21
Recommended
separation
distance
between
portable
and
mobile
RF
communications
equipment
and
the device(s)
The device(s) is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the device(s) can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the device(s) 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
150
kHz
to
80
MHz
d =1,2
√𝑃
80
MHz
to
800
MHz
d =1,2
√𝑃
800
MHz
to
2,5
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 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.
NOTE1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.