From: norm@netcom.com (Norman Hardy)
Date: Fri, 24 May 1996 15:07:03 +0800
To: cypherpunks@toad.com
Subject: Re: [hrdware] anti-Tempest video settings
Message-ID: <adcae054010210043e8c@DialupEudora>
MIME-Version: 1.0
Content-Type: text/plain


At 10:20 AM 5/10/96, Jean-Francois Avon wrote:
>Hi again.
>
>Is there anybody that have any idea about a color setting that would
>make it more difficult to detect by a Tempest attack?
>(I assume that Tempest cannot discriminate between various color guns
>and signals in the monitor...  Maybe I am completely wrong...)
....
I imagine that a color combination that cancels for an antenna in one
location will not cancel for another location. Many monitors have separated
wires for the separate colors.  A color combination that cancels for one
antenna polarization may not cancel for the other.