a The ISM (industrial, scientific and medical) bands between 150kHz and 80MHz are 6.765MHz to
6.795MHz; 13.553MHz to 13.567MHz; 26.957MHz to 27.283MHz; and 40.66MHz to 40.70MHz.
b Establishing compliance levels for the ISM frequency band between 150 kHz and 80 MHz and for
the frequency range 80 MHz to 2.5 GHz is intended to reduce the possibility of causing interference
in the event that mobile/portable communications equipment is inadvertently introduced into animal
areas. For this reason, an additional factor of 10/3 is used when calculating the recommended
separation distances for transmitters in these frequency ranges.
c Field strengths from fixed transmitters such as wireless (cellular/cordless) telephones and land
mobile radios, amateur radios, AM and FM radio broadcasts and television broadcasts cannot be
theoretically predicted with precision. To assess the electromagnetic environment from fixed RF
transmitters, electromagnetic field measurements should be considered. If the field strength
measured at the system site exceeds the applicable RF compliance level above, the system should
be observed to ensure that it is operating properly. If abnormal conditions are found, additional
measures may need to be taken, such as changing the direction or location of the system.
Above the frequency range from 150kHz to 80MHz, the field strength should be less than 3V/m.
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