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[195.171.43.25]) by mx.google.com with ESMTP id s10si2319946wja.9.2014.03.13.13.08.48 for ; Thu, 13 Mar 2014 13:08:49 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@mx.aol.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WOBXb-0001Pf-4l for rs_out_1@blacksheep.org; Thu, 13 Mar 2014 19:43:43 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WOBXa-0001PW-Lk for rsgb_lf_group@blacksheep.org; Thu, 13 Mar 2014 19:43:42 +0000 Received: from omr-m03.mx.aol.com ([64.12.143.77]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1WOBXX-0001Ck-HW for rsgb_lf_group@blacksheep.org; Thu, 13 Mar 2014 19:43:41 +0000 Received: from mtaout-mca01.mx.aol.com (mtaout-mca01.mx.aol.com [172.26.221.77]) by omr-m03.mx.aol.com (Outbound Mail Relay) with ESMTP id 7D78A70036222 for ; Thu, 13 Mar 2014 15:43:36 -0400 (EDT) Received: from White (95-91-237-52-dynip.superkabel.de [95.91.237.52]) by mtaout-mca01.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 873A738000093 for ; Thu, 13 Mar 2014 15:43:33 -0400 (EDT) Message-ID: <4E07D2537860422090058CBC1A75169C@White> From: "Markus Vester" To: References: <455D99C8B2F248A2AF6782406D881EE9@White> Date: Thu, 13 Mar 2014 20:42:42 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1394739816; bh=5jKSlISylVJcLtsTO29ugr9zoHb6c5PAak97v/F6euM=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=TH9He5b3Os1kF2+Z+qJk06jqARwHWDwbPMpcgKjMQkP2E5T2aaX4LNpdyy1/79jWI iNZ/TXZkkeMAMiL5j5uqnAfGxIqR5XK87eeBcPd0jVksqUeDmabG/bUd6Ox5F7ZUb7 ltJPZpsrSs2vRJ9BWbcGsBGFI8nRWglUMPOPBu1Y= x-aol-sid: 3039ac1add4d53220a652f36 X-AOL-IP: 95.91.237.52 X-Spam-Score: 1.0 (+) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Laura, don't know for sure whether it's the same site, I was hoping someone in the group might have more information. This afternoon, Paul Nicholson's http://abelian.org/vlf/spectrum.shtml showed similar azimuth, -48 degrees for 18.3 kHz and -44 for 21.75 kHz. [...] Content analysis details: (1.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [64.12.143.77 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: 84016abdd353c82964b6d256164a353f Subject: Re: VLF: HWU dual frequency? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CF3EFC.C82DA8F0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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 Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0006_01CF3EFC.C82DA8F0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Laura, don't know for sure whether it's the same site, I was hoping someone in = the group might have more information. This afternoon, Paul Nicholson's = http://abelian.org/vlf/spectrum.shtml showed similar azimuth, -48 = degrees for 18.3 kHz and -44 for 21.75 kHz.=20 Thanks for the pointer to Peter Schnoor's plots. Both show the sunrise = dip at the same time (6:15), but the midday maximum is only present on = 18.3 kHz. But this may well be due to different groundwave vs skywave = fringe patterns for the two frequencies. A few years ago, DHO-38 was = also temporarily operating on two similarly spaced frequencies, showing = very different propagation patterns: = df6nm.bplaced.net/VLF/2006/vlf_DHO_dualfreq.htm . =20 Best 73, Markus From: LZ=20 Sent: Thursday, March 13, 2014 8:14 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Aw: VLF: HWU dual frequency? Marcus, You wrote:=20 > ... > I wonder if they are using the same antenna for both carriers,=20 > ... Are you sure? Diurnal patterns from Kiel VLF Grappa look quite = different: http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=3D14-03-12&freq=3D21.= 7KHz http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=3D14-03-12&freq=3D18.= 3KHz Laura Sent from my DoubtPhone ------=_NextPart_000_0006_01CF3EFC.C82DA8F0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Laura,
 
don't know for sure whether it's = the same=20 site, I was hoping someone in the group might have more information. = This=20 afternoon, Paul Nicholson's http://abelian.org/vlf/spe= ctrum.shtml showed similar=20 azimuth, -48 degrees for 18.3 kHz and -44 for 21.75 = kHz. 
 
Thanks for the pointer to Peter = Schnoor's plots.=20 Both show the sunrise dip at the same time (6:15), but the midday=20 maximum is only present on 18.3 kHz. But this may well be due = to=20 different groundwave vs skywave fringe patterns for the two=20 frequencies. A few years ago, DHO-38 was also temporarily=20 operating on two similarly spaced frequencies, = showing very=20 different propagation patterns: df6nm.bpl= aced.net/VLF/2006/vlf_DHO_dualfreq.htm .
  
Best 73,
Markus
 

From: LZ
Sent: Thursday, March 13, 2014 8:14 PM
Subject: Aw: VLF: HWU dual frequency?

Marcus,

You = wrote:
>=20 ...
> I wonder if they are using the same antenna for both = carriers,=20
> ...

Are you sure? Diurnal patterns from Kiel VLF Grappa = look=20 quite different:
http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=3D1= 4-03-12&freq=3D21.7KHz
http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=3D1= 4-03-12&freq=3D18.3KHz

Laura

Sent=20 from my DoubtPhone

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