Return-Path: Received: (qmail 1664 invoked from network); 1 Dec 2001 00:10:43 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 1 Dec 2001 00:10:43 -0000 Received: (qmail 17054 invoked from network); 1 Dec 2001 00:10:56 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 1 Dec 2001 00:10:56 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 169xi6-0006RN-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 01 Dec 2001 00:08:50 +0000 Received: from sun4.scgroup.com ([192.55.122.7]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 169xi4-0006RI-00 for rsgb_lf_group@blacksheep.org; Sat, 01 Dec 2001 00:08:49 +0000 Received: from parissn2 (AMontsouris-101-1-3-195.abo.wanadoo.fr [193.252.108.195]) by sun4.scgroup.com (8.9.1b+Sun/8.9.1) with SMTP id QAA29933 for ; Fri, 30 Nov 2001 16:07:39 -0800 (PST) Message-ID: <002501c179fb$f8965b00$0400000a@parissn2> From: "Stewart Nelson" To: rsgb_lf_group@blacksheep.org References: <3C0813D6.28D093B3@att.net> Subject: LF: Re: 75 kHz HBG +50db above noise in NC Date: Sat, 1 Dec 2001 01:06:03 +0100 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 6.00.2600.0000 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: Hi Dexter and all, > I'm presently watching 75 kHz time signal which is better than 50 db > above the noise in North Carolina. Radio Clock even shows the pluses > but will not lock up because of the 73.6 kHz RTTY signal being 50 db > stronger than HBG. Condx are the best I've seen yet this season. If you mean 50 dB above the noise in CW bandwidth or wider, wow! HBG's power is "only" 20 kW, see http://www.metas.ch/en/labors/official-time/hgb/tech_d.html , so a 200 mW signal would be 50 dB weaker, and likely readable even with normal CW. Reception would be easy with any sort of QRSS. Also, is the following about the FSK signals correct? On about 73.6 kHz is CFH (75 Hz shift and 75 BPS) and on about 73.3 kHz is Rugby (100 Hz shift and 100 BPS). 73, Stewart