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Table 4
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
(transmittters) and the device as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum output
power of transmitter
(W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (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) according to the
transmitter manufacturer.
NOTE 1
At 80 MHz and 800 MHz, the separation distance for 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.
32
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 8
d
=
3.5
P
0.12
0.38
1.2
3.8
12
0 MHz to 800 MHz
d
=
1.2
P
0.12
0.38
1.2
3.8
12
800 MHz to 2.7 GHz
d
=
2.3
P
0.23
0.73
2.3
7.3
23
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