Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg05.r1000.mx.aol.com (Internet Inbound) with ESMTP id EB70D380000B0; Mon, 1 Aug 2011 13:17:54 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qnw6y-0003u6-Pg for rs_out_1@blacksheep.org; Mon, 01 Aug 2011 18:17:04 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qnw6y-0003tx-7Z for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 18:17:04 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qnw6w-0005Bq-2V for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 18:17:04 +0100 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p71HH1cp013212 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 19:17:01 +0200 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p71HH0er003996 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 19:17:01 +0200 Received: from [129.206.205.128] (vpn205-128.rzuser.uni-heidelberg.de [129.206.205.128]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id p71HGxOl009616 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 19:17:00 +0200 Message-ID: <4E36DF90.1090708@iup.uni-heidelberg.de> Date: Mon, 01 Aug 2011 19:17:04 +0200 From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4E368591.40301@iup.uni-heidelberg.de> <8CE1E5DBCD95790-2268-41A68@webmail-m050.sysops.aol.com> In-Reply-To: <8CE1E5DBCD95790-2268-41A68@webmail-m050.sysops.aol.com> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: strange transmissions Content-Type: multipart/alternative; boundary="------------070308020406080407040906" 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=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: 1:2:423611296:93952408 X-AOL-SCOLL-URL_COUNT: 1 x-aol-sid: 3039ac1d60cd4e36dfc217f8 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------070308020406080407040906 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p71HH1cp013212 Hi Markus, Another thing that appears strange to me, if these signals should have=20 come from the Alpha transmitters: On the TF3HZ grabber you can clearly=20 see that the "strange" transmissions have been significantly stronger=20 than the Alphas! Visible by color... Ant the traces of RSDN-20 haven't=20 become darker turing these times...? HW? 73, Stefan Am 01.08.2011 14:29, schrieb Markus Vester: > Hi Stefan, > three of the frequencies seem to be the alternate frequency set of the=20 > Alpha (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, > Markus (DF6NM) > > -----Urspr=C3=BCngliche Mitteilung----- > 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 > band, very strong here in Heidelberg > http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html a= nd > also in Iceland > http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html, also very > clear athttp://www.ok2bvg.cz/vlfgrabber/ and others. > > Does anybody know what it is? Looks different to the often seen > staircases during transmitter tests... > > Unfortunately many VLF grabbers are paused / OFF these times... > > 73, Stefan/DK7FC > --------------070308020406080407040906 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p71HH1cp013212 Hi Markus,

Another thing that appears strange to me, if these signals should have come from the Alpha transmitters: On the TF3HZ grabber you can clearly see that the "strange" transmissions have been significantly stronger than the Alphas! Visible by color... Ant the traces of RSDN-20 haven't become darker turing these times...?

HW?

73, Stefan

Am 01.08.2011 14:29, schrieb Markus Vester:
Hi Stefan,
=C2=A0
three of the frequencies seem to=C2=A0be the alternate frequency s= et of the Alpha (RSDN 20) navaids, mentioned on
=C2=A0
F6=C2=A0 12500.00000=C2=A0 Hz =3D 16 x 781.25 Hz
F7=C2=A0 13281.25000=C2=A0 Hz =3D 17 x 781.25 Hz
F8=C2=A0 15625.00000=C2=A0 Hz =3D 20 x 781.25 Hz
=C2=A0
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><= /a>
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_VL=
F_Grabber.html and=20
also in Iceland=20
http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/inde=
x.html, also very=20
clear at http://www.o=
k2bvg.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
--------------070308020406080407040906--