Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!seismo!rochester!pt.cs.cmu.edu!andrew.cmu.edu!jg2u# From: jg2u#@andrew.cmu.edu.UUCP Newsgroups: sci.electronics Subject: Re: Wireless Audio Link Message-ID: Date: Fri, 20-Mar-87 11:38:10 EST Article-I.D.: andrew.MS.V3.18.jg2u.80020d03.newcastle.ibm032.3867.1 Posted: Fri Mar 20 11:38:10 1987 Date-Received: Sun, 22-Mar-87 18:22:37 EST Organization: Carnegie-Mellon University Lines: 31 ReSent-Date: Fri, 20 Mar 87 11:39:47 est ReSent-From: postman#@andrew.cmu.edu ReSent-To: nntp-xmit#@andrew.cmu.edu Return-path: To: outnews#ext.nn.sci.electronics@andrew.cmu.edu, larry@kitty.UUCP (Larry Lippman) Newsgroup: sci.electronics <1. You have a defective cable, possibly with leakage from conductor-to- < conductor and conductor-to-ground. Such leakage could be rather < high resistance and caused by water permeating a damaged section of < cable. Since this may be high-impedance leakage, it may not have < been recognized as such; i.e., any attenuation and noise may have < been attributed to equipment and not the line. Many installations < of conduit which run underground will fill with water. This is an < accepted fact-of-life and generally not a problem, unless the sheath < of the cable is damaged. How did the cable get damaged in the first < place? Most likely by the electricians who pulled it! I have had < firsthand experience with electricians who yanked the hell out of < communication cable, causing internal damage, by thinking it was just < like a piece of (more robust) 250 MCM wire! DING! DING! DING! The bells and whistles are going off. As for your other points - I have already looked into those problems. But this one escaped me. So I have just gotten off the phone with the electrian that ran the wire. He remembered pulling the wire well (from three years ago) - why ? Because they used a 4 ton come-along and a cable griper to take the slack out of the run (since they couldn't access the pull boxes along the way). Consequently the Chief Engineer at the time tried (and failed) to make them replace the entire line (it was all one piece). And to top it off the conduit is always filled with water! AAAGGGHHHH!!! Thanks for the response. But now what? Since there are 18 wires and 9 shields could I find enough good wires an possibly go digital (as many people have suggested) Joey