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Path: utzoo!utgpu!water!watmath!clyde!rutgers!sunybcs!kitty!larry
From: larry@kitty.UUCP
Newsgroups: comp.dcom.modems
Subject: Re: What is Max speed possible on phone lines?
Message-ID: <2174@kitty.UUCP>
Date: Wed, 28-Oct-87 22:47:37 EST
Article-I.D.: kitty.2174
Posted: Wed Oct 28 22:47:37 1987
Date-Received: Sat, 31-Oct-87 18:20:21 EST
References: <WANCHO.12345854244.BABYL@SIMTEL20.ARPA> <16064@topaz.rutgers.edu>
Organization: Recognition Research Corp., Clarence, NY
Lines: 22
Summary: What can the FCC do?

In article <16064@topaz.rutgers.edu>, ron@topaz.rutgers.edu (Ron Natalie) writes:
> Foo.  Note that twisted pair Ethernet is a kludge.  This high-speed
> (Radio Frequency) unshielded twisted pair stuff is going to be put
> to an end as this stuff is not going to comply with FCC regulations
> on emissions.

	Actually, I don't believe that the FCC can do much about it.  The
Ethernet transceivers certainly meet FCC emission requirements when used
in a proper manner with coaxial cable (as intended).
	The problem comes to pass when people buy these $ 25.00 balun
transformers which match coaxial cable to balanced line, and run them over
unshieled telephone pairs.  The balun transformers themselves are just
passive devices which need meet no FCC requirements of any kind; I can't
envision their sale being "outlawed" or otherwise controlled.
	Wanna see something neat?  Try running two separate Ethernet
circuits any significant distance in multi-pair telephone cable using
these balun transformers.

<>  Larry Lippman @ Recognition Research Corp., Clarence, New York
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