Path: utzoo!utgpu!watmath!clyde!att!rutgers!cmcl2!nrl-cmf!ames!lll-lcc!lll-tis!helios.ee.lbl.gov!pasteur!agate!saturn!eshop
From: eshop@saturn.ucsc.edu (Jim Warner)
Newsgroups: comp.dcom.lans
Subject: Re: Do you know about TCL?
Message-ID: <5537@saturn.ucsc.edu>
Date: 19 Nov 88 17:21:09 GMT
References: <853@amethyst.ma.arizona.edu> <735@morticia.cme-durer.ARPA>
Reply-To: eshop@saturn.ucsc.edu (Jim Warner)
Organization: University of California, Santa Cruz
Lines: 20

In article <735@morticia.cme-durer.ARPA> wallace@cme-durer.ARPA (Evan Wallace) writes:
>In article <853@amethyst.ma.arizona.edu>, chris@spock (Chris Ott) writes:
>
>Disadvantages:
>                ?

I have no complaints with the electrical properties of TCL transceivers.
They work fine.  I don't, however, like their vampire tap.  The problem
I see is it has exposed metal that is electrically connected to the outer
shield of the yellow cable.  It is too easy for a transceiver in a cable
tray or under a raised floor to be inadvertantly moved so that the metal
clamp makes contact to building steel.  Instant ground loop.  An Ethernet
segment must be grounded in one and only one place.  

If you're going to use their transceivers, take pains to be sure that
the exposed clamp can't come in contact with ground.  I'd rather not be
that careful -- so I haven't been buying their transceivers. 

jim warner
U.C. Santa Cruz