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[195.171.43.25]) by mx.google.com with ESMTP id z20si13688723wiu.36.2013.12.27.14.54.53 for ; Fri, 27 Dec 2013 14:54:54 -0800 (PST) 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 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Vwg77-0000gp-2G for rs_out_1@blacksheep.org; Fri, 27 Dec 2013 22:42:41 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vwg76-0000gg-Ha for rsgb_lf_group@blacksheep.org; Fri, 27 Dec 2013 22:42:40 +0000 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Vwg74-0004No-4K for rsgb_lf_group@blacksheep.org; Fri, 27 Dec 2013 22:42:39 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id rBRMgb5B015831 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 27 Dec 2013 23:42:37 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id rBRMgbBl018946 for ; Fri, 27 Dec 2013 23:42:37 +0100 Message-ID: <52BE0251.6010107@iup.uni-heidelberg.de> Date: Fri, 27 Dec 2013 23:42:25 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <039101cf0331$b32ebfe0$198c3fa0$@comcast.net> <52BDF628.7050001@iup.uni-heidelberg.de> <041c01cf0352$2380d100$6a827300$@comcast.net> In-Reply-To: <041c01cf0352$2380d100$6a827300$@comcast.net> X-Spam-Score: -2.9 (--) 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: Jim, Do you intend or can you imagine to set up a VLF grabber in Arizona? It could be a good motivating factor for experimental VLF stations in the US and we all can see how the situation looks on your side. The VLF hype has slowed down since 2010/2011 but i see a consistent comeback and i see that my own motivation becomes a bit more solid :-) You can see the wideband windows on the grabbers of OK2BVG or DK7FC and the other grabbers. There are several military stations visible all the time, like DHO38 on 23.4 kHz from north Germany. If you need any help in setting up a grabber, we can do it, no problem. A question of a few hours! It wouldn't be the first one for me :-) Arizona. that sounds like you have plenty of space for experiments? [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.6 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: b99b9f5ebb2905dfac0746d3f825052c Subject: Re: VLF: QRM? Content-Type: multipart/alternative; boundary="------------020806040408090305070406" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TITLE_EMPTY 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 Status: O X-Status: X-Keywords: X-UID: 3515 This is a multi-part message in MIME format. --------------020806040408090305070406 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id rBRMgb5B015831 Jim, Do you intend or can you imagine to set up a VLF grabber in Arizona? It=20 could be a good motivating factor for experimental VLF stations in the=20 US and we all can see how the situation looks on your side. The VLF hype has slowed down since 2010/2011 but i see a consistent=20 comeback and i see that my own motivation becomes a bit more solid :-) You can see the wideband windows on the grabbers of OK2BVG or DK7FC and=20 the other grabbers. There are several military stations visible all the=20 time, like DHO38 on 23.4 kHz from north Germany. If you need any help in setting up a grabber, we can do it, no problem.=20 A question of a few hours! It wouldn't be the first one for me :-) Arizona. that sounds like you have plenty of space for experiments? 73, Stefan/DK7FC Am 27.12.2013 23:22, schrieb hvanesce: > > Thank You Stefan, > > I've opened a window centered on 11904.76190; this will be very=20 > helpful, much appreciated. > > Thank you also for the confirmation of QRM. > > 73, Jim AA5BW > > *From:* owner-rsgb_lf_group@blacksheep.org=20 > [mailto:owner-rsgb_lf_group@blacksheep.org] *On Behalf Of *Stefan Sch=E4= fer > *Sent:* Friday, December 27, 2013 2:51 PM > *To:* rsgb_lf_group@blacksheep.org > *Subject:* Re: VLF: QRM? > > Hi Jim, > > Am 27.12.2013 19:30, schrieb hvanesce: > > [...] but I do not know the offset of my sound card clock; my sound=20 > card clock and my low-accuracy reference clock differ by 0.3Hz (+/-=20 > 1mHz over short and long time intervals), so until install an accurate=20 > clock I can only guess that my clock offset could be +/-1Hz or so.=20 > Accordingly the center frequency of the signal shown here could be +/-=20 > 1Hz or so from the indicated 8972.81 > > This question can be answered by tracking the signal on 11904.76190 Hz=20 > which came back, today 14:30 UTC. > > Is it most likely that the signal in the attached is QRM? > > R, CFM. > > 73, Stefan/DK7FC > --------------020806040408090305070406 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Jim,

Do you intend or can you imagine to set up a VLF grabber in Arizona? It could be a good motivating factor for experimental VLF stations in the US and we all can see how the situation looks on your side.
The VLF hype has slowed down since 2010/2011 but i see a consistent comeback and i see that my own motivation becomes a bit more solid :-)
You can see the wideband windows on the grabbers of OK2BVG or DK7FC and the other grabbers. There are several military stations visible all the time, like DHO38 on 23.4 kHz from north Germany.
If you need any help in setting up a grabber, we can do it, no problem. A question of a few hours! It wouldn't be the first one for me :-)
Arizona. that sounds like you have plenty of space for experiments?

73, Stefan/DK7FC

Am 27.12.2013 23:22, schrieb hvanesce:

Thank You Stefan,

 

I’ve opened a window centered on 11904.76190; this will be very helpful, much appreciated.

 

Thank you also for the confirmation of QRM.

 

73,  Jim AA5BW

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Stefan Schäfer
Sent: Friday, December 27, 2013 2:51 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: VLF: QRM?

 

Hi Jim,

Am 27.12.2013 19:30, schrieb hvanesce:

 

[...] but I do not know the offset of my sound card clock; my sound card clock and my low-accuracy reference clock differ by 0.3Hz (+/- 1mHz over short and long time intervals), so until install an accurate clock I can only guess that my clock offset could be +/-1Hz or so. Accordingly the center frequency of the signal shown here could be +/- 1Hz or so from the indicated 8972.81

This question can be answered by tracking the signal on 11904.76190 Hz which came back, today 14:30 UTC.

Is it most likely that the signal in the attached is QRM?

R, CFM.

73, Stefan/DK7FC

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