Recommended Separation Distances:
Recommended separation distance between portable and mobile RF communications
equipment and the CHECKY
The CHECKY is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the CHECKY can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the CHECKY as recommended
below, according to the maximum output power of the communications equipment.
Rated maxi-
mum output
power of trans-
mitter (W)
0.01
0.1
1
10
100
For transmitters 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.
Note1:At 80MHz and 800MHz, the separation distance for the higher frequency range
applies
Note2:These guidelines may not apply in all situations. Electromagnetic propagation is af-
fected by absorption and reflection from structures, objects and people.
Separation distance according to frequency of transmitter m
150 kHz to 80 MHz
×p
d = 1.2
1/2
0.12
0.38
1.2
3.8
12
80 MHz to 800
MHz
d = 1.2×p
1/2
0.12
0.38
1.2
3.8
12
118
800 MHz to
2.5 GHz
×p
d = 2.3
1/2
0.23
0.73
2.3
7.3
23