Hi Steve... The cause of people hearing radio transmissions in their heads has been traced to old school tooth fillings that used an amalgam of metals (sometimes Mercury), that, with the saline (conductive) mixture of saliva, produced a non-linear detector, similar to the detector in a crystal set... or the germanium diode used in present day crystal sets. By the way, this only works to detect AM transmissions, not TV (vestigial sideband) or FM (Frequency Modulation)...
New-School dental fillings do not contain materials, but are composed of fast-setting epoxies, resins, and other non-conductors... Personally, I've had the older style fillings replaced by the newer types... and I'm nearly 75 years old, so there were many old-style fillings in this old noggin... ...Larry, the Ancient Pelican (W1GOR) Keep thy airspeed up, less the earth come from below and smite thee. (William Kershner) ----- Original Message ----- From: <sbjohns...@aol.com> To: <amradio@mailman.qth.net> Sent: Sunday, January 17, 2010 12:00 PM Subject: Re: [AMRadio] More on "Electromagnetic Allergies" > It is indeed possible that some people have the ability to detect some > electromagnetic fields directly. I recall a report I read in the > 1970s that there are at least some who seem to have an ability to > demodulate AM signals and hear the audio - there was a patented design > last century that coupled amplitude modulated RF to a person's body and > the modulating audio could be "heard". It was considered as a possible > hearing aid or no-headphones monitoring method. But results were not > consistent and the field had to be strong and tightly-coupled to the > body. I'm forgetting what it was called... the "Neurophone" maybe? > I don't think it is related to the ultrasonic thing being sold today > under that name: http://www.neurophone.com/ > > As I recall, I don't think anyone who tried it reported anything > unpleasant or irritating. Some didn't get it, some only heard > something after extended exposure, some heard the audio right away. > > But it seems highly unlikely that the weak fields produced by Wi-Fi, > neighborhood cellphone sites, etc would produce a serious bodily > reaction. We are constantly awash in electromagnetic fields from the > Sun, Earth, and the rest of the universe, as well as much stronger > local man-made noise and radio and TV signals - wouldn't someone > supposedly sensitive to weak fields like Wi-Fi and a neighborhood cell > site have been bothered by the much stronger sources much earlier and > to a greater degree? > > Steve WD8DAS > > sbjohns...@aol.com > -------------------------------------------------------------------- > Capital City Hamfest - Sat, Jan 23 - Madison, Wisconsin > http://www.wd8das.net/hamfest > -------------------------------------------------------------------- > > > > > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
