Article View: sci.electronics
Article #9747Re: Telephone Lines
From: Michael A. Covington
Date: Sat, 26 Jan 1991 16:30
Date: Sat, 26 Jan 1991 16:30
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In article <4574@mindlink.UUCP> Ed_Meyer@mindlink.UUCP (Ed Meyer) writes: >While in a meeting, one technical "guru" declared that my statement was wrong >when I said that a telephone was a form of transmission line. The "guru" >across the table from me declared that, not only was I totally wrong, but that >he and a senior engineering in the company had "proven" that a telephone line >was not a transmission line nor could it be modelled as such. So, is a >telephone line a form of transmission line or am I totally wrong as this "guru" >declare? > Ed Meyer It certainly is a transmission line; in fact, long phone lines have 88-mH inductors inserted into them periodically to keep the transmission line impedance closer to 600 ohms (which is the source impedance of a telephone set).
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<1991Jan26.163014.1986@athena.cs.uga.edu>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!athena.cs.uga.edu!mcovingtReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!athena.cs.uga.edu!mcovingt From: mcovingt@athena.cs.uga.edu (Michael A. Covington) Newsgroups: sci.electronics Subject: Re: Telephone Lines Message-ID: <1991Jan26.163014.1986@athena.cs.uga.edu> Date: 26 Jan 91 16:30:14 GMT References: <4574@mindlink.UUCP> Organization: University of Georgia, Athens Lines: 14