Return-Path: Received: (qmail 58943 invoked from network); 9 Jun 2004 21:41:32 -0000 Received: from unknown (HELO ptb-mxscan03.plus.net) (212.159.14.237) by ptb-mailstore02.plus.net with SMTP; 9 Jun 2004 21:41:32 -0000 Received: (qmail 42268 invoked from network); 9 Jun 2004 21:41:31 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore03.plus.net (212.159.14.217) by ptb-mxscan03.plus.net with SMTP; 9 Jun 2004 21:41:30 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1BYAp7-000AdI-SE for dave@picks.force9.co.uk; Wed, 09 Jun 2004 22:41:29 +0100 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BYAom-0008IB-4H for rs_out_1@blacksheep.org; Wed, 09 Jun 2004 22:41:08 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BYAol-0008I2-Dv for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 22:41:07 +0100 Received: from virus-out.ttyl.com ([193.212.240.200] helo=scan.telenor.net) by relay.salmark.net with esmtp (Exim 4.24) id 1BYHNH-0004Os-5Y for rsgb_lf_group@blacksheep.org; Thu, 10 Jun 2004 05:41:11 +0100 X-Fake-Domain: tns-fbu-22-209.corp.telenor.no Received: from tns-fbu-22-209.corp.telenor.no ([134.47.162.190] [134.47.162.190]) by scan.telenor.net with ESMTP for rsgb_lf_group@blacksheep.org; Wed, 9 Jun 2004 23:40:44 +0200 X-Fake-Domain: tns-fbu-22-213.corp.telenor.no Received: from tns-fbu-22-213.corp.telenor.no ([134.47.162.191]) by tns-fbu-22-209.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.6713); Wed, 9 Jun 2004 23:40:44 +0200 X-Fake-Domain: TNS-FBU-2E-006.corp.telenor.no Received: from TNS-FBU-2E-006.corp.telenor.no ([134.47.162.86]) by tns-fbu-22-213.corp.telenor.no with Microsoft SMTPSVC(5.0.2195.6713); Wed, 9 Jun 2004 23:40:44 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Date: Wed, 9 Jun 2004 23:40:44 +0200 X-Bad-Message-ID: no DNS (TNS-FBU-2E-006.corp.telenor.no) Message-Id: Thread-Topic: RE: RE: G3ldo's noise Thread-Index: AcROSpXxTqbx1/odRYCtUGmCsd/P9wAH0RXA From: jan-martin.noding@telenor.com To: rsgb_lf_group@blacksheep.org X-OriginalArrivalTime: 09 Jun 2004 21:40:44.0231 (UTC) FILETIME=[6B069570:01C44E6A] MIME-Version: 1.0 X-Spam-Score: 0.8 (/) X-Spam-Report: autolearn=no,HTML_50_60=0.183,HTML_FONTCOLOR_BLUE=0.1,HTML_FONTCOLOR_UNKNOWN=0.1,HTML_FONT_BIG=0.1,HTML_MESSAGE=0.001,NO_REAL_NAME=0.285 Subject: LF: RE: RE: RE: G3ldo's noise Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_50_60,HTML_FONTCOLOR_BLUE, HTML_FONTCOLOR_UNKNOWN,HTML_FONT_BIG,HTML_MESSAGE,NO_REAL_NAME 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 X-PN-SPAMFiltered: yes X-Spam-Rating: 2 Content-transfer-encoding: 8bit

tnx,

and even the audio type of transformer were tested as choke on 2.048Mb/s PCM systems, but introduced 6dB loss, they are quite heavy, while only the difference between the to windings adds to the series inductivity of a balanced line

---
J M Nøding, Datakvalitet, Telenor/TTS, Kristiansand
Telefon 0047-380-52660, 9077-7126 (QTH: 0047-380-87178)

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of jan-martin.noding@telenor.com
Hi

Very often such noise could be improved with a simple task, the first thing to try is connecting a bifilar wound choke where your telephone line enters the house. the next is to improve at your neighbours. Very often the balance is not what you might think…

In the UK, the external line is supposed to be balanced, but the extension wiring inside the house is inherently unbalanced because it includes a third “ringing” wire (one of Dave Lauder’s favorite topics!)

Cheers, Jim Moritz

73 de M0BMU