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Section 4A: Safety Guidelines 189
physician or the manufacturer of the medical device to determine if they are
adequately shielded from external RF energy or if you have any questions. Switch off
your phone in health care facilities when any regulations posted in these areas
instruct you to do so. Hospitals or health care facilities may be using equipment that
could be sensitive to external RF energy
Pacemakers
Pacemaker manufacturers recommend a distance of 15.3 cm be maintained
between a hand-held wireless phone and a pacemaker to avoid interference with
the pacemaker. These recommendations are consistent with independent research
and recommendations of Wireless Technology Research.
Persons with pacemakers:
ⅷ Should always keep the phone at least 15.3 cm from their pacemaker when
the phone is turned on
ⅷ Should not carry the phone in a breast pocket
ⅷ Should use the ear opposite the pacemaker to minimize the potential for
interference
ⅷ Should turn off the phone immediately if there is any reason to suspect that
interference is taking place
Using Your Phone Near Other Electronic Devices
Most modern electronic equipment is shielded from radiofrequency (RF) signals.
However, RF signals from wireless phones may affect inadequately shielded
electronic equipment.
RF signals may affect improperly installed or inadequately shielded electronic
operating systems and/or entertainment systems in motor vehicles. Check with the
manufacturer or their representative to determine if these systems are adequately
shielded from external RF signals. Also check with the manufacturer regarding any
equipment that has been added to your vehicle.
Consult the manufacturer of any personal medical devices, such as pacemakers and
hearing aids, to determine if they are adequately shielded from external RF signals.
Turning Off Your Phone Before Flying
Turn off your phone before boarding any aircraft. To prevent possible interference
with aircraft systems, the U.S. Federal Aviation Administration (FAA) regulations
require you to have permission from a crew member to use your phone while the
plane is on the ground. To prevent any risk of interference, FCC regulations prohibit
using your phone while the plane is in the air.
Turning Off Your Phone in Dangerous Areas
To avoid interfering with blasting operations, turn your phone off when in a blasting
area or in other areas with signs indicating two-way radios should be turned off.
Construction crews often use remote-control RF devices to set off explosives.
Note:
Always turn off the phone in health care facilities and request permission before
using the phone near medical equipment.