11.8 Safety distances
Further technical data are available from the manufacturer, Weinmann, on request or from
the hospital manual and in the Servicing and Repair instructions.
The right to make design modifications is reserved.
Recommended safety distances between portable HF telecommunication devices
(e.g. cellphone) and the therapy device
Nominal output of
HF device
in W
Safety distance depending on transmission frequency
in m
150 kHz - 80
MHz outside
ISM bands
150 kHz - 80
MHz within
ISM bands
80 MHz –
800 MHz
800 MHz –
2.5 GHz
0.01 0.04 0.12 0.12 0.23
0.1 0.11 0.38 0.38 0.73
1 0.35 1.20 1.20 2.30
10 1.10 3.80 3.80 7.27
100 3.50 12.00 12.00 23.00
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