Return-Path: Received: (qmail 87268 invoked from network); 11 Feb 2004 17:28:49 -0000 Received: from unknown (HELO ptb-mxscan01.plus.net) (212.159.14.235) by ptb-mailstore01.plus.net with SMTP; 11 Feb 2004 17:28:49 -0000 Received: (qmail 91855 invoked from network); 11 Feb 2004 17:30:08 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 X-Priority: 3 X-MSMail-Priority: Normal Received: from ptb-mxcore01.plus.net (212.159.14.215) by ptb-mxscan01.plus.net with SMTP; 11 Feb 2004 17:30:07 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1AqyBb-000NlV-IJ for dave@picks.force9.co.uk; Wed, 11 Feb 2004 17:30:07 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AqyAi-0004sB-21 for rs_out@blacksheep.org; Wed, 11 Feb 2004 17:29:12 +0000 Received: from [144.254.74.5] (helo=ams-iport-1.cisco.com) by post.thorcom.com with esmtp (Exim 4.14) id 1AqyAh-0004rv-AH for rsgb_lf_group@blacksheep.org; Wed, 11 Feb 2004 17:29:11 +0000 Received: from virgin.net (144.254.74.60) by ams-iport-1.cisco.com with ESMTP; 11 Feb 2004 18:29:16 +0100 Received: from cisco.com (mrwint.cisco.com [64.103.71.48]) by ams-msg-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id i1BHSFL1024393 for ; Wed, 11 Feb 2004 18:28:16 +0100 (MET) Received: from virgin.net (dhcp-rea-gp250-64-103-65-193.cisco.com [64.103.65.193]) by cisco.com (8.8.8/2.6/Cisco List Logging/8.8.8) with ESMTP id RAA23118 for ; Wed, 11 Feb 2004 17:28:38 GMT Message-ID: <402A6646.4030006@virgin.net> Date: Wed, 11 Feb 2004 17:28:38 +0000 From: "Stewart Bryant" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <20040210184134.KTHX20454.tomts35-srv.bellnexxia.net@smtp.bellnexxia.net> In-reply-to: <20040210184134.KTHX20454.tomts35-srv.bellnexxia.net@smtp.bellnexxia.net> Subject: Re: LF: Timing GPS Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 1 If GPS is not an option, then NTP (clock timing via the Internet) might be an alternative. There is some info on accuracy at http://www.ntp.org/ntpfaq/NTP-s-algo.htm#AEN2361 - Stewart G3YSX kayser@sympatico.ca wrote: > Greetings All: > > >>Judging by the lack of replies to this thread - there seems little interest >>here. A very great pity, as accurate GPS locked timing is the next great >>improvement we could make to LF signalling. > > > This discussion is exciting. Please, if this moves forward make the system a general design that can be moved around and configured for different uses beyond LF. I also encourge that the system be useable for extremely weak signals and also for very short duration burst signals simultaneously. Wouldn't be great if the worlds propagation beacons on all bands could be upgraded to allow effective 24x7 monitoring of the signals. > > Larry > VA3LK > > > >