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Recommended Separation Distances between Portable and Mobile RF
Communications Equipment and the DS-7100 System
The DS-7100 system is intended for use in an environment in which radiated RF disturbances are
controlled. The electromagnetic interference can be prevented by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the DS-7100 system 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
）
26MHz
〜
80MHz
d = 1.2
P
80MHz
〜
800MHz
d = 1.2
P
800MHz
〜
1GHz
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 meters (m) can be determined 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 80MHz and 800MHz, 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.
