Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0AF093800063D; Fri, 21 Oct 2011 15:11:14 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RHKTK-00080J-Kx for rs_out_1@blacksheep.org; Fri, 21 Oct 2011 20:09:38 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RHKTJ-00080A-B5 for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2011 20:09:37 +0100 Received: from imr-mb02.mx.aol.com ([64.12.207.163]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RHKTH-0006UY-E1 for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2011 20:09:37 +0100 Received: from mtaout-db05.r1000.mx.aol.com (mtaout-db05.r1000.mx.aol.com [172.29.51.197]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p9LJ9G4Z023204 for ; Fri, 21 Oct 2011 15:09:16 -0400 Received: from White (nrbg-4d074ae9.pool.mediaWays.net [77.7.74.233]) by mtaout-db05.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id E62F9E00010D for ; Fri, 21 Oct 2011 15:09:13 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: Date: Fri, 21 Oct 2011 21:09:32 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-AOL-SCOLL-SCORE: 0:2:445726432:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Anthorn UK, Loran. Content-Type: multipart/alternative; boundary="----=_NextPart_000_0017_01CC9035.BABA4DE0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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: 0:2:484813760:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40914ea1c3d259b1 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0017_01CC9035.BABA4DE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Gary, LF, Anthorn is designated "6731Y", which says that it is running a = pulsegroup repetition interval (GRI) of 6731 carrier periods (ie. 67.31 = milliseconds). There is a phasecoding scheme that alternates phases on = every second pulsegroup, thus the periodicity is really 2x GRI. So all = the spectral lines are precisely at multiples of=20 100 kHz / 2 / 6731 ~ 7,4283167434 Hz. Lessay is running dual-rated on both 6731 and 7499, so it has an = additional set of lines with 6,6675556741 Hz spacing. During the night, = you might also see much weaker lines from Ejde on GRI 9007. Best 73, Markus (DF6NM) From: Gary - G4WGT=20 Sent: Friday, October 21, 2011 4:37 PM To: LF Group (RSGB)=20 Subject: LF: Anthorn UK, Loran. Hi All,=20 Can someone give my the formula for calculating the spot frequencies of = Loran as generated by Anthorn, UK. I am testing a uHz SpecLab display using Stefan's 137kHz soundcard = receiver & I am seeing lines which don't match with my old spread sheet = calculator. I need to know if they are Loran or something generated = locally. The lines are very straight so its difficult to judge. Or, if anyone has a better idea I am open to suggestions. 73, Gary - G4WGT. ------=_NextPart_000_0017_01CC9035.BABA4DE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Gary, LF,
 
Anthorn is = designated "6731Y", which says=20 that it is running a pulsegroup repetition interval (GRI) = of 6731=20 carrier periods (ie. 67.31 milliseconds). There is a phasecoding=20 scheme that alternates phases on every second pulsegroup, thus the=20 periodicity is really 2x GRI. So all the spectral lines are precisely at = multiples of 
 100 kHz / 2 / 6731 ~ = 7,4283167434=20 Hz.
Lessay is running dual-rated on = both 6731 and=20 7499, so it has an additional set of lines with 6,6675556741 Hz = spacing.=20 During the night, you might also see much weaker lines from Ejde on GRI=20 9007.
 
Best 73,
Markus (DF6NM)
From: Gary - G4WGT
Sent: Friday, October 21, 2011 4:37 PM
To: LF Group (RSGB)
Subject: LF: Anthorn UK, Loran.

Hi All,=20

Can someone give my the formula for calculating the spot = frequencies of=20 Loran as generated by Anthorn, UK.

I am testing a uHz SpecLab display using Stefan's 137kHz soundcard = receiver=20 & I am seeing lines which don't match with my old spread sheet = calculator. I=20 need to know if they are Loran or something generated locally. The lines = are=20 very straight so its difficult to judge.

Or, if anyone has a better idea I am open to suggestions.

73, Gary - G4WGT.
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