Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7841C38000160; Wed, 21 Mar 2012 11:06:55 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SAN75-0001jf-Ia for rs_out_1@blacksheep.org; Wed, 21 Mar 2012 15:06:11 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SAN74-0001jW-Qp for rsgb_lf_group@blacksheep.org; Wed, 21 Mar 2012 15:06:10 +0000 Received: from cmsout02.mbox.net ([165.212.64.32]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SAN72-00059O-VV for rsgb_lf_group@blacksheep.org; Wed, 21 Mar 2012 15:06:10 +0000 Received: from cmsout02.mbox.net (co02-lo [127.0.0.1]) by cmsout02.mbox.net (Postfix) with ESMTP id 831421344F1 for ; Wed, 21 Mar 2012 15:06:01 +0000 (GMT) X-USANET-Received: from cmsout02.mbox.net [127.0.0.1] by cmsout02.mbox.net via mtad (C8.MAIN.3.72B) with ESMTP id 842qcuPF73264M02; Wed, 21 Mar 2012 15:05:58 -0000 X-USANET-Routed: 3 gwsout-vs Q:bmvirus Received: from cmsapps04.cms.usa.net [165.212.11.133] by cmsout02.mbox.net via smtad (C8.MAIN.3.72B) with ESMTP id XID929qcuPF73666X02; Wed, 21 Mar 2012 15:05:57 -0000 X-USANET-Source: 165.212.11.133 IN dibene@usa.net cmsapps04.cms.usa.net X-USANET-MsgId: XID929qcuPF73666X02 Received: from [127.0.0.1] [151.55.5.54] by cmsapps04.cms.usa.net (ESMTPSA/dibene@usa.net) via mtad (C8.MAIN.3.72B) with ESMTPSA id 538qcuPF60368M40; Wed, 21 Mar 2012 15:05:57 -0000 X-USANET-Auth: 151.55.5.54 AUTH dibene@usa.net [127.0.0.1] Message-ID: <4F69EE52.6010801@usa.net> Date: Wed, 21 Mar 2012 16:05:54 +0100 From: Alberto di Bene User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20120312 Thunderbird/11.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org X-Enigmail-Version: 1.4 X-Antivirus: avast! (VPS 120321-0, 03/21/2012), Outbound message X-Antivirus-Status: Clean Z-USANET-MsgId: XID538qcuPF60368X40 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: LF: Loran and calibration Content-Type: multipart/alternative; boundary="------------080000070302040507050007" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=HTML_MESSAGE 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-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:422574976:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40494f69ee8f2ceb X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------080000070302040507050007 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I remember reading a few years ago on this group a message saying that if the Loran signals are demodulated with an AM detector, a few lines should result, whose precision is independent from the frequency (in)accuracy of the receiver, but is directly tied to the Loran specs, and could be used to calibrate the frequency display of the receiver. Could please somebody recap that for me ? I am unable to find that message again. What I am observing, receiving the Loran signals at 100 kHz and using an AM demodulator, are a few steady lines, one of which being at 1004.70 Hz, quite stable, even in a 700 =B5Hz bandwidth. What should be its theoretical value, based on what written above ? TNX 73 Alberto I2PHD --------------080000070302040507050007 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I remember reading a few years ago on this grou= p a message
saying that if the Loran signals are demodulated with an AM detector,
a few lines should result, whose precision is independent from the<= br> frequency (in)accuracy of the receiver, but is directly tied to the Loran specs, and could be used to calibrate the frequency display
of the receiver.

Could please somebody recap that for me ? I am unable to find that<= br> message again.=A0=A0 What I am observing, receiving the Loran signa= ls at
100 kHz and using an AM demodulator, are a few steady lines, one of
which being at 1004.70 Hz, quite stable, even in a 700 =B5Hz bandwidth.

What should be its theoretical value, based on what written above ?

TNX

73=A0 Alberto=A0 I2PHD

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