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: These guidelines may not apply in all situations.
Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
Separation distance according to
frequency of transmitter (m)
d = 1.2√P < 800
MHz
0.12
0.38
1.2
3.8
12
d = 2.3√P ≥ 800
MHz
0.23
0.73
2.3
7.3
23
25