What recent scientific studies have been completed on possible biological effects and what have they found?
A list of current and completed studies on TETRA can be found on our Science pages, Brief summaries of those that relate to potential biological effects, and some more general RF studies and reviews on biological effects are summarised below. A double blind provocation study, using both GSM and TETRA signals, was undertaken by a team at the University of Sheffield led by Professor Tony Barker. The study investigated whether exposure to the signals caused changes in heart rate or blood pressure and also measured levels of adrenaline in the bloodstream, Neither changes in heart rate and blood pressure nor in blood chemistry were observed as a result of exposure. The work was published in Bioelectromagnetics 2007 28(6):433-438. The biomedical sciences department of the Defence Science and Technology Laboratories (DSTL) completed an investigation of the effects of TETRA signals on cellular calcium. As well as reproducing the maximum exposure that can arise from TETRA handsets, the research
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