Fwd: [TSCM-L] Re: New paint blocks out cell phone signals

[Eugen Leitl]

On Sat, Mar 04, 2006 at 12:31:01AM -0800, coderman wrote:
> you can: http://www.lessemf.com/paint.html

More background on: http://cryptome.org/datasec.htm

> there are also a few companies selling faraday cloth, though i don't
> recall the attenuation provided.  what i'd really like is something
> toggle'able, although the product described in this thread sounds more
> like snake oil than truly "nano reconfigurable faraday surface"
>
> a friend also has an attic/loft well coated in many layers of lead
> base; there are two small windows and the attenuation with lead based
> appears to be pretty decent as well.  (a little hard to find these
> day, though :)

Lead is only useful for radiation shielding, ungrounded lead with unshielded
windows and power wiring with no frequency filters leading outside is a not
particularly good Faraday cage. Lead base paint doesn't even contain metallic
lead, but lead oxides in a small proportion.

If you have to also shield against magnetic fields, then
http://en.wikipedia.org/wiki/Mu-metal & Co are your friends.

--
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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