower power levels, and thus produce RF exposures 
well within the FCC’s compliance limits.
19. What are the results of the research done already?
The research done thus far has produced conflicting results, and many 
studies have suffered from flaws in their research methods. Animal 
experiments investigating the effects of radiofrequency energy (RF) 
exposures characteristic of wireless phones have yielded conflicting