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14.4 Recommended separation distances between portable and
mobile RF communications equipment and the equipment
150kHz～80MHz
d=1.2 P
80MH～800MHz
d=1.2 P
800MHz～2.0GHz
d=2.3
P
Recommended separation distances between portable
and mobile RF communications equipment and
the equipment
The equipment is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of
the equipment can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications
equipment and the equipment as recommended below, according to
maximum output power of the communication equipement.
For transmitters rated at a maximum output power not listed above, the
recommended separation distance d in metres 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 according to
the transmitter manufacturer.
Note 1：At 80MHz and 800MHz, 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.
Rated
maximum
output
power of
transmitter W
Separation distance according to frequency of transmitter/m
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
3.8
100
12
12
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