Recommended separation distances between portable and mobile RF communications
equipment and the EMMA
EMMA is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of EMMA can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and EMMA as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
0.01 0.12 0.018 0.035
0.1 0.37 0.057 0.11
1 1.2 0.18 0.35
10 3.7 0.57 1.1
100 12 1.8 3.5
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 affected by
absorption and reflection from structures, objects and people.
Warning: Measurements can be affected by mobile phones and RF communications equipment. It
should be assured that EMMA is used in the electromagnetic environment specified.
29(32)
To Next Page
Loading...
