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From: wunder@hpcea.UUCP
Newsgroups: comp.dcom.lans
Subject: Re: Thin Ethernet drop cables
Message-ID: <470001@hpcea.HP.COM>
Date: Thu, 23-Apr-87 22:38:04 EST
Article-I.D.: hpcea.470001
Posted: Thu Apr 23 22:38:04 1987
Date-Received: Sat, 25-Apr-87 08:35:53 EST
References: <207@nih-csl.UUCP>
Organization: HP Corporate Engineering - Palo Alto, CA
Lines: 16

The Ethernet spec allows for 3cm stub to get from the center
conductor to the guts of the transceiver.  This includes wiring
inside the transciever.  The BNC tee eats up a lot of that 3cm. 

If you put a drop cable on the tee, a wave on the coax will see
25 Ohms at that point, and half the volts will be reflected.  In
addition, half of the wave goes down the drop cable, and half the
wave goes down the coax.  So, you lose 75% of your signal at each
drop.

In practice, it works for the first two or three stations, then
everything falls apart. 

Don't do it. 

wunder