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charles
# Posted: 2 Sep 2010 19:23
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On: http://www.hetbitje.nl/bitjeE20109e.pdf
the latest issue of my publication can be downloaded.
It is in english.

The point is, that broadband HF meters cannot summ up all the signals, like a spectrumanalyser can.
So, if you use a broadband meter, you should not measure in only one direction, but at more points. You can hear the different modulations, and you should note the measured values.
If they are in uW/m2, you may just add them together.
If they are in V/m, you may not add.
Here you can go the hard or the easy way.
The hard way is raising each value to teh square, add these up, and from this sum., you should find the square root.
The easy way is to go to:
http://www.milieuziektes.nl/Pagina112a.html
and download and install Mobidig.exe.
With this smallprogramm you convert the V/m into uW/m2.
Those values you just add up.

So, you should measure more different sources yourself.

charles
# Posted: 2 Sep 2010 19:27
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In the issue of *het bitje*, please have a look at the first image at page 17.
Here I measured the influence of a powerplug or dLan.
This *dirty power* was measured in another wallplug some 6 meters away.

Notice that the peaks and spikes go all the way up to 20 MHz.
And no computer or else was even running. Just the modem and the plug.

daniel
Member
# Posted: 5 Sep 2010 17:32 - Edited by: daniel
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Charles, you seem to be a very good technician or may be a engineer. Are you able to measure "radio beam" with your equipment? Those signals are transfer between cell towers in are in the range of 1 to 40 Ghz. Those signals can be reflected by any metals, penetrate in housing and can be very harmfull.

charles
# Posted: 5 Sep 2010 23:28
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Hello daniel,

my antenna will measure upto 18 GHz, but is restricted to the meter, which will go only to 9.4 GHz.

I suppose you mean the directional beams.
However, these beams are very, very narrow, and nothing may come in between.
I do not think that they are reflected, nor do they penetrate houses.

But most mobile phone masts do have a downtilted beam, directed slightly under the horizon.
But diametrically to this main beam, there are sidelobes, which are directed downwards.
So if you have a mobile phone mast on your roof, those sidelobes can hit you through the ceiling. They may have the strenght of the swiss guide lines, as can be read in the measurements by Bornkessel.

Many people are afraid of high frequencies, but it is my impression that the lower frequencies, which come as *dirt* are much more hazardous.

UMTS or 3G contains signals of 100 Hz with many multiples, and signals of 1.5 kHz with many multiples. The organisation channel is pulsed with 15 kHz. I have measured in a side lobe of an UMTS signal a strong 100 kHz signal.
With GSM many other kHz signals, which are very disturbing for electrosensitives.

Please have a look at http://www.milieuziektes.nl/Pagina112d.html
There you can see that there is no *golden rule* for the distance to masts.

ericgeneric
Member
# Posted: 5 Sep 2010 23:51
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I do not think that they are reflected, nor do they penetrate houses.

Ah but they do. Some do. Otherwise I would not be able to feel them strongly inside the house, the same as outside.

EG.

charles
# Posted: 6 Sep 2010 10:34
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I am soyry to disagree with you.
Did you meassure them?

Let me say this bluntly.

You have no idea what is coming to you in the house.
(Most people do not know, but it is enormous.)

You may have a lot of *dirty air*.

I can measure from 1 Hz up to 9.4 GHz.
I even can measure according the EN50371, EN55011 and EN55022, from 20 MHz up to 1 GHz.
The antenna gain diagram is at http://www.milieuziektes.nl/Pagina11.html
News 27-07-2010.

Don't forget, that very weak signals can bring you out of balance.

The dose / response principle does nor work for electrosensitives.

ericgeneric
Member
# Posted: 6 Sep 2010 12:59
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The pain and sensations I get from the mast outside our house is the same inside as out...slightly stronger outside, but in the exact same place and direction.

We'll have to disagree on this, because I trust what I sense and experience in my own house and body, over technical theory.

EG.

daniel
Member
# Posted: 6 Sep 2010 15:32 - Edited by: daniel
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I suppose you mean the directional beams.
However, these beams are very, very narrow, and nothing may come in between.
I do not think that they are reflected, nor do they penetrate houses.


2 of those beams here are at max 50 feet high and directly pointed into town. There's many things at this levels: pylons, poles, electric wires, buildings, etc. wich they can interfer with microwaves radiation.

charles
# Posted: 6 Sep 2010 17:24
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From overhere, the Channel is in betweeen, I cannot say what it is then.
Only a measurement of the signal, and its frequency can give more data.

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