Re: TEMPEST laptops (fwd)

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Date: Thu, 05 Nov 1998 09:28:06 -0800 From: Michael Motyka Subject: Re: TEMPEST laptops (fwd)

The distinction you are trying to express is that not all signals have equal information content and that it is the levels of the high-content ones that matter.

Nope. What I am saying is the absolute magnitude of the carrier wave is irrelevant, it's the modulation that matters and that modulation if small and it's riding on a big carrier is hard to get at because you swamp your front-ends because of dynamic range.

Fine, but shielding is indiscriminate so shield away.

Shielding will attenuate all parts of the signal so it is a Good Thing (TM).

And run your Tesla coil and some Ramones music to increase the ambient noise while you're doing sensitive computing.

Gabba gabba hey hey...thought I don't run my Tesla Coil when my computers are on, they object to the 4ft sparks.

Look for MIB carrying Dewars in your neighborhood! How cold do Peltier junctions get? Probably good enough for a sidewinder or a low-noise rcvr.

Peltier devices are for thermal transport by binding the thermal photons and transporting them to a different environ where they may be emitted. Hence the original environ is cooled. You're talking about Josephson Junctions I suspect and they're useless for signal detection, they're a switch. SQUIDS are what are used for truly small level signals. The KKK took my baby away.... ____________________________________________________________________ To know what is right and not to do it is the worst cowardice. Confucius The Armadillo Group ,::////;::-. James Choate Austin, Tx /:'///// ``::>/|/ ravage@ssz.com www.ssz.com .', |||| `/( e\ 512-451-7087 -====~~mm-'`-```-mm --'- --------------------------------------------------------------------