> 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
>> > > 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]
>>
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