Hi Shaun, thanks for your response , I'm still pulling together questions which I want to address in a consultation.

I'm having some difficulty sharing with my son the importance of the issue of bringing the level of exposure to EMF down as the meter and the filters indicate, the issue is complex, though I'm a service radioman I am trying to provide a source of information, perhaps several papers which are clear on the issue since this is a fairly new issue to him. Also I remember reading a paper maybe written by Dave which described the meter's theory so that i can relate it's reading to real world conditions, can you site that article? Sincerely, Mark