50
Appendix
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 aected by absorption and reection
from structures, objects and people.
a. Field strengths from xed 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 xed RF transmitters, an electromagnetic site survey
should be considered. If the measured eld 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
reorienting or relocating the device.
b. Over the frequency range 150 kHz to 80 MHz, eld
strengths should be less than 10 V/m.
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