Recommended Separation Distances Between Portable and Mobile RF Communications
Equipment and the System Console
The excel HR is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or user of the excel HR can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the
system console as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum output
power (W) of transmitter
Separation distance (m) according to frequency of transmitter
150 kHz to 80 MHz
d = 1.17 √P
80 MHz to 800 MHz
d = 1.17 √P
800 MHz to 2.5 GHz
d= 2.33 √P
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.17 1.17 2.33
10 3.70 3.70 7.37
100 11.70 11.70 23.30
For transmitters rated at a maximum output power not listed above,
the recommended separation distance (d)
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 af
fected by
absorption and reflection from structures, objects, and people.
65
EXCEL HR OPERATOR MANUAL
D1796, REV. D, 12/16
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