Return-Path: Received: (qmail 73590 invoked from network); 2 Nov 2004 08:04:30 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore02.plus.net with SMTP; 2 Nov 2004 08:04:30 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1COtta-0009ps-1r for dave@picks.force9.co.uk; Tue, 02 Nov 2004 08:20:02 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1COttZ-0009pp-Va for dave@picks.force9.co.uk; Tue, 02 Nov 2004 08:20:01 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1COteX-0002Yc-FP for dave@picks.force9.co.uk; Tue, 02 Nov 2004 08:04:29 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1COtdh-0002wE-Me for rs_out_1@blacksheep.org; Tue, 02 Nov 2004 08:03:37 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1COtdh-0002w5-C7 for rsgb_lf_group@blacksheep.org; Tue, 02 Nov 2004 08:03:37 +0000 Received: from mailout.zetnet.co.uk ([194.247.47.231]) by relay.thorcom.net with esmtp (Exim 4.41) id 1COtdd-00026C-VW for rsgb_lf_group@blacksheep.org; Tue, 02 Nov 2004 08:03:37 +0000 Received: from irwell.zetnet.co.uk ([194.247.47.48] helo=zetnet.co.uk) by mailout.zetnet.co.uk with esmtp (Exim 3.36 #1 (Debian)) id 1COtdd-0002hj-00 for ; Tue, 02 Nov 2004 08:03:33 +0000 Received: from john-b5a82ea1a4 (bts-0426.dialup.zetnet.co.uk [194.247.49.170]) by zetnet.co.uk (8.12.11/8.12.11/Debian-5) with ESMTP id iA283RZ2016850 for ; Tue, 2 Nov 2004 08:03:32 GMT Message-ID: <200411020803250204.1F0AE5CA@mail.zetnet.co.uk> In-Reply-To: <4186F5A2.9080706@zen.co.uk> References: <4186F5A2.9080706@zen.co.uk> X-Mailer: Courier 3.50.00.09.1098 (http://www.rosecitysoftware.com) (K) Date: Tue, 02 Nov 2004 08:03:25 +0000 From: "John Rabson" To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-SPF-Result: relay.thorcom.net: 194.247.47.231 is neither permitted nor denied by domain of zetnet.co.uk X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=no,RCVD_IN_SORBS=0.1 Subject: Re[2]: LF: Rugby Loran station Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com 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 X-Spam-Filtered: by PlusNet SpamCORE (v3.00) On 02/11/2004 at 02:49 Stewart Bryant wrote: >How diffiicult would it be to make a Loran gate to put in front of theRX? >After all the station is fixed so you must, in principle, know when the >pulses are due. The trouble is there isn't just one station. On 87kHz cave radios we often receive several Loran stations from different directions. People are looking at various solutions: time domain filters, frequency domain filters, Gates [no - _gates_ - this cough is mucking up my dictation software], even directional antennas. And application of Dr Nobel's linctus is not permitted. Further ideas would be welcome. John G3PAI Cave Radio & Electronics Group