>
> Hi Glenn & Randolf,
>
> If we can take the computer's CPU clock speed as its highest frequency
> component then the aperture/mesh size below which shielding for the
> computer will begin is:
>
> (0.3 m)/(CPU speed in GHz) or
> (300 m)/(CPU speed in MHz)
>
> Smaller aperture sizes than this work much better. For typical square
> mesh, divide by the square root of 2 to account for the diagonal of
> the mesh being its largest aperture width.
>
> For example, if we had a 1 GHz CPU, then square mesh below (30
> cm)/(sqrt 2) ~ (21 cm) will begin to confine the transverse EM
> radiation. A 1/4" square mesh has as its largest aperture width
> (0.25") * (1.414) ~ (0.35") ~ (0.89 cm) which should readily shield the
> transverse emissions in the above example.
>
> Beau
>
> --- In [hidden email], "Glenn Coleman" <glennhcoleman@h...>
> wrote:
> > Hello,
> >
> > I have thought of something similar, but to hook an external
> keyboard, and
> > use a wire-mesh fence between me and the notebook. I figure if wire
> mesh
> > works on microwaves it may work here too. I may even make a whole
> box
> > around my notebook with notebook sitting in cage.
> >
> > If it does work, then I can find a finer quality mesh so I can see
> monitor
> > better. I was going to start with some wire fencing with 1/4"
> holes to
> > begin with.
> >
> > Glenn
> >
> >
> > ----Original Message Follows----
> > From: "randolf_everywhere" <Thats@M...>
> > Reply-To: [hidden email]
> > To: [hidden email]
> > Subject: [eSens] shielding Notebook
> > Date: Sun, 26 Sep 2004 11:09:02 -0000
> >
> > Hello,
> >
> > I am thinking of shielding my Notebook. Maybe with paint or with
> > wallpaper on its outside. I tested and know shielding it will help.
> But I do
> > not know If there can occur problems when I do it.
> >
> >
> > Randolf Weinand
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
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>
>
>