Chris, On the topic of RF exposure, I will throw in my two pennies.
Years ago, I was interested in the topic of frequency jamming of radio stations. I thought it would be interesting to build a frequency jamming device that would cause home radios to stop working. I built a random noise generator that produced noise in the frequency range of 100Hz to about 1MHz. I used the noise generator to drive a loop antenna (2 ft diameter) with a max current of 2.5A. The device worked very well in stopping AM radios from receiving the broadcast when I bring the loop close to any AM radio receiver. But as I was waving the loop in the air with my arm, I felt sever dizziness and a slight headache whenever the loop came close to my head. And I felt a difficulty in breathing when I placed the loop next to my chest. These are completely unmistakable feelings in the way that as I moved the antenna 3 feet away from my body, immediately, the feeling was gone. The effects were very repeatable and the symptoms were immediate (within a few seconds). I knew ! this was not a thermal effect because the frequencies were way too low. I just knew that the fields were causing my organs to "malfunction." After that, I stopped using the device. I don't think you can attribute this to any coincidence. George Tang From: [email protected] [mailto:[email protected]] On Behalf Of Chris Wells Sent: Wednesday, July 30, 2008 6:26 PM To: Oscar Overton Cc: [email protected]; [email protected] Subject: Re: RF What-if (was: RE: Another Cancer Scare?) Oscar - I spend a lot of time debugging systems and separating coincidence >from cause so I appreciate your skeptic stance. I would agree that it was not a controlled experiment but it was my experience that I wanted to share. My exposure was over a good part of a month and my flu like symptoms happened at the exposure time and stopped ~ 4hrs+ later after leaving the area. I would estimate ~ 15 exposures events over that month and then many months before and after without any problems. As a result of my experience I am being cautious, limiting unnecessary exposure and since I work with power being observant of other situations. Chris Wells From: "Oscar Overton" <[email protected]> Chris, Until you can do this repeatedly and the results are the same, you have only demonstrated a coincidence. Oscar Overton Product Safety - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
