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Recommended separation distances between portable
and mobile RF communications equipment and the system
This system is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of this system can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and this system 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 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 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.
NOTE 3: Do not use cables or parts other than those intended for this product.
If cables or parts other than those intended for this product are used, performance
related to recommended separation distances may deteriorate.
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
d
=
1
2 .
P
0.12
0.38
1.2
3.8
12
No. 2B771-004EN*M
25-4
m
80 MHz to 800 MHz
d
=
1
2 .
P
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
d
=
2
3 .
P
0.23
0.73
2.3
7.3
23
*
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