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Recommended separation distances between portable and mobile
RF communications equipment and the TH8xyz series
The TH8xyz series is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the can TH8xyz series help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the TH8xyz series as recommended below, according
to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter
m
Rated maximum
output power of
transmitter
W
150 kHz to 80 MHz
d =
1.2
80 MHz to 800 MHz
d =
1.2
800 MHz to 2.7 GHz
d =
2.3
0.01
0.1
1
10
100
N/A
N/A
N/A
N/A
N/A
0.12
0.38
1.2
3.8
12
0.23
0.73
2.3
7.3
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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.
P
P
P
