Return-Path: Received: (qmail 18315 invoked from network); 17 Dec 2000 20:37:13 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 17 Dec 2000 20:37:13 -0000 Received: (qmail 19806 invoked from network); 17 Dec 2000 20:32:15 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 17 Dec 2000 20:32:15 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 147kJQ-0007PJ-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 17 Dec 2000 20:21:40 +0000 Received: from mta06-svc.ntlworld.com ([62.253.162.46]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 147kJP-0007PE-00 for rsgb_lf_group@blacksheep.org; Sun, 17 Dec 2000 20:21:39 +0000 Received: from oemcomputer ([62.255.42.1]) by mta06-svc.ntlworld.com (InterMail vM.4.01.02.27 201-229-119-110) with SMTP id <20001217202130.BPZK15131.mta06-svc.ntlworld.com@oemcomputer> for ; Sun, 17 Dec 2000 20:21:30 +0000 Message-ID: <000201c06866$c358bf20$012aff3e@oemcomputer> From: "Paul & Vanessa" To: rsgb_lf_group@blacksheep.org References: <19748884.976899354858.JavaMail.imail@almond.excite.com> <001c01c06782$9f949c60$4a2378d5@dave> Subject: LF: Seasonal QRN Date: Sun, 17 Dec 2000 20:19:53 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello All, I have today encountered a new source of QRN, which proved to be quite baffling. On Spectrogram, it looked like a series of vertical twisted ropes of varying thickness, then a band of general noise and mush, the whole thing repeating on a 5 minute cycle. Strength was enough to obliterate all but the strongest signals. Rotating the Rx loop did not null out the QRN, suggesting a very local source. Unlike washing machines which can have a very similar effect, the interference persisted for hours. I was stumped until my YL suggested the newly-installed Xmas tree lights! These were of the type that can be set by means of a control box to give a variety of flashing sequences. Sure enough, switching them off killed the QRN, and you get a different pattern for each sequence. Fortunately, on the "steady lights" setting there is no problem, which helps alleviate the QRN from my young daughter when the lights are out! Regards to all Paul G4MD