Return-Path: Received: from rly-me03.mx.aol.com (rly-me03.mail.aol.com [172.20.83.36]) by air-me01.mail.aol.com (v121_r4.4) with ESMTP id MAILINME013-9ab496f0b8c2d3; Thu, 15 Jan 2009 05:10:43 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me03.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINME037-9ab496f0b8c2d3; Thu, 15 Jan 2009 05:10:23 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LNPAS-0000VI-F8 for rs_out_1@blacksheep.org; Thu, 15 Jan 2009 10:09:40 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LNPAQ-0000V9-ON for rsgb_lf_group@blacksheep.org; Thu, 15 Jan 2009 10:09:39 +0000 Received: from imo-d20.mx.aol.com ([205.188.139.136]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LNPAM-0005oU-DT for rsgb_lf_group@blacksheep.org; Thu, 15 Jan 2009 10:09:37 +0000 Received: from MarkusVester@aol.com by imo-d20.mx.aol.com (mail_out_v39.1.) id l.c23.5454d6dc (37127) for ; Thu, 15 Jan 2009 05:09:21 -0500 (EST) Received: from smtprly-mb03.mx.aol.com (smtprly-mb03.mx.aol.com [64.12.207.150]) by cia-ma02.mx.aol.com (v121_r5.5) with ESMTP id MAILCIAMA021-5c6e496f0b4c2f6; Thu, 15 Jan 2009 05:09:22 -0500 Received: from webmail-me19 (webmail-me19.webmail.aol.com [64.12.88.211]) by smtprly-mb03.mx.aol.com (v121_r5.5) with ESMTP id MAILSMTPRLYMB034-5c6e496f0b4c2f6; Thu, 15 Jan 2009 05:09:16 -0500 References: <496E6B45.5020100@usa.net><0F3DBBAC61C545AE85525CD884B642EC@Black><20090114231729.6b8aea4f@lurcher><2AD1A31DF27448F495C0CE7FF33CE9DE@Black><1E6D0A88C4DE49E5A2AF05911187E7A3@Black><89A232DF7CE7420380CD8B9E9AE1FA79@Black> <200901151030330189.01958C21@smtp.wanadoo.fr> To: rsgb_lf_group@blacksheep.org Date: Thu, 15 Jan 2009 05:09:16 -0500 In-Reply-To: <200901151030330189.01958C21@smtp.wanadoo.fr> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: Markus Vester X-MB-Message-Type: User X-Mailer: AOL Webmail 40627-STANDARD Received: from 217.194.34.103 by webmail-me19.sysops.aol.com (64.12.88.211) with HTTP (WebMailUI); Thu, 15 Jan 2009 05:09:16 -0500 Message-Id: <8CB4510752DB0AC-F34-1FEF@webmail-me19.sysops.aol.com> X-Spam-Flag:NO X-Spam-Score: -0.3 (/) X-Spam-Report: autolearn=disabled,AWL=-0.564,FORGED_AOL_TAGS=0.281,HTML_MESSAGE=0.001,UNPARSEABLE_RELAY=0.001 Subject: Re: LF: Re: Luxembourg Content-Type: multipart/alternative; boundary="--------MB_8CB451075373A20_F34_4226_webmail-me19.sysops.aol.com" 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=FORGED_AOL_TAGS,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-IP: 193.82.116.20 ----------MB_8CB451075373A20_F34_4226_webmail-me19.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" John and LF, what=C2=A0the ICM products=C2=A0look like in a spectrogram of course=C2=A0de= pends on the=C2=A0FFT resolution. The narrow events=C2=A0were created by=C2= =A0test tone modulation=C2=A0on the broadcast transmitter (probably 225 kHz=20= but I didn't listen).=C2=A0Such tones are=C2=A0often transmitted some time= =C2=A0after local midnight for a couple of minutes. The sub-Hz line=C2=A0lin= ewidth=C2=A0was probably=C2=A0defined=C2=A0by a slight=C2=A0audio frequency=20= drift of the tones,=C2=A0in addition to=C2=A0the=C2=A0 0.1 Hz broadening of=20= the=C2=A0DCF /HGA carriers themselves due to the FSK telegrams. The more typical musical tones=C2=A0create strips and patches that are sever= al Hz to tens of Hz wide. So they have a somewhat similar appearance, but on= a wider frequency and faster time scale.=C2=A0You can often see them on the= fullband panel of my colour DF grabber - red above HGA22 (135.43 kHz) and p= urple below DCF39 (138.83).=C2=A0However with=C2=A0millihertz resolution (e.= g. QRSS-60), they mostly=C2=A0appear as temporarily increased noise. 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: John RABSON An: rsgb_lf_group@blacksheep.org Verschickt: Do., 15. Jan. 2009, 10:30 Thema: Re: LF: Re: Luxembourg Markus, Lubos, Are these light-coloured patches a typical signature of this effect? I get=20= quite a lot of them here. John F5VLF *********** REPLY SEPARATOR *********** On 15/01/2009 at 03:32 Lubos OK2BVG wrote: >Hello Markus, LF! Many thanks for your info about Russian Loran (GRI 8000), it=C2=B4s this! Here is my picture of Luxembourg effec t in JN88KS. Very strong signal. Lubos, OK2BVG ************************************************** > From: markusvester@aol.com > To: rsgb_lf_group@blacksheep.org > Date: Thu, 15 Jan 2009 01:22:41 +0100 > Subject: LF: Re: Luxembourg >=20 > .. this is the cross modulation signature on the RN3AGC grabber. The pattern was also visible on F1AFJ's screen. - 73, Markus >=20 > ----- Original Message -----=20 > From: "Markus Vester" > To: > Sent: Thursday, January 15, 2009 12:52 AM > Subject: LF: Re: WSPR beacon on 136kHz, Luxembourg >=20 >=20 > The band is fairly quiet tonight. Twice for a few minutes around 23:23 and 23:33, there were strong Luxembourg sideband carriers > simultaneously on both HGA and DCF. They were apparently caused by a 1054 Hz sinusoidal modulation test tone (sidebands at 136.484, > 75 uV/m and 137.776 kHz, 13 uV/m). There was also a -20 dB second harmonic component (137.538, 6 uV/m and 136.722, 1.5 uV/m), due=20 > to > the square-law charasteristic of the heating effect. >=20 > Kind regards, > Marksu, DF6NM > =20 _________________________________________________________________ Pozvi sv=C3=A9 p=C5=99=C3=A1tele z Facebooku a Hotmailu do Messengeru! https://www.invite2messenger.net/Default.aspx ________________________________________________________________________ AOL eMail auf Ihrem Handy! Ab sofort k=C3=B6nnen Sie auch unterwegs Ihre AOL= email abrufen. Registrieren Sie sich jetzt kostenlos. ----------MB_8CB451075373A20_F34_4226_webmail-me19.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" John and LF,

what the ICM products look like in a spectrogram of course de= pends on the FFT resolution. The narrow events were created by&nbs= p;test tone modulation on the broadcast transmitter (probably 225 kHz b= ut I didn't listen). Such tones are often transmitted some time&nb= sp;after local midnight for a couple of minutes. The sub-Hz line linewi= dth was probably defined by a slight audio frequency dri= ft of the tones, in addition to the  0.1 Hz broadening of the=  DCF /HGA carriers themselves due to the FSK telegrams.

The more typical musical tones create strips and patches that are sever= al Hz to tens of Hz wide. So they have a somewhat similar appearance, but on= a wider frequency and faster time scale. You can often see them on the= fullband panel of my colour DF grabber - red above HGA22 (135.43 kHz) and p= urple below DCF39 (138.83). However with millihertz resolution (e.= g. QRSS-60), they mostly appear as temporarily increased noise.

73, Markus

-----Urspr=C3=BCngliche Mitteilung-----
Von: John RABSON <john.rabson@wanadoo.fr>
An: rsgb_lf_group@blacksheep.org
Verschickt: Do., 15. Jan. 2009, 10:30
Thema: Re: LF: Re: Luxembourg

Markus, L=
ubos,

Are these light-coloured patches a typical signature of this effect?  I get=20=
quite=3D2
0a lot of them here.

John F5VLF

*********** REPLY SEPARATOR  ***********

On 15/01/2009 at 03:32 Lubos OK2BVG wrote:

>Hello Markus, LF!
>Many thanks for your info about Russian Loran (GRI 8000), it=C2=B4s this=
!
>
>Here is my picture of Luxembourg effect in JN88KS. Very strong signal.
>
>Lubos, OK2BVG
>
>**************************************************
>
>> From: markusvester@aol.com<=
/A>
>> To: rsgb_lf_group@b=
lacksheep.org
>> Date: Thu, 15 Jan 2009 01:22:41 +0100
>> Subject: LF: Re: Luxembourg
>>=20
>> .. this is the cross modulation signature on the RN3AGC grabber. Th=
e
>pattern was also visible on F1AFJ's screen. - 73, Markus
>>=20
>> ----- Original Message -----=20
>> From: "Markus Vester" <m=
arkusvester@aol.com>
>> To: <rsgb_lf_gro=
up@blacksheep.org>
>> Sent: Thursday, January 15, 2009 12:52 AM
>> Subject: LF: Re: WSPR beacon on 136kHz, Luxembourg
>>=20
>>=20
>>  The band is fairly quiet tonight. Twice for a few minutes around 2=
3:23
>and 23:33, there were strong Luxembourg sideband carriers
>>  simultaneously on both HGA and DCF. They were apparently caused by=
 a
>1054 Hz sinusoidal modulation test tone (sidebands at 136.484,
>>  75 uV/m and 137.776 kHz, 13 uV/m). There was also a -20=3D2
0dB second
>harmonic component (137.538, 6 uV/m and 136.722, 1.5 uV/m), due=20
>> to
>>  the square-law charasteristic of the heating effect.
>>=20
>>  Kind regards,
>> Marksu, DF6NM
>> =20
>
>_________________________________________________________________
>Pozvi sv=C3=A9 p=C5=99=C3=A1tele z Facebooku a Hotmailu do Messengeru!
>https://www.invite2messenger.net/Default.aspx
AOL eMail auf Ihrem Handy!Ab sofort k=C3=B6nnen Sie auch unterwegs Ih= re AOL email abrufen. Registrieren Sie sich jetzt kostenlos.
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