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Recommended separation distances between portable and mobile RF
communications equipment and the TONO-PEN
The TONO-PEN VET is intended for use in the electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the TONO-PEN VET can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and
the TONO-PEN VET as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum power of
transmitter
W
Separation distance according to frequency of transmitter (meters)
150 kHz to
80 MHz
d = 1.2 √P
80 MHz to
800 MHz
d = 1.2 √P
800 MHz to
.5 GHz
d = 2.3 √P
0.01
0.1
0.1
0.3
0.1
0.38
0.38
0.3
1
1.
1.
.3
10
3.8
3.8
.3
100
1
1
3
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 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
Guidance & Manufacturer’s Declaration
