22
NOTE 1 At 80 MHz - 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.
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 is used exceeds the
applicable RF compliance level above, the model should be observed to verify
normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the model.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than
3V/m.
Recommended separation distances between
portable and mobile RF communications equipment and the model
The model is intended for use in electromagnetic environment in which radiated
RF disturbances is controlled. The customer or the user of the model can help
prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and
the model is recommended below, according to the maximum output power of
the communications equipment.
Rated maximum
output power
of transmitter
W
Separation distance according to frequency of transmitter
m
150kHz to 80MHz
d=1.2×P
1/2
80MHz to 800MHz
d=1.2×P
1/2
800MHz to
2,7GHz
d=2.3×P
1/2
0,01
0.12
0.12
0.23
0,1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the
recommended separation distance d in meters (m) can be estimated using the
equation applicable to the frequency of the transmitter, where P is the maximum
output power rating of the transmitter in watts (W) accordable to the transmitter
manufacture.
NOTE I At 80 MHz - 800 MHz, the separation distance for the higher frequency
rane applies.
NOTE II These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects and
people.
Summary of Contents for AP-A
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