[TowerTalk] Faraday Cage

[Norman Hockler]

Tower Talkers

It's called "frequency at cut off " An opening that's smaller than 
1/4 wave length will block all signals lower in frequency.

de Norm N8NH

At 04:36 PM 5/31/2008, David Gilbert wrote:

>Hi, Warren.
>
>I was going to suggest that 1/10 wavelength grid spacing at the highest
>frequency you want to shield would be sufficient, but I found this
>reference that recommends 1/20 wavelength.
>
>http://www.hollandshielding.com/pdf/emiemc_encyclopedia.pdf
>
>By the way, I didn't make it to the post office in time yesterday, so
>the disk I promised you won't go out until Monday.  Sorry ...
>
>73,
>Dave   AB7E
>
>
>
>warrenwolff at aol.com wrote:
> > This cage idea has always intrigued me.
> >
> > The copper mesh may be the cheapest and easiest way
> > to accomplish such an arrangement, BUT, it there a
> > maximum mesh size?
> >
> > It seems that one might find it just as effective to run
> > a? "nest" of copper wires, say 3 feet (or other) apart
> > and accomplish the same thing.
> >
> >
> > Warren; W7WY
> > _______________________________________________
> >
> >
> >
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> >
> >
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