Additional information: http://www.fda.gov/ICECI/Inspections/InspectionGuides/ucm071626.htm On 8/23/2011 3:22 PM, Carey Fisher wrote: > Whether or not this particular ferrite bead blocks none, some, a little, = a > lot or all RF is highly dependent on the specific ferrite material it's m= ade > from, how well the halves fit together and a host of other properties. H= as > anybody actually measured the performance of these little miracles at the > frequencies in question? > > "Studies have shown" (tm) that people will buy just about anything if it'= s > portrayed as a safety or health-preserving/enhancing device. I've got a > friend, perfectly rational, great web developer, likes to talk physics, > cosmology, etc, who wears a copper bracelet around his wrist because some= how > it's supposed to improve his health or prevent illness or some such. > > My policy is, before I buy some magic little goodie like a copper bracele= t > or RF Bead, is to a) determine whether indeed a hazard exists and b) > determine whether the little goodie is capable of mitigating the hazard > based on sound scientific principles and thorough testing if possible. > > Wow, I'm in a MOOD today! > > Carey Fisher > Chief Technical Officer > New Communications Solutions, LLC > 678-999-3956 > careyfisher@ncsradio.com > > > > > On Tue, Aug 23, 2011 at 2:44 PM, V G wrote: > >> On Mon, Aug 22, 2011 at 9:19 PM, James Newton>> wrote: >>> http://www.massmind.org/techref/ferritebead/cellphoneheadset.htm ? >>> >>> Seriously, Mouser has them. >>> >> >> That's the same reason I wanted one. >> >> Those of us who are concerned about any possible heath issues resulting >> from >>> the use of wireless gear have avoided the "bluetooth" headsets and opte= d >> for >>> a wired headset instead. Unfortunately, it turns out that the wire can >>> pickup the high power RF signals from the cell phone and transmit those >>> directly to your head along with the sounds from your phone call. Studi= es >>> have shown that using a wired headset can increase your exposure to cel= l >>> phone radiation by up to 3X. >> >> 1. Bluetooth headsets radiate only fraction of the power of a cell phone= .. >> Just a few mW compared to more than 1W. >> >> 2. Up to 3X? 3X more than sticking the phone to your head? >> -- >> http://www.piclist.com PIC/SX FAQ& list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> --=20 John Ferrell W8CCW "Until one has loved an animal, part of their soul remains unawakened." --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .