From: Phiber Optik <phiber@eff.org>
Date: Tue, 2 Mar 93 13:56:43 PST
To: newsham@wiliki.eng.hawaii.edu (Timothy Newsham)
Subject: Re: tapping
In-Reply-To: <9303020333.AA04345@relay1.UU.NET>
Message-ID: <199303022155.AA04077@eff.org>
MIME-Version: 1.0
Content-Type: text/plain


> 
> 
> [forwarded from elsewhere]
> > 
> > [From Data Communications, January 1993]
> > 
> > INVENTION CUTS CABLING TIES
> > 
> > An inventor working from a garden shed in the U.K. has come up with a device
> > that enables PCs and other LAN equipment to send and receive data through
> > the plastic outer jacket of copper LAN cabling-- without piercing the
> > cabling.  Called the Watsonlinc Cable Coupling Transformer, the device
> > allows users to attach LAN equipment at any point in a network without going
> > through time-consuming and costly cable attachment procedures.  The
> > Watsonlinc, which must be placed directly next to a cable's outer jacket,
> > uses a proprietary technique to reduce noise interference while picking up
> > and transmitting data signals.  Watsonlinc-equipped network interface cards
> > (NICs) will appear in the next 12 months, according to inventor Mike Watson
> > (Walton-on-Thames, U.K.), who says the device's production cost of about $5
> > per unit will not significantly increase NIC sticker prices.  The Watsonlinc
> > works with both shielded and unshielded twisted-pair copper cabling, is
> > small enough to fit on laptop PC internal adapters, and is capable of
> > handling all common LAN speeds, Watson says.  The internationally patented
> > invention works just as well with voice signals.  Predictably, it already
> > has been licensed for use in telephone surveillance equipment.
> > 
> > 
> 
> 

Mike Watson rediscovers inductance, and the inductive tap.
Film at 11.