Return-Path: Received: (qmail 98615 invoked from network); 9 Jun 2004 12:48:19 -0000 Received: from unknown (HELO ptb-mxscan01.plus.net) (212.159.14.235) by ptb-mailstore03.plus.net with SMTP; 9 Jun 2004 12:48:19 -0000 Received: (qmail 40956 invoked from network); 9 Jun 2004 12:48:18 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore01.plus.net (212.159.14.215) by ptb-mxscan01.plus.net with SMTP; 9 Jun 2004 12:48:17 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1BY2V7-000AQB-Bi for dave@picks.force9.co.uk; Wed, 09 Jun 2004 12:48:17 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BY2Tz-00029z-4O for rs_out_1@blacksheep.org; Wed, 09 Jun 2004 13:47:07 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BY2Ty-00029q-II for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 13:47:06 +0100 Received: from imo-m22.mx.aol.com ([64.12.137.3]) by relay.salmark.net with esmtp (Exim 4.24) id 1BY92U-00039q-CV for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 20:47:10 +0100 X-Fake-Domain: G4gvw@aol.com Received: from G4gvw@aol.com by imo-m22.mx.aol.com (mail_out_v37_r2.6.) id l.d8.c94cf6b (4394) for ; Wed, 9 Jun 2004 08:46:52 -0400 (EDT) From: G4gvw@aol.com Message-ID: Date: Wed, 9 Jun 2004 08:46:52 EDT To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 9.0 for Windows sub 630 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=no,DATE_IN_PAST_06_12=0.599,HTML_20_30=0.474,HTML_MESSAGE=0.001,NO_REAL_NAME=0.285 Subject: LF: 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_20_30,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: 1 Content-transfer-encoding: 8bit

Another thought which might be relevant. I was struck by the relationship with telephone lines. A few years ago I had a box installed by the "telephone company who used to be a post office" that created 2 telephone lines out of one (they still made me pay for two) and which I eventually realised was a major noise source on 80 metres. It had a boolean logic which went something like: No lines in use = No Noise, No.1 line in use = noise burst approx every 2 secs, No2 line in use = noise burst approx every 2 secs, Nos. 1 & 2 lines in use = slow (5 - 10 wpm) random morse (or something similar). It went away when I eventually complained and they came and dug a hole and did the job properly so I could have ISDN. So I wonder if the LDO noise has a similar provenance

Pat G4GVW