Return-Path: Received: (qmail 29689 invoked from network); 22 Mar 2000 20:04:57 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 22 Mar 2000 20:04:57 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12XrHB-0007cb-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 22 Mar 2000 19:58:45 +0000 Received: from irwell.zetnet.co.uk ([194.247.47.48] ident=root) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12XrHA-0007cW-00 for rsgb_lf_group@blacksheep.org; Wed, 22 Mar 2000 19:58:44 +0000 Received: from oemcomputer (man-139.dialup.zetnet.co.uk [194.247.40.177]) by irwell.zetnet.co.uk (8.9.3/8.9.3/Debian/GNU) with SMTP id TAA10008 for ; Wed, 22 Mar 2000 19:58:32 GMT Message-ID: <000701bf9439$3601d640$b128f7c2@oemcomputer> From: "John Rabson" To: rsgb_lf_group@blacksheep.org References: <3.0.1.16.20000322114130.2e87f8a4@mail.cc.kuleuven.ac.be> <000001bf9437$6705aac0$b128f7c2@oemcomputer> Subject: Re: LF: RE: MSF (6O kHz) and DCF77 (77.5 kHz) Date: Wed, 22 Mar 2000 19:59:56 -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 5.00.2615.200 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: That should be CREG Journal. ----- Original Message ----- From: John Rabson To: Sent: Wednesday, March 22, 2000 7:34 PM Subject: Re: LF: RE: MSF (6O kHz) and DCF77 (77.5 kHz) > Thank you all for supplying the information I requested. May I explain what > is going on? > > Last weekend the British Cave Research Association's Cave Radio and > Electronics Group performed some tests in the Yorkshire Dales with a view to > finding, amongst other things, whether we could null out some of the > interference we experience with cave radios. > > The principal source of interference is LORAN C (known in cave radio circles > as The Galloping Horses) but this of course is a somewhat variable signal . > We use MSF and DCF as more nearly constant signals for testing the > directivity of our surface arrays . > > Our results should be published in the next issue of the correct a journal. > > 73 de > John Rabson G3PAI > > > > >