Japan’s mobile phone operators, NTT DoCoMo, KDDI Corporation, J-PHONE and TU-KA Cellular Tokyo, have agreed to conduct a joint study on the possible biological effects of exposure to radio waves from mobile phone systems.
According to the agreement, the four companies will analyse and evaluate the results of experiments performed independently or jointly.
According to NTT DoCoMo, organisations such as the World Health Organisation (WHO) generally agree there is no scientific evidence proving that radio waves from cellular phones and base stations have any effect on people. However, WHO has been calling for research to substantiate the safety of these waves.
The companies will initially study preliminary research currently being carried out by DoCoMo, which aims to examine the effects of radio waves at the cellular and genetic level. Actual experimentation has been commissioned to Mitsubishi Chemical Safety Institute Ltd., which has extensive experience in safety tests using cell cultures and microorganisms.
The in vitro exposure system, or radio emission system, that will be used in the cell-culture experiments features a horn antenna and dielectric lens that creates a wide and homogeneous electric field with a deviation of less than 1.5 dB over an area of 30 cm2. The system will be able to simultaneously radiate 1 million cells contained in about 50 4cm-diameter petri dishes.
The four companies will publish results of the study after evaluation and analysis of test results.