Douglas A. Tutty wrote:
...
I'm wondering if in your travels, have any of you seen a case (tower,
desktop, or rackmount) that is:
Yes, but a very long time ago. Some of mine were by Zenith (or at least
delivered via Zenith) and weighed way too much, using something
outrageous liked 1/8" steel or something. For shielding, it doesn't
have to be thick unless you want it to be able to take a bullet or you
just want it clunky.
-- of heavy steel frame and panels.
It doesn't have to be that beefy, just a complete faraday cage -- at
least for the frequencies generated by the components. That gives you
some play in regards to the distance between the inner and outer
ventilation grilles and the size of the holes in the grilles.
An old dorm fridge, milk box or metal ice chest, for example, could be
used for the main unit if the gasket is replaced with wire mesh and you
figure out the ventilation.
Remember that the cables and peripherals will leak, too, and must be
shielded if that is really what you are after. The mouse you could
rewire yourself probably, but I'm not sure any more what the keyboard
and screen need.
-- perhaps overlaping vents with no line-of-sight from the inside to the
outside.
The grilles should have round holes. I can't remember if they should be
of different radii.
This might give some ideas or look around elsewhere for info on RF
shielding:
http://www.eskimo.com/~joelm/tempestsource.html
Regards,
-Lars
