Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 758B03800005B; Mon, 1 Aug 2011 08:30:31 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QnrcS-00020I-Ln for rs_out_1@blacksheep.org; Mon, 01 Aug 2011 13:29:16 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QnrcS-000209-6P for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 13:29:16 +0100 Received: from imr-ma04.mx.aol.com ([64.12.206.42]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QnrcP-0008Ad-Il for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 13:29:16 +0100 Received: from mtaomg-db01.r1000.mx.aol.com (mtaomg-db01.r1000.mx.aol.com [172.29.51.199]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p71CT7UO016467 for ; Mon, 1 Aug 2011 08:29:07 -0400 Received: from core-msc002a.r1000.mail.aol.com (core-msc002.r1000.mail.aol.com [172.29.233.197]) by mtaomg-db01.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id C78EEE000082 for ; Mon, 1 Aug 2011 08:29:05 -0400 (EDT) References: <4E368591.40301@iup.uni-heidelberg.de> To: rsgb_lf_group@blacksheep.org In-Reply-To: <4E368591.40301@iup.uni-heidelberg.de> X-MB-Message-Source: WebUI MIME-Version: 1.0 From: Markus Vester X-MB-Message-Type: User X-Mailer: AOL Webmail 33996-STANDARD Received: from 194.138.39.62 by webmail-m050.sysops.aol.com (64.12.101.82) with HTTP (WebMailUI); Mon, 01 Aug 2011 08:29:05 -0400 Message-Id: <8CE1E5DBCD95790-2268-41A68@webmail-m050.sysops.aol.com> X-Originating-IP: [194.138.39.62] Date: Mon, 1 Aug 2011 08:29:05 -0400 (EDT) X-AOL-SCOLL-SCORE: 1:2:392148736:93952408 X-AOL-SCOLL-URL_COUNT: 1 X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=disabled,FORGED_AOL_TAGS=0.281,HTML_MESSAGE=0.001,UNPARSEABLE_RELAY=0.001 Subject: Re: VLF: strange transmissions Content-Type: multipart/alternative; boundary="--------MB_8CE1E5DBCEA01CA_2268_8CB17_webmail-m050.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=1.1 required=5.0 tests=FORGED_AOL_TAGS,HTML_30_40, HTML_FONTCOLOR_BLUE,HTML_FONTCOLOR_GREEN,HTML_FONTCOLOR_UNKNOWN, 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: 1:2:447075744:93952408 X-AOL-SCOLL-URL_COUNT: 1 x-aol-sid: 3039ac1d604e4e369c67234e X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ----------MB_8CE1E5DBCEA01CA_2268_8CB17_webmail-m050.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Hi Stefan, three of the frequencies seem to be the alternate frequency set of the Alph= a (RSDN 20) navaids, mentioned on http://www.vlf.it/alphatrond/alpha.htm F6 12500.00000 Hz =3D 16 x 781.25 Hz F7 13281.25000 Hz =3D 17 x 781.25 Hz F8 15625.00000 Hz =3D 20 x 781.25 Hz There also seems to be another one somewhere around 12.75 kHz. Best regards,=20 Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Stefan Sch=C3=A4fer An: rsgb_lf_group Verschickt: Mo., 1. Aug. 2011, 12:55 Betreff: VLF: strange transmissions VLF, There are strange transmissions near 12.4, 13.3 and 15.6 kHz, narrow=20 and, very strong here in Heidelberg=20 ttp://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and=20 lso in Iceland=20 ttp://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html, also very=20 lear at http://www.ok2bvg.cz/vlfgrabber/ and others. Does anybody know what it is? Looks different to the often seen=20 taircases during transmitter tests... Unfortunately many VLF grabbers are paused / OFF these times... 73, Stefan/DK7FC ----------MB_8CE1E5DBCEA01CA_2268_8CB17_webmail-m050.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Hi Stefan,
 
three of the frequencies seem to be the alternate frequency set o= f the Alpha (RSDN 20) navaids, mentioned on
 
F6  12500.00000  Hz =3D 16 x 781.2= 5 Hz
F7  13281.25000  Hz =3D 17 x 781.2= 5 Hz
F8  15625.00000  Hz =3D 20 x 781.2= 5 Hz
 
There also seems to be another one somewhere around 12.75 kHz.
Best regards,
Markus (DF6NM)

= -----Urspr=C3=BCngliche Mitteilung-----
Von: Stefan Sch=C3=A4fer <schaefer@iup.uni-heidelberg.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mo., 1. Aug. 2011, 12:55
Betreff: VLF: strange transmissions

VLF,

There are strange transmissions near 12.4, 13.3 and 15.6 kHz, narrow=20
band, very strong here in Heidelberg=20
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_V=
LF_Grabber.html and=20
also in Iceland=20
http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html<=
/A>, also very=20
clear at http:=
//www.ok2bvg.cz/vlfgrabber/ and others.

Does anybody know what it is? Looks different to the often seen=20
staircases during transmitter tests...

Unfortunately many VLF grabbers are paused / OFF these times...

73, Stefan/DK7FC
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