Study type: Medical/biological study (experimental study)

In vitro effects of GSM modulated radiofrequency fields on human immune cells med./bio.

Published in: Bioelectromagnetics 2006; 27 (3): 188-196

Aim of study (acc. to author)

To assess whether GSM modulated radiofrequency fields have adverse effects on the functional immune competence of human immune cells.

Background/further details

The study is part of the project "Biological effects of high frequency electromagnetic fields (EMF)" sponsored by the National Occupation Hazard Insurance Association (AUVA).



Exposure Parameters
Exposure 1: 1,950 MHz
Modulation type: pulsed
Exposure duration: intermittent, 5 min on/10 min off for 8 h
  • SAR: 1 mW/g unspecified

Exposure 1

Main characteristics
Frequency 1,950 MHz
  • guided field
Exposure duration intermittent, 5 min on/10 min off for 8 h
Modulation type pulsed
Additional info

GSM basic

Exposure setup
Exposure source
Chamber Two R18 hollow rectangular waveguides (131 mm x 65 mm x 425 mm) operating in TE10 mode were used with a removable short cut making them a resonating cavity. They were equipped with ventilation holes, a fan and several sensors. Data from all sensors (field strength, air temperature, fan driving current) were collected every 10 s in a data logger also controlling the GSM frame unit and the RF switch. The whole setup with dimensions of approx. 50 x 25 x 45 cm³ was placed in a CO2 incubator.
Setup Six 35 mm Petri dishes fixed in two holders were placed in each waveguide, and in the H-field maxima being separated by 106 mm. The amplified RF signal was connected to one of the waveguide cavities by a computer-controlled switch enabling a double-blind study design.
Measurand Value Type Method Mass Remarks
SAR 1 mW/g unspecified measured and calculated - -

Reference articles

  • Schuderer J et al. (2004): High Peak SAR Exposure Unit With Tight Exposure and Environmental Control for In Vitro Experiments at 1800 MHz

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

No statistically significant effects of exposure were found. There is no indication that emissions from mobile phones are associated with adverse effects on the human immune system.

Study character:

Study funded by

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