On Jan 30, 2008 3:50 PM, Douglas A. Tutty <dtutty@porchlight.ca> wrote:

quoted text
> AIUI, tempest shields from the transients from keyboards.  I don't know
> that it shields from all EMF above (arbitrarily) 100 MHz.  Besides, I'll
> bet that to get the tempest certification would cost a whole lot more
> than even a skid of old servers.


Tempest is not just shielding keyboard and mouse - it's the whole system.
Really, one of the bigger issues today is that newer PCs have crappy
shielding, and one of the tricks to get UL certification (for peripherals)
is to find the oldest all metal box PC you can find, put the card in, take
out every other component inside, that you can, and then hand it to UL for
testing.

In your case, if you have a friend with an all aluminium box, or if funds
are good, get one, and see if that helps.  Heck, make sure you have good
ground on it, solder a copper wire from it to your nearest ground.

And, in all seriousness, has she tried a tin-foil hat?



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