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
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 system is used exceeds the applicable RF compliance level above,
system should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the
system.
b Over the frequency range 150kHz to 80MHz, field strengths should be less than
3V/m.