86
87
Table 4
Recommended separation distances between portable and mobile RF communications
equipment and device
The device is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of device can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and device, as 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
0.15 MHz to
80 MHz
d = 1.2√P
80 MHz to
800 MHz
d = 1.2√P
800 MHz to
2.7 GHz
d = 2.3√P
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) according to the transmitter manufacturer
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.
