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 the Model 170 Audiometer is used exceeds the
applicable RF compliance level above, the Model 170 Audiometer
should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary,
such as re-orienting or relocating the Model 170 Audiometer.
b Over the frequency range 150 kHz to 80 MHz, field strengths should
be less than 3 V/m.
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