Posted by Sandy and Tim on
URL: https://www.es-forum.com/Effective-shielding-for-mobile-phones-tp1544827p1544838.html

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], "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 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,