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29
Radiated RF
IEC 61000-4-3 3 V/m
80 MHz to 2.5
GHz
20V/m Portable and mobile RF
communications
equipment should be
used no closer to any part
of the device than the
recommended separation
distance calculated from
the equation applicable
to the frequency of the
transmitter.
Recommended
separation distance
80 MHz to 800 MHz
800 MHz to 2.5 GHz
where is the maximum
output power rating of the
transmitter in watts (W)
according to the
transmitter manufacturer
and is the recommended
separation distance in
meters (m).
Field strengths from
fixed RF transmitters, as
determined by an
electromagnetic site
survey1, should be less
than the compliance level
in each frequency range.
Interference may occur in
the vicinity of equipment
marked with the following
symbol:
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects, and people.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the device is used exceeds
the applicable RF compliance level above, the device should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such
as re-orienting or relocating the device.
Appendix A: EMC Information