Gigahertz Solutions HF58B, Инструкция по эксплуатации

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© Gigahertz Solutions GmbH
Made in Germany
The shielding itself should be defined and surveyed by a specialist
and in any case the area covered by it should be much larger than
the leak.
Guidelines, Limiting and
Precautionary Values
The official regulations in many countries specify limits far beyond
the recommendations of environmentally oriented doctors, “build-
ing biologists” and many scientific institutions and also those of
other countries. They are vehemently criticised, but they are none-
theless “official”. The limits depend on frequencies and in the HF
range of interest here they are between 4 and 10 W/m², far beyond
10 million times the recommendations (1 W/m² = 1,000,000 µW/m²).
Official limits are determined by the potential heat generation in the
human body and consequently measurements of averages rather
than peaks. This ignores the state of environmental medicine. The
“official” limits are far beyond the range of this instrument, which is
optimized for accurate measurement of power densities targeted
by the building biologists.
The building biology guideline SBM 2015, widely accepted world-
wide, 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
Critical radio waves, such as pulsed or periodic signals (mobile
phones, DECT, WLAN, digital radio, etc.) should be considered
more damageable, especially when frequently measured, whereas
less critical radio waves, such as unpulsed or non periodic signals
(VHF, short wave, MW, LW, analogue radio, etc.) can be considered
less important, especially when less frequently measured.
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 Salzburg, 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 evidence over the past few years.
In summary it confirms the justification of precautionary limits
well below the present legal limits.
Note for users of cellular phones or Wifi:
Unimpaired reception of calls or Wifi is possible with power densi-
ties far below even the very strict precautionary recommendation
of 0.01 µW/m² for pulsed HF frequencies by the SBM.