I guess questions like this are peripherally relevant to the world of computing whether commercial or domestic. The simple answer is : after over 60 years of research first initiated when radar became common during WW2, the jury is still out. There is little if any reproducible evidence to show that EMF waves of any frequency can be harmful except, of course, high intensity millimetric waves used in radar and microwave ovens. Then there are very few people I know of who would willingly put their heads or hands inside a microwave, cheat the override switch and then turn it on to "see how it feels". Workers in and around EMF fields whether these be from very low power x-ray machines, radar units, nuclear reactors, accelerators and so on, wear radiation badges which are analyzed regularly to ensure that the wearer has not been exposed to any harmful radiation. With the proliferation of radio for so many things, we are surrounded and swamped by EMF radiation wherever we go : it is far more damaging for your health to fly, for instance, from Ottawa to Toronto than is is to be near any microwave transmitter for use such as wireless Internet, cell phones, remote control and suchlike. Radio transmission for audio and video has been with us since the early 1930s : have you ever read anywhere of an increase in death rate from even living right below a transmission tower? Try looking on web sites such as the CNA's to find out the real story about EMF health risks. I lived directly under an active 250 kV, 50 Hz power line for a long time and there were absolutely NO effects from so doing. My daughters were born at home right under those lines and they are healthy middle-aged women now. Rest assured, there are no health hazards involved. There is more danger from lying next to one's wife in bed or viewing TV in ones basement (where the radiation is not from the TV but from merely being in the basement) than from EMF radiation (except, of course, high power radar units, but they are usually well away from residential areas and are highly shielded against radiation from stray lobes in the antenna emission pattern. CroombeFP