Return-Path: Received: (qmail 3368 invoked from network); 22 Jan 2001 23:15:58 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by 10.226.25.101 with SMTP; 22 Jan 2001 23:15:58 -0000 Received: (qmail 16158 invoked from network); 22 Jan 2001 23:19:29 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 22 Jan 2001 23:19:29 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14Kq9c-0004Xo-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 22 Jan 2001 23:13:40 +0000 Received: from mail3.svr.pol.co.uk ([195.92.193.19]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14Kq9b-0004Xj-00 for rsgb_lf_group@blacksheep.org; Mon, 22 Jan 2001 23:13:39 +0000 Received: from modem-238.alabama.dialup.pol.co.uk ([62.137.52.238] helo=robing) by mail3.svr.pol.co.uk with smtp (Exim 3.13 #0) id 14Kq9P-00063S-00 for rsgb_lf_group@blacksheep.org; Mon, 22 Jan 2001 23:13:27 +0000 Message-ID: <000301c084c9$17440300$ee34893e@robing> From: "Robin T. Greenwood" To: rsgb_lf_group@blacksheep.org References: <015c01c0823d$a5506820$4959fd3e@compaq> Subject: LF: Interference reduction. Date: Mon, 22 Jan 2001 23:13:19 -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: There are often complaints about interference, both local electrical/electronic, and distant signals which impinge upon the desired signal. Loops abound but seem not to be the "final solution" for DX ! I have for many years succesfully used a simple 2element interferometer on the (almost)LF bands to phase out interfering signals. I am certain if used on 136KHz. this will assist in all cases of local QRN(M) but not certain whether it will help with distant QRM. The main problem for long distance QRM (Like Loran spurs) is adquate spacing for the two antenna for a satisfactory null. It would be possible to use a radio link for remote antennae. The other possibility is a big Adcock antenna and a goniometer system for anyone with the land?? Anyone have any thoughts?? Robin G3LBA