EMC Guidance and Manufacturer’s Declaration 16-5
TABLE 4
RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE AND MOBILE RF
COMMUNICATION DEVICE AND SYSTEM
The system is intended for use in an electromagnetic environment in which radiated RF disturbance
are controlled. The customer or the user of system can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communication equipment
(transmitters) and system as recommended below, according to the maximum output power of the
communication equipment.
Rated Maximum
Output power of
Transmitter
(W)
Separation Distance According to Frequency of Transmitter
(m)
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 at a maximum output power not listed above, the recommended separation
distanced in meters (m) can be determined using the formula 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.
If system image distortion occurs, it may be necessary to position system further from sources of
conducted RF noise or to install external power source filter to minimize RF noise to an acceptable
level.
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 human body.
