TABLE 4: RECOMMENDED SPACING BETWEEN A PORTABLE AND
MOBILE COMMUNICATION APPLIANCE AND THE COMPEX WIRELESS USA
The Compex Wireless USA is designed for use in an electromagnetic environment in which radiated
RF waves are controlled� The buyer or user of the Compex Wireless USA can contribute to preventing
electromagnetic interference by maintaining a minimum distance between RF portable and mobile
communication appliances (transmitters) and the Compex Wireless USA according to the table of
recommendations below and according to the maximum output power of the telecommunication appliance�
MAXIMUM TRANSMITTER
OUTPUT POWER
W
SPACING ACCORDING TO THE FREQUENCY OF THE
TRANSMITTER M CISPR 11
FROM 150 KHZ
TO 80 MHZ
D = 1�2√P
FROM 80 MHZ
TO 800 MHZ
D = 4√P
FROM 800 MHZ
TO 2�5 GHZ
D = 6�7√P
0�01 0�12 0�4 0�67
0�1 0�38 1�26 2�11
1 1�2 4 6�7
10 3�8 12�6 21�1
100 12 40 67
In the case of whose maximum output power is not shown in the table above, the recommended spacing of
d meters (m) can be calculated using the appropriate equation for the transmitter frequency, where P is the
maximum output power of the transmitter in watts (W) as set by the transmitter manufacturer�
Note 1: At 80 MHz and at 800 MHz, the spacing for high frequency amplitude is applied�
Note 2: These guidelines may not be appropriate for some situations� Electromagnetic wave propagation is
modified by absorption and reflection due to buildings, objects, and persons�
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