Portable and mobile RF communications
equipment should be used no closer to any part
of the VX22, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Recommended separation distance
d=1,17√P
d=1,17√P 80 MHz to 800 MHz
d=2,33√P 800 MHz to 2,5 GHz
where P is the maximum output power rating of
the transmitter in watts (W) according to the
manufacturer and d is the recommended
separation distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
a
,
should be less than the compliance level in each
frequency range
b
.
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 solutions. Electromagnetic propagation is affected by
absorption and reflection form structures, objects and people.
a
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 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 VX22 is used exceeds
the applicable RF compliance level above, the VX22 should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating
the VX22.
b
Over the frequency range 150 kHz à 80 MHz, field strengths should be less than 3 V/m.
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