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From: caf@omen.UUCP (Chuck Forsberg WA7KGX)
Newsgroups: net.micro.pc
Subject: Re: Tempesting
Message-ID: <375@omen.UUCP>
Date: Fri, 25-Jul-86 16:16:11 EDT
Article-I.D.: omen.375
Posted: Fri Jul 25 16:16:11 1986
Date-Received: Sat, 26-Jul-86 06:38:51 EDT
References: <581@imsvax.UUCP>
Reply-To: caf@.UUCP (PUT YOUR NAME HERE)
Organization: Omen Technology, Portland
Lines: 17

As I was told, the purpose of the Tempest emissions criteria was to prevent
the emission of any energy that would allow the interception of any useful
data.  A machine could still emit lots of RFI from the CPU clock and power
supply without divulging any information.

So, a Tempest compliant computer isn't necessarily quiet enough to place
next to your neighbor's TV or SW antenna.

OF course, since *some* attention has been given to the issue of RF emissions,
chances are a Tempest compliant CPU would be cleaner than some others.

   Chuck Forsberg WA7KGX  ...!tektronix!reed!omen!caf   CIS:70715,131
   Author of Professional-YAM communications Tools for PCDOS and Unix
 Omen Technology Inc     17505-V NW Sauvie Island Road Portland OR 97231
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