Return-Path: Received: (qmail 16723 invoked from network); 10 Jul 2001 16:04:26 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 10 Jul 2001 16:04:26 -0000 Received: (qmail 16202 invoked from network); 10 Jul 2001 16:03:25 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 10 Jul 2001 16:03:25 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15JzpP-0001o7-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 10 Jul 2001 16:53:35 +0100 Received: from carbon.btinternet.com ([194.73.73.92]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15JzpO-0001o2-00 for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2001 16:53:34 +0100 Received: from [213.122.43.48] (helo=default) by carbon.btinternet.com with smtp (Exim 3.22 #9) id 15Jzoi-0004dF-00 for rsgb_lf_group@blacksheep.org; Tue, 10 Jul 2001 16:52:53 +0100 Message-ID: <003601c10961$5f19f960$16ae7ad5@default> From: "Fred Rattray" To: "Lf Group" References: <3B4A2079.F677BBE4@netins.net> Subject: LF: Re: Cave Radio Date: Tue, 10 Jul 2001 16:54:32 -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: Check out my web site at http://www.caving.btinternet.co.uk There is a little about cave radio beacons for radio location and depth finding. Also there is a brief explanation of a positioning system I have called SNAP which is short for Speliogical Navigation And Positioning, and a brief report on 73Khz SSTV from underground. Regards Fred Rattray G4SPR ----- Original Message ----- From: "Dr. Tom Gruis" To: Sent: 09 July 2001 21:22 Subject: LF: Cave Radio > Helllo from Iowa, USA. > > I seem to recall an earlier thread about Cave Radio on this reflector. > > I made note of this URL: http://www.bcra.org.uk/sig/creg.html > > Are there any more out there? > > 73, > > Doc. >