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28
SPECIFICATIONS
Recommended separation distance between
portable and mobile RF communications equipment and the OM-4
The OM-4 is intended for use in an electromagnetic environment in which radiated RF distur-
bances are controlled. The customer or the user of the OM-4 can help prevent electromag-
netic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the OM-4 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
150kHz to 80MHz
d = 1.2
80MHz to 800MHz
d = 1.2
800MHz to 2.5GHz
d = 2.3
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
11.21.22.3
10 3.8 3.8 7.3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended sepa-
ration distance d in meters (m) can be estimated using the equation applicable to the fre-
quency of the transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
NOTE 1
NOTE 2
At 80 MHz and 800 MHz, the separation distance for the higher frequency range
applies.
These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
P
P
P
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