>
> Dear Bill and Emil,
>
> Thanks for very useful replies. Would you mind if I copied your
> replies amongst our "treating autism" friends/. (Many of our most
> immune damaged children seem to be electrosensitive).
>
> With thanks,
> Sandy
>
> --- In [hidden email] <eSens%40yahoogroups.com>, "Bill Bruno"
> <wbruno@...> wrote:
> >
> > I agree completely with Emil. Those little beads others sell are
> probably
> > a waste of money. If I had to hold a shield to my head, I would
> certainly
> > want
> > a shield that covers the whole phone (and lessemf sells them). I'm
> not
> > sure about the relative merits of that kind of shield, versus
> speaker phone
> > mode, versus a wired head set (preferably with air tube). But I no
> longer
> > feel safe with a cell phone on within 10 feet of me. Even with a
> perfect
> > shield there is potential for reflections, plus damage to people
> near you.
> >
> > Pagers that only receive should be considered. Also, there exist
> (I think)
> > infrared head sets, although the one I saw advertised was for car
> use
> > and not actually in stock.
> >
> > Bill
> >
> > On 8/20/07, Less EMF Inc <lessemf@...> wrote:
> > >
> > > > I would be very grateful if someone could point me in the
> right
> > > > direction about mobile phone shields. I'd like to understand how
> > > > shields can be effective during normal call use. My confusion
> is that
> > > > shielding could attenuate signal strength which could cause the
> phone
> > > > to transmit at higher power.
> > >
> > > Hi Sandy,
> > >
> > > There is a lot of confusion about cell phone shields.
> > >
> > > There are 2 points to remember:
> > >
> > > 1- the entire phone radiates, not just the antenna
> > > 2- depending on the design of the phone, a certain % of the
> radiation is
> > > absorbed by the user's head. This radiation is not useful for the
> > > communication. Ideally, the shield should shield this portion of
> the
> > > radiation, and still allow the balance of the signal to radiate
> outward,
> > > if
> > > the phone is still to work.
> > >
> > > Now, notice this: if instead of encountering a nice absorbent
> head and
> > > being
> > > "wasted", the radiation encounters a nice reflective shield
> (between the
> > > head and the phone), then you are not reducing the performance of
> the
> > > phone,
> > > you are actually improving it.
> > >
> > > Notice further, if you shield the side of the phone away from the
> head,
> > > you
> > > will reduce performance, and increase radiation to the head.
> > >
> > > Emil
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>