AS 50
V. 1.2, 26.11.2009
19
12.6.
Recommended protective distance between portable and mobile HF-
telecommunication devices and the laser device without life supporting function
Recommended protective distance between portable and mobile HF-telecommunication devices and the
laser device
The laser device is designed for the operation in electromagnetic ambient conditions where HF-disturbance
variables are controlled. Client or user of the laser device can help to avoid electromagnetic disturbances by
keeping the minimum distance between portable and mobile HF-telecommunication devices (transmitters) and the
laser device as indicated below, dependent on the power output of the communication device.
Power rating of the
transmitter
W
Protective distance dependent on the transmitting frequency
m
150 kHz up to 80 MHz
d = 1,2
√
P
80 MHz up to 800 MHz
d = 1,2
√
P
800 MHz up to 2,5 GHz
d = 2,3
√
P
0,01
0,12 0,12 0,23
0,1
0,38 0,38 0,73
1
1,2 1,2 2,3
10
3,8 3,8 7,3
100 12
12
23
If the maximum power rating for certain transmitters is not given in the above table the recommended protective
distance d in metres (m) can be determined by using the equation indicated in the respective column, where P is
the maximum power rating of the transmitter in Watt (W) according to the manufacturer of the transmitter.
Note 1 At 80 MHz and 800 MHz the higher frequency range is applied
Note 2 These guidelines are not applicable in all cases. The propagation of electromagnetic quantities is
influenced by the absorption and reflection of buildings, items and human beings.
