X-GM-THRID: 1213545043979292481 X-Gmail-Labels: rsgb lf X-Gmail-Received: d286cfb69db290a42deec36e0198a1c61873badc Delivered-To: daveyxm@gmail.com Received: by 10.64.249.16 with SMTP id w16cs321715qbh; Sun, 3 Sep 2006 16:39:00 -0700 (PDT) Received: by 10.48.230.18 with SMTP id c18mr5971775nfh; Sun, 03 Sep 2006 16:39:00 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id k9si8004200nfc.2006.09.03.16.38.59; Sun, 03 Sep 2006 16:39:00 -0700 (PDT) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1GK1SV-0005ad-PP for rs_out_1@blacksheep.org; Mon, 04 Sep 2006 00:32:59 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1GK1SV-0005aU-BT for rsgb_lf_group@blacksheep.org; Mon, 04 Sep 2006 00:32:59 +0100 Received: from yk-mlwprd2.northwestel.ca ([198.235.201.13] helo=mail2.theedge.ca) by relay2.thorcom.net with esmtp (Exim 4.51) id 1GK1SR-0001JN-0v for rsgb_lf_group@blacksheep.org; Mon, 04 Sep 2006 00:32:59 +0100 Received: from eagles (whthyt235-40.northwestel.net [207.189.235.40]) by mail2.theedge.ca (Spam Firewall) with SMTP id 620D98CBAF for ; Sun, 3 Sep 2006 17:41:13 -0600 (MDT) Message-ID: <004201c6cfb1$43fca670$6501a8c0@eagles> From: "J. Allen" To: References: <001501c6cf38$459a5be0$6501a8c0@eagles> <000d01c6cf92$72ec4720$8a7b7ad5@w4o8m9> Date: Sun, 3 Sep 2006 23:32:48 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Virus-Scanned: by Barracuda Spam Firewall at theedge.ca X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,AWL=0.036,FORGED_RCVD_HELO=0.05 Subject: LF: PLC record keeping and experiments Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Status: O X-Status: X-Keywords: X-UID: 4699 Jim and All, Yes, it is good idea for me to track known leaking PLC signals. For now, I am concerned about how strong my signals are in their lines. Unfortunately, the fact that I am not causing interference is good enough for them... I would like to measure how strong my signals are in their system in comparison with their wanted PLC signals, and I believe that they will allow me to set up a receiver and computer in their substation to measure these things. I was the foreman of the maintenance electrical / instrumentation staff and had done hands on maintenance of the SCADA / PLC system, and because I am a licensed power systems electrician, they know I can work around the substation safely. I feel good that I can convince them to let me make measurements. Believe me, Spectran and Argo will get a workout if they say yes as I expect. It will likely happen next spring, after thaw and before the summer load, when jeopardy to the Yukon isolated power grid will be the least. When I am there I can track all of the PLC system frequencies that might have changed since I retired and see how any outside signal compares with the signals within their transmission lines. I strongly believe, and this is supported by their senior PLC technician, that there will be no interference at all. I hope we can prove it. 73 J.