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