Shielding, Van Eck, and Faraday Cages

[Adam Shostack]

On Thu, Aug 23, 2001 at 08:05:52AM -0700, Tim May wrote:
| On Thursday, August 23, 2001, at 01:43 AM, Eugene Leitl wrote:
| 
| > On Wed, 22 Aug 2001, Faustine wrote:
| >
| >> Have you happened to have seen any good papers on constructing do-it-
| >> yourself cheap, effective, portable shielding? Probably might as well
| >> ask for the moon too while I'm at it, but it's worth a shot!
| >
| > Using cast aluminum cases, copper foil shielding, tight glands which
| > preferably transport only optical signals or coax, using low power parts
| > which don't clock too many Hz, and the like.
| >
| > Even if you don't have access to a testing facility, careful work and 
| > some
| > thinking will eventually make you very, very silent.
| >
| 
| 
| Even without spectrum analyzers and the like, it's relatively easy to 
| test shielding: use a portable radio. Tune it to a couple of stations, 
| loud. Put in inside the Faraday cage. If you can still hear it, not very 
| effective. (Sound muffling should be second-order, but easy to take into 
| account.)

Theres an IEEE standard on doing this work, 299-1997, thats very
good, easy to understand and follow.

Adam



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"It is seldom that liberty of any kind is lost all at once."
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