Re: VLF

Posted by Charles-3 on
URL: https://www.es-forum.com/VLF-tp1536681p1536748.html

Hello Anders,

of course spectrum analysis equipment is good equipment, but the costs are
enormous.

For a private person too high.
And you must take into account, that those values are not precise.
Officially, they calculate with a tolerance of + and - 3 dB.
The meter, the antenna and the cables must be calculated as well, and they
must be checked and calibrated periodically, which costs also.

There are alternatives, which give about the same information.
I have found that.

Perhaps after 1 November, another alternative is on the market.
We will see.

Your dream about DC-3GHz will remain a dream.
A spectrum analyzer will not measure anything about DC.
There, one needs other measuring equipment, like a Feldmuehle for electrical
DC or a magnetometer or a scintillationscounter for magnetic DC.

For AC, I now have a meter, measuring from 5 kHz to 30 kHz and from 30 kHz
to 150 kHz.
Some sounds I have placed on the website under info.

I was astounded how much signals my completely turned-off televisions set
was still emitting.

Greetings,
Charles Claessens
member Verband Baubiologie
www.milieuziektes.nl
www.hetbitje.nl
checked by Norton Antivirus

----- Original Message -----
From: "Anders Eriksson" <[hidden email]>
To: <[hidden email]>
Sent: Monday, September 06, 2004 11:56
Subject: Re: [eSens] VLF


> Hi Charles,
>
> as I see it, it's the only instrument (spectrum analysis equipment)
> worth using if you are supposed to do serious measurements.
> If you use a spectrum analyzer and an antenna of good quality you can
> tell exactly the amount of energy emanating from each source (cellular
> phone tower, DECT, FM-radio and so on).
> My dream is to get hold of professional instrumentation for the entire
> spectrum from DC to lets say at least 50GHz. I'm sure I will fulfill a
> part (DC-3GHz) of my dream during 2005!
>
> As for florescent light: has anyone on the list information of how much
> UV-light (and other frequencies related to Hg)that is emitted?
>
> Greetings Anders
>
> ------------
>
> Charles wrote:
> > So Lachlan,
> >
> > you are thinking about buying spectrum analysis equipment.
> > Why?
> > To what purpose?
> >
> > Greetings,
> > Charles Claessens
> > member Verband Baubiologie
> > www.milieuziektes.nl
> > www.hetbitje.nl
> > checked by Norton Antivirus
> >