42
ALMAG+
The
fi
eld density in the propaga on of radio waves from sta onary radio transmit-ters, such as base sta ons
of radio telephone networks (cellular / wireless), and surface-mobile radios, amateur radio sta ons, AM
and FM broadcast transmi ers, television transmi ers can not be determined by calcula on with su
ffi
cient
accuracy. This requires prac cal measurements of
fi
eld density. If the measured values at the loca on of
the device exceed the applicable levels of compliance, the opera on of the device should be monitored to
verify their normal func oning. If a devia on from normal func oning is detected during the observa on
process, then it may be necessary to take addi onal measures, such as reorien ng or moving the device.
Field density should be less than 3 V/m out of band from 150 kHz to 80 MHz.
Notes:
1 A greater value of the
fi
eld density is applied at frequencies of 80 and 800 MHz.
2 The expressions are not applicable in all the cases. The propaga on of electromagne c waves is a
ff
ected by absorp-
on or re
fl
ec on from structures, objects and people.
a)
b)
Summary of Contents for ALMAG+
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