Made in Germany
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29
Guidelines, Limiting and
Precautionary Values
The official regulations in many countries specify limits far beyond
the recommendations of environmentally oriented doctors, “building
biologists” and many scientific institutions and also those of other
countries. They are vehemently criticised, but they are nonetheless
“official”, and often the basis for authorization procedures. The limit
value is frequency-dependent and in the HF range of interest here
lies between 4 and 10 W/m² (1 W/m² = 1,000,000 μW/m²). It is
based on an average value evaluation, which building biologists
consider far too low. The same point of criticism also applies to the
official limit values of other countries, as well as of the ICNIRP (In-
ternational Commission on Non-Ionizing Radiation Protection) – the
so-called non-thermal effects of EMF are neglected. This is also
“officially” described in a commentary published by the Swiss Fed-
eral Office for Environment, Forest and Landscape dated Dec. 23,
1999. These “official” limits are far beyond the range of this instru-
ment, which is optimized for accurate measurement of power densi-
ties targeted by the building biologists.
The building biology guideline SBM 2015 classifies the following
steps:
Building biology guideline
acc. to SBM-2015
© Baubiologie Maes / IBN
Anomaly
none
slight
strong
extreme
(μW/m²)
< 0,1
0,1-10
10-1000
> 1000
The "Bund fuer Umwelt und Naturschutz Deutschland e. V." (BUND)
proposes 100 μW/m² outside buildings. In view of the shielding
properties of normal building materials, far lower values exist inside
buildings.
In February 2002 the Medical Authority of the Federal State of Salz-
burg, Austria, recommends to reduce its “Salzburger Precautionary
Recommendation” from 1,000 μW/m² to 1 μW/m² inside buildings
and 10 μW/m² outside. These limits are based on empirical evi-
dence over the past few years.
In summary it confirms the justification of precautionary limits
well below the present legal limits.
Users of mobile phones and Wifi please note:
Even at significant-
ly lower power flux densities than the strict values recommended by
the SBM for pulsed radiation, i.e. at values of approx. 0.01 μW/m²,
you will always have excellent
cell phone and wireless LAN recep-
tion.
Audio Analysis of Modulation
The audio analysis of the modulated portion of the HF signal helps
to identify the source of a given HF radiation signal. There is a se-
lection of audio samples on our homepage (high frequency meters).
