38
UK
Recommended separation distances between portable and mobile RF communi-
cations equipment and the Model PG-800B18
The Model PG-800B18 is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the Model
PG-800B18 can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters)
and the Model PG-800B18 as recommended below, according to the maximum output
power of the communications equipment.
Rated maxi-
mum output of
transmitter W
Separation distance according to frequency of transmitter m
150 kHz to 80
MHz outside
ISM bands
150 kHz to 80
MHz in ISM
bands
80 MHz to
800MHz
800 MHz to 2,7
GHz
0.01
0.12
0.12
0.12
0.23
0.1
0.38
0.38
0.38
0.73
1
1.2
1.2
1.2
2.3
10
3.8
3.8
3.8
7.27
100
12
12
12
23
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 The ISM (industrial, scientific and medical) bands between 0,15 MHz and 80
MHz are 6,765 MHz to 6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283
MHz; and 40,66 MHz to 40,70 MHz. The amateur radio bands between 0, 15 MHz and
80 MHz are 1,8 MHz to 2,0 MHz, 3,5 MHz to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to
7,3 MHz, 10,1 MHz to 10,15 MHz, 14 MHz to 14,2 MHz, 18,07 MHz to 18,17 MHz, 21,0
MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz, 28,0 MHz to 29,7 MHz and 50,0 MHz to
54,0 MHz.
NOTE 3 An additional factor of 10/3 has been incorporated into the formulae used in
calculating the recommended separation distance for transmitters in the ISM frequency
bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2,7 GHz to
decrease the likelihood that mobile/portable communications equipment could cause
interference if it is inadvertently brought into patient areas.
NOTE 4 These guidelines may not apply in all situations. Electromagnetic propagation
is affected by absorption and reflection from structures, objects and people.
