Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4U9GVpt031416 for ; Tue, 30 May 2017 11:16:32 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dFdCM-00019H-UE for rs_out_1@blacksheep.org; Tue, 30 May 2017 10:12:18 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dFdCM-000198-AM for rsgb_lf_group@blacksheep.org; Tue, 30 May 2017 10:12:18 +0100 Received: from mx1.inta.es ([130.206.91.42]) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from ) id 1dFdCG-0004O7-Ul for rsgb_lf_group@blacksheep.org; Tue, 30 May 2017 10:12:17 +0100 Received: from mail.inta.es (unknown [172.17.50.61]) by mx1.inta.es (Postfix) with ESMTP id 8EAADBFCFC for ; Tue, 30 May 2017 11:12:11 +0200 (CEST) Received: from INTAMEX10.inta.es ([fe80::a832:e648:970e:f78f]) by INTAMEX60.inta.es ([::1]) with mapi id 14.03.0146.000; Tue, 30 May 2017 11:12:11 +0200 From: =?iso-8859-1?Q?Manuel_Carbonell_Alan=EDs?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: Four signals on 38.0, 40.4, 42.5, 44.2 kHz - what are they? Thread-Index: AQHS2K2E8reIAE2INUuR90sQWPSWQKIMl2+O Date: Tue, 30 May 2017 09:12:11 +0000 Message-ID: <8C1C0075F3A767409EE14E6BCD68AAAC017723DECF@INTAMEX10.inta.es> References: <15c55902869-6343-1b8ef@webprd-m39.mail.aol.com> In-Reply-To: <15c55902869-6343-1b8ef@webprd-m39.mail.aol.com> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.17.6.28] MIME-Version: 1.0 X-Scan-Signature: 1273381c241b4bc851b7e848e0897dc9 Subject: LF: Re: Four signals on 38.0, 40.4, 42.5, 44.2 kHz - what are they? Content-Type: multipart/alternative; boundary="_000_8C1C0075F3A767409EE14E6BCD68AAAC017723DECFINTAMEX10inta_" 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-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 11829 --_000_8C1C0075F3A767409EE14E6BCD68AAAC017723DECFINTAMEX10inta_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear friends: I think, the signals in 38.0, 40.4 and 44.2 could be Swedish Navy. The last= time I listen them was on Nov-15, with 38.0 and 44.2 kHz in parallel (on/o= ff at same time) 73 de -Manuel Carbonell- (EC4AA) ________________________________ De: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org]= en nombre de Markus Vester [markusvester@aol.com] Enviado: lunes, 29 de mayo de 2017 20:55 Para: rsgb_lf_group@blacksheep.org Asunto: LF: Four signals on 38.0, 40.4, 42.5, 44.2 kHz - what are they? Bernd DF9RB from the DL0AO team proposed extending the display range of the= wideband grabbers to 48 kHz: http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm Thereafter, we stumbled upon four unidentified strips on 38.0, 40.4, 42.5, = 44.2 kHz. My first thought was that these must be local interference. But i= t turned out that they show pronounced nighttime fading, and they are also = visible on Peter's grabber in Kiel: http://lf-radio.de/cgi-bin/ki/show_wf.cgi?date=3D17-05-26 All four frequencies carry the same 200 Hz wide spectrum. Zooming in exhibi= ts a fine structure consisting of a number of closely spaced discrete lines= , suggesting modulation with a constantly repeating bit pattern (see second= grabber window at DL0AO). There are occasional bursts where the signal goe= s up by 10 dB for several ten minutes, like yesterday around 21 UT. The red= or purple colour-DF would indicate arrival from East or Northeast. Any ideas what these may be? 73, Markus (DF6NM) --_000_8C1C0075F3A767409EE14E6BCD68AAAC017723DECFINTAMEX10inta_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear frien= ds:

I think, t= he signals in 38.0, 40.4 and 44.2 could be Swedish Navy. The last time I li= sten them was on Nov-15, with 38.0 and 44.2 kHz in parallel (on/off at same= time)

73 de


  &nb= sp;                     &= nbsp;           -Manuel Carbonell-
  &nb= sp;                     &= nbsp;                 (EC4AA)


De: owner-rsgb_lf_group@blacksheep.org [o= wner-rsgb_lf_group@blacksheep.org] en nombre de Markus Vester [markusvester= @aol.com]
Enviado: lunes, 29 de mayo de 2017 20:55
Para: rsgb_lf_group@blacksheep.org
Asunto: LF: Four signals on 38.0, 40.4, 42.5, 44.2 kHz - what are th= ey?

Bernd DF9RB from the DL0AO team proposed extending the display rang= e of the wideband grabbers to 48 kHz:
 http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm
Thereafter, we stumbled upon four unidentified strips on 38.0, 40= .4, 42.5, 44.2 kHz. My first thought was that these must be local interfere= nce. But it turned out that they show pronounced nighttime fading, and=  they are also visible on Peter's grabber in Kiel:
 http://lf-radio.de/cgi-bin/ki/show_wf.cgi?date=3D17-05-26

All four frequencies carry the same 200 Hz wide spectrum. Zooming in e= xhibits a fine structure consisting of a number of closely s= paced discrete lines, suggesting modulation with a constantly repeatin= g bit pattern (see second grabber window at DL0AO). There are occasional bursts where the signal goes up by 10 dB for=  several ten minutes, like yesterday around 21 UT. The red o= r purple colour-DF would indicate arrival from East or Northeast.

Any ideas what these may be?

73, Markus (DF6NM)

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