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[195.171.43.25]) by mx.google.com with ESMTP id xa6si16486167wjc.152.2014.06.29.07.26.57 for ; Sun, 29 Jun 2014 07:26:58 -0700 (PDT) Received-SPF: none (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@mx.aol.com; dmarc=pass (p=REJECT dis=NONE) header.from=aol.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1X1Etb-0002XC-DC for rs_out_1@blacksheep.org; Sun, 29 Jun 2014 14:11:51 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1X1Etb-0002X3-0H for rsgb_lf_group@blacksheep.org; Sun, 29 Jun 2014 14:11:51 +0100 Received: from omr-m09.mx.aol.com ([64.12.143.82]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1X1EtY-00061g-DD for rsgb_lf_group@blacksheep.org; Sun, 29 Jun 2014 14:11:49 +0100 Received: from mtaout-mce02.mx.aol.com (mtaout-mce02.mx.aol.com [172.29.27.206]) by omr-m09.mx.aol.com (Outbound Mail Relay) with ESMTP id 2F70F7000008B; Sun, 29 Jun 2014 09:11:46 -0400 (EDT) Received: from White (95-91-237-52-dynip.superkabel.de [95.91.237.52]) by mtaout-mce02.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 136E13800009A; Sun, 29 Jun 2014 09:11:42 -0400 (EDT) Message-ID: <70C20C1F4F574275BD09C69EDAD269E5@White> From: "Markus Vester" To: Cc: Date: Sun, 29 Jun 2014 15:11:38 +0200 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=1404047506; bh=qq8lXfUOUDWr6bO/9h8unWdEXyMYYuM94jEGrwI2/Zk=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=aNPKILwGF+GkH+AD+OKvDZhqPP5lvc+kUQ9q72/xX+yep52EBvTAvuTTgNoplnD+i obxB1YDXqNTIwvDydYdry+2WYrWAR/QEE0zaQMqC5OddQWVCHn0RadScQn5jh0G0RH WcMPu6We9Y9G0bKcARm15WhaRZV4jc0Ji8YPdiOw= x-aol-sid: 3039ac1d1bce53b0108e271f X-AOL-IP: 95.91.237.52 X-Spam-Score: 0.0 (/) 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: Both transmissions from SAQ were copied nicely here in Nuernberg, JN59NJ. Unlike in earlier years, where I had used my LF marconi antenna for receiving SAQ, this time it was being picked up by an orthogonal pair of magnetic loops in the garden. This also feeds my VLF colour-direction finder, showing blue SAQ traces: http://www.df6nm.de/vlf/vlfgrabber.htm . [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [64.12.143.82 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 X-Scan-Signature: ad8e5dd63f7497fd9d71d15044db2e2b Subject: VLF: SAQ in Nuernberg 14-06-29 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01CF93AC.6CEF8C10" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,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_000B_01CF93AC.6CEF8C10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Both transmissions from SAQ were copied nicely here in Nuernberg, = JN59NJ.=20 Unlike in earlier years, where I had used my LF marconi antenna for = receiving SAQ, this time it was being picked up by an orthogonal pair of = magnetic loops in the garden. This also feeds my VLF colour-direction = finder, showing blue SAQ traces: http://www.df6nm.de/vlf/vlfgrabber.htm = . As expected, the signal from the loop pointing 330 deg azimuth (left = channel) was about 6 dB stronger than that on the right channel, = pointing 60 deg. SNR was approximately 40 dB in 1 Hz, with the key-up = backwave about 20 dB weaker. Interestingly, during transmitter frequency = variations the signal seemed to be slightly weaker above 17.2 kHz, so = the transmit antenna resonance might have been tuned slightly below = nominal. IQ data files at 187.5 samples/s are available at = http://df6nm.bplaced.net/VLF/SAQ/saq_iqdata_140629.zip . If you like you = can listen to the recordings using the SndOutpt utility from the DL4YHF = website, in conjunction with simple batch commands included in the zip = file. Note that the digital 10x gain used for recording the first file = turned out to be a bit low, so I used 100x for the second one.=20 Best 73, Markus (DF6NM) ------=_NextPart_000_000B_01CF93AC.6CEF8C10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Both transmissions from SAQ were=20 copied nicely here in Nuernberg, JN59NJ. 
 
Unlike in earlier = years, where I=20 had used my LF marconi antenna for receiving SAQ, this=20 time it was being picked up by an orthogonal pair of magnetic=20 loops in the garden. This also feeds my VLF colour-direction = finder,=20 showing blue SAQ traces: http://www.df6nm.de/vlf/v= lfgrabber.htm .
 
As expected, the signal from the loop = pointing 330=20 deg azimuth (left channel) was about 6 dB stronger than that on the = right=20 channel, pointing 60 deg. SNR was  approximately 40 dB in = 1=20 Hz, with the key-up backwave about 20 dB weaker. = Interestingly, during=20 transmitter frequency variations the signal seemed to be slightly=20 weaker above 17.2 kHz, so the transmit antenna resonance might have = been=20 tuned slightly below nominal.
 
IQ data files at 187.5 samples/s are = available at=20 http://df= 6nm.bplaced.net/VLF/SAQ/saq_iqdata_140629.zip .=20 If you like you can listen to the=20 recordings using the SndOutpt utility from the DL4YHF website, in=20 conjunction with simple batch commands included in the zip = file. Note that=20 the digital 10x gain used for recording the first file turned out to = be a=20 bit low, so I used 100x for the second one. 
 
Best 73,
Markus (DF6NM)
 
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