From: Kent Crispin <kent@songbird.com>
Date: Wed, 11 Feb 1998 03:48:35 +0800
To: cypherpunks@toad.com
Subject: Re: Soft Tempest
In-Reply-To: <tw7k9b5uzhy.fsf@the-great-machine.mit.edu>
Message-ID: <19980210113051.14971@songbird.com>
MIME-Version: 1.0
Content-Type: text/plain



On Mon, Feb 09, 1998 at 09:31:05AM -0800, David Honig wrote:
> At 10:14 PM 2/8/98 -0800, Tim May wrote:
> >At 9:19 PM -0800 2/8/98, Ryan Lackey wrote:
> >
> >
> >The physics suggests just the opposite: the RF emissions from laptops are
> >expected to be lower from first principles, and, I have heard, are
> >measurably much lower. (I say "have heard" because I don't have any access
> >to RF measurement equipment...I once spent many hours a day working inside
> >a Faraday cage, but that was many years ago.)
> ...later...
> >But before going this route, I'd want to see some measurements. Laptops
> >might already be "quiet enough." (Measurements are needed to determine the
> >effectiveness of any proposed RF shielding anyway, so....)
> 
> The interference that laptops can cause with avionics is 
> prima facie evidence that laptops are not quiet.

Even palmtops are quite noisy, in fact.

-- 
Kent Crispin, PAB Chair			"No reason to get excited",
kent@songbird.com			the thief he kindly spoke...
PGP fingerprint:   B1 8B 72 ED 55 21 5E 44  61 F4 58 0F 72 10 65 55
http://songbird.com/kent/pgp_key.html