Fukuda Denshi IB-7300, Service Manual

Page: 13 / 146

Recommended Separation Distances between Portable and Mobile RF
Communications Equipment and the DS-7300 System
The DS-7300 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-7300 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
）
150kHz
～
80MHz
d = 1.2
P
80MHz
～
800MHz
d = 1.2
P
800MHz
～
2.5GHz
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.
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