Subject:  Re EMF-L Tech Microwave base stations
Date:     Sat, 26 Jul 1997 131034 -0500 (CDT)
From:     GaryBrown <mrgary@flipag.net>
To:       Multiple recipients of list <emf-l@mail.llion.org>
--------------------------------------------------

Alasdair Philips wrote:

> Dear all
>
> I continue to develop my thoughts on cell phone base stations and
> present my
> latest "ruminations".  They were prompted by a Powerwatch member
> sending me
> a report giving measurements, made by a reputable firm of consultants,
> near
> a 1.8GHz cellphone base station mast at her children's school.
>
> The meter they used was a reputable make and was recently
> recalibrated.  An
> RMS (Root Mean Square) meter is not ideal to measure the pulsed
> radiation
> from TDMA (Time Division Multiple Access) communications systems such
> as the
> GSM standard. An RMS meter theoretically measures the average power
> but
> often is not good at time averaging the short widely spaced pulses
> from
> these TDMA systems.
>
> Assuming the averaging is done accurately, and only one channel was
> active
> at any one time, we need to multiply the field values by a factor of
> around
> 8 to estimate peak power during the actual pulses.  This would give
> levels
> of around 10 volts/metre which is 20 times lower than the current UK
> NRPB
> Guidelines, and about 6 times lower than the proposed pan-European
> CENELEC
> Pre-ENV 50166-2 levels at this frequency.   I use the x8 as I believe
> the
> peak power in the pulses is important, however, as both sets of
> guidelines
> actually refer to 6 minute averages theoretically we should not use
> the x8
> factor and the "safety" margins become about 160 times and 48 times
> respectively.  In fact the CENELEC standard does include complicated
> formulae for peak pulse amplitudes, but these are still based on power
> levels.
>
> If fact I do not think it is an issue of power, but of information.
> Our
> bodies pick up the pulsing of these signals and this may interfere
> with
> complex cellular processes.  Assuming the pulses they measured had a
> magnitude of 10 volts/metre we need to ask how this level compares
> with the
> ambient background level.
>
> The natural thermal background level at 1.8GHz is somewhere between 20
> and
> 50 microvolts/metre (26dBuV/m and 34dBuV/m).  The "man-made
> electrosmog"
> level is usually below 100 (40dBuV/m) microvolts/metre, with strong
> broadcast TV (500MHz) and FM radio (100MHz) signals normal not
> exceeding
> 0.1volts/metre (100dBuV/m) unless you are close to a large broadcast
> transmission mast where they still rarely exceed 2 or 3 volts/metre.
>
> If we accept an unusually high "ambient" level of 0.1volts/metre we
> see that
> these cell-phone base-station pulses are poking up 100 times higher
> than
> this - so, of course, our bodies WILL detect them.  It would be like
> someone
> flashing a torch or beacon at us.  The official agencies say "so what,
> there
> is not enough power to be dangerous".  Dr Von Klitzing says they
> change our
> brainwave patterns, though his work has not been successfully
> replicated.
>
> You pay your money, use your intuition, and in the end have to make
> your
> choice. There is no absolute answer - we just do not know yet.  If you
> are
> not happy, then change your children's school and encourage other
> parents to
> do the same.  That would at least make the school governors sit up and
> think.
>
> These are just some further thoughts by Alasdair Philips
>
> I welcome comments & criticism as it helps my thinking move forward.
>
> Alasdair,
> Powerwatch Network, UK.
>
>
>
> Alasdair Philips    (aphilips@gn.apc.org)

   In Palm Beach county Florida, the school district has installed 8
sites from
PrimeCo, Bell South, and Sprint. They had scheduled at least 24 to 32
sites
before we were able to slow the process by leveling parental and
political
pressure. The "show me the money " attitute seems to be the present
school district philosophy at this time. We have presented a boatload of
information/studies on this issue.
Be advised there are 130,000 children attending school in this school
district.
Real Estate and Planning division of PBschool district cling to the
Molder Study to justify there position for which they have little
comprehension of.
Look forward to your comments and input.
Sincerely Gary Brown-FACTS-families aginst cell towers at schools


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Reprinted with permission of Roy Beavers, http://www.feb.se/EMF-L/EMF-L.html