6
SAFETY INFORMATION
Recommended separation distances between
portable and mobile RF communications equipment and the model
DR-22
The model DR-22 is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the model DR-22 can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the model DR-22 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
80 MHz to 800 MHz
d
= 1,2
800 MHz to 2,5 GHz
d
= 2,3
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.
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.
Summary of Contents for DR-22
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