Retevis RT639 Mode D'emploi page 9

RF Exposure Information
•DO NOT operate the radio without a proper antenna
attached, as this may damage the radio and may also
cause you to exceed RF exposure limits. A proper antenna
is the antenna supplied with this radio by the manufacturer
or an antenna specifically authorized by the manufacturer
for use with this radio, and the antenna gain shall not
exceed the specified gain by the manufacturer declared.
•DO NOT transmit for more than 50% of total radio use
time, more than 50% of the time can cause RF exposure
compliance requirements to be exceeded.
•During transmissions, your radio generates RF energy that
can possibly cause interference with other devices or
systems. To avoid such interference, turn off the radio in
areas where signs are posted to do so.•DO NOT operate
the transmitter in areas that are sensitive to
electromagnetic radiation such as hospitals, aircraft, and
blasting sites.
•Portable Device, this transmitter may operate with the
antenna(s) documented in this filing in Push-to-Talk and
body-worn configurations. RF exposure compliance is
limited to the specific belt-clip and accessory configurations
as documented in this filing and the separation distance
between user and the device or its antenna shall be at least
2.5 cm.
•Mobile Device, during operation, the separation distance
between user and the antenna subjects to actual
regulations, this separation distance will ensure that there is
sufficient distance from a properly installed
externally-mounted antenna to satisfy the RF exposure
requirements.
•Occupational/Controlled Radio, this radio is designed for
and classified as "Occupational/Controlled Use Only",
meaning it must be used only during the course of
employment by individuals aware of the hazards, and the
ways to minimize such hazards; NOT intended for use in a
General population/uncontrolled environment.
•General population/uncontrolled Radio, this radio is
designed for and classified as "General
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