Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd02.r1000.mx.aol.com (Internet Inbound) with ESMTP id C1C77380003D0; Fri, 21 Oct 2011 15:49:20 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RHL52-00088S-Am for rs_out_1@blacksheep.org; Fri, 21 Oct 2011 20:48:36 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RHL51-00088J-Rk for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2011 20:48:35 +0100 Received: from mail-vx0-f171.google.com ([209.85.220.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RHL4z-0006fx-Jw for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2011 20:48:35 +0100 Received: by vcbfk13 with SMTP id fk13so6273583vcb.16 for ; Fri, 21 Oct 2011 12:48:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; bh=rylK01kHGRaos5ftyNWLSawQ+8mc3CpbOMMVtZLkq9Q=; b=UGBOK6QwQtL57gIPaQsyrwHw7MUTpvE7YCbZNkpThZXmjk28bXn6rWSpL+IfOTcBxP SxsCYUyJOefuliaX8mkrtLxyy9r7wZE9I0RtdpFiF1pI5Pwb2waxtTnU0fKEFMybSQVD TUZ5QDe3sE1xCdOw4uLaRfxaAw7uPaWX64d/Q= MIME-Version: 1.0 Received: by 10.52.30.194 with SMTP id u2mr15429024vdh.13.1319226506781; Fri, 21 Oct 2011 12:48:26 -0700 (PDT) Received: by 10.220.203.193 with HTTP; Fri, 21 Oct 2011 12:48:26 -0700 (PDT) In-Reply-To: References: Date: Fri, 21 Oct 2011 20:48:26 +0100 X-Google-Sender-Auth: 8zmqhpYOhfUchImmQTrsyTkTM1Q Message-ID: From: Gary - G4WGT To: rsgb_lf_group@blacksheep.org 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=bcaec51d281050a40304afd45b80 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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: 0:2:499849408:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m007.1 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d408e4ea1ccc07de4 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --bcaec51d281050a40304afd45b80 Content-Type: text/plain; charset=ISO-8859-1 Hi Marcus, Thanks for your very informative reply, this is very helpful. I have also had a reply from Lubos, OK2BVG who also sent me some useful information. 73 & thanks to you both. Gary - G4WGT. On 21 October 2011 20:09, Markus Vester wrote: > ** > 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 > 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 > *Sent:* Friday, October 21, 2011 4:37 PM > *To:* LF Group (RSGB) > *Subject:* LF: Anthorn UK, Loran. > > Hi All, > > 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. > --bcaec51d281050a40304afd45b80 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Marcus,

Thanks for your very informative reply, this = is very helpful. I have also had a reply from Lubos, OK2BVG who also sent m= e some useful information.

73 & thanks to you = both.

Gary - G4WGT.


On 21 October 2011 20:09, Markus Vester <markusvester@aol.com= > wrote:
Gary, LF,
=A0
Anthorn is designated=A0"6731Y&qu= ot;,=A0which says=20 that=A0it is running a pulsegroup repetition interval (GRI) of=A06731=20 carrier periods (ie. 67.31 milliseconds). There is a=A0phasecoding=20 scheme=A0that alternates phases on every second pulsegroup, thus the=20 periodicity is really 2x GRI. So all the spectral lines are precisely at=20 multiples of=A0
=A0100 kHz / 2 / 6731 ~ 7,= 4283167434=20 Hz.
Lessay is running dual-rated=A0on both= 6731 and=20 7499, so it has an additional set of lines=A0with 6,6675556741 Hz spacing.= =20 During the night, you might also see much weaker lines from Ejde on GRI=20 9007.
=A0
Best 73,
Markus (DF6NM)
Sent: Friday, October 21, 2011 4:37 PM
Subject: LF: Anthorn UK, Loran.

Hi All,=20

Can someone give my the formula for calculating the spot frequencies o= f=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 calc= ulator. I=20 need to know if they are Loran or something generated locally. The lines ar= e=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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