Technical data
71
Recommended separation distances between portable and mobile RF
communications equipment and the SONNET – for equipment and systems that
are not life-supporting
The SONNET is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the SONNET can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the SONNET 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
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
7.39
100
11.70
11.70
23.30
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in
metres (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.
