From: frantz@netcom.com (Bill Frantz)
Date: Thu, 4 Jan 1996 02:40:51 +0800
To: cypherpunks@toad.com
Subject: Re: Guerilla Internet Service Providers (fwd)
Message-ID: <199601031815.KAA15424@netcom5.netcom.com>
MIME-Version: 1.0
Content-Type: text/plain


At 23:33 1/2/96 -0800, Lucky Green wrote:

Previous exchanges deleted...

>Infrared and laser are not very reliable between buildings during fog.
>Between your house and your neighbor, a low cost 900MHz bridge would be the
>best way to go. On such short distances, an omni-directional antenna will
>work just fine. Check out Solectek (cheaper) or Cylink (faster). Both offer
>DES link encryption.

With a tightly focused beam (light is easy, I don't know about lower
frequencies), you can prevent interception except by very obvious physical
devices.  (e.g. Someone in a cherry picker truck.)  You may be able to
avoid the need to encrypt the link (and all the paranoia about key
management, advances in factoring etc. that that implies.)

Bill

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Bill Frantz                   Periwinkle  --  Computer Consulting
(408)356-8506                 16345 Englewood Ave.
frantz@netcom.com             Los Gatos, CA 95032, USA