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Recommended separation distances between portable and mobile RF communications equipment
and the C-Series Tango system
The C-Series Tango system is intended for use in an environment in which radiated RF disturbances are
controlled. The customer or the user of the C-Series Tango system can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the C-Series Tango system as recommended below, according to the maximum output power of the
communications equipment.
Separation distance according to frequency of transmitter (m)
Rated maximum output
power of transmitter W
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 0.17 0.04 0.07
0.1 0.37 0.1
1 0.22
1 1.17 0.35 0.7
10 3.69 1.11 2.2
1
100 11.70 3.50 7.0
For transmit
ters rated at a maximum output power not listed above, the recommended separation distance d in
metres (m) can be determined 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.
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