User Manual

Appendix
153
Recommended Separation Distances Between Portable and Mobile RF Communications Equipment
and the System
You can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communi-
cations equipment (transmitters) and the System, as recommended below, according to the maximum output power of the com-
munications equipment.
Rated maximum output power
of transmitter, in watts
Separation distance according to frequency of transmitter, in meters
150 kHz to 80 MHz, d = 1.17 √ P 80 MHz to 800 MHz, d = 0.35 √ P 800 MHz to 2.5 GHz, d = 0.7 √ P
0.01 0.12 0.035 0.070
0.1 0.37 0.11 0.22
1 1.17 0.35 0.7
10 3.70 1.11 2.21
100 11.7 3.5 7.0
For transmitters rated at a maximum output power not listed above, the recommended separation distances in meters (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 struc-
tures, objects, and people.