• 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
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 this device.
• Over the frequency range 150 kHz to 80 MHz, field strengths should be
less than 3 V/m.
19
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 affected by absorption and reflection from
structures, objects and people.
Recommended separation distances between portable and mobile RF
communications equipment and the device – for device that is not
LIFE-SUPPORTING
Recommended separation distances between portable and mobile RF
communications equipment and the device
The device is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user
of the device can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the device as recommend-
ed below, according to the maximum output power of the communica-
tions equipment.
