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[195.171.43.25]) by mx.google.com with ESMTP id u9si13281410wjw.151.2014.03.10.16.36.45 for ; Mon, 10 Mar 2014 16:36:45 -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 1WN8zf-0002UL-Kp for rs_out_1@blacksheep.org; Mon, 10 Mar 2014 22:48:23 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WN8ze-0002UC-V2 for rsgb_lf_group@blacksheep.org; Mon, 10 Mar 2014 22:48:22 +0000 Received: from omr-m04.mx.aol.com ([64.12.143.78]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1WN8zc-00089n-FC for rsgb_lf_group@blacksheep.org; Mon, 10 Mar 2014 22:48:21 +0000 Received: from mtaout-mbc02.mx.aol.com (mtaout-mbc02.mx.aol.com [172.26.221.142]) by omr-m04.mx.aol.com (Outbound Mail Relay) with ESMTP id 81F6770001D77 for ; Mon, 10 Mar 2014 18:48:17 -0400 (EDT) Received: from White (95-91-237-52-dynip.superkabel.de [95.91.237.52]) by mtaout-mbc02.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 928C938000092 for ; Mon, 10 Mar 2014 18:48:16 -0400 (EDT) Message-ID: <52A776E730944692B20DBEDB27A092A0@White> From: "Markus Vester" To: References: <2FC5CAB271A6437CB35A5B100185CEDA@White> <025101cf3a52$e0925750$a1b705f0$@comcast.net> <7DB9DD5669FC4C648838510DCAC08AFB@White> <531A506E.9040103@abelian.org> <531A5C19.9060209@abelian.org> <02ba01cf3aa3$debaad50$9c3007f0$@comcast.net> <531AF126.2060600@abelian.org> <850A470A5B9F4483BED8B49D4791044A@White>,<531B1D0C.3070208@abelian.org> ,<531B4E01.7000304@abelian.org> <039f01cf3b72$bfa1db80$3ee59280$@comcast.net> <76F90E9771CA44F3981F679241E1A005@White> <03ca01cf3b92$eea24670$cbe6d350$@comcast.net> <531C64DA.5050102@abelian.org> <03e101cf3b98$3a61cef0$af256cd0$@comcast.n et> <531CC48C.9090408@abelian.org> <047901cf3bee$0fc64120$2f52c360$@comcast.net> <049201cf3c39$500d3900$f027ab00$@comcast.net> <531E37AF.9030802@abelian.org> Date: Mon, 10 Mar 2014 23:48:14 +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=1394491697; bh=9TWyJBjku0bVDU2NYnZ5BfcOQg4H1mFbwQ7F00FtrHE=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=JXeuF/FBKF9AiFEd30iWtWqJRxNLoD8e7YrCKbhalOThKDbtpScozelUOjAihH1+m Z1y8X3H+DuLXh2BH5N7z4mYhKcL2qQByphbuFnbw2bAxpF350ezgcAeJUesmlV/oNE H8d+Cv5otyTI7jXr066T+obzI9V17B2NmqZpNxWg= x-aol-sid: 3039ac1add8e531e41306991 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: Paul, thanks for this work! > and carrier would be sqrt(2) times stronger than opera. I think the difference between 100% carrier and 50% keyed Opera is actually 6 dB, because the central spectral peak is a voltage integral. In terms of power, on average 50% power is used. 25% goes to the carrier and other 25% into the modulation sidebands. [...] 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 [64.12.143.78 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: e57013951ca4c86ddcf48e741efd2b78 Subject: Re: LF: Daytime 29.499 kHz Content-Type: multipart/alternative; boundary="----=_NextPart_000_0153_01CF3CBB.343F5370" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=2.0 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MAILTO_TO_SPAM_ADDR,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_0153_01CF3CBB.343F5370 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Paul, thanks for this work! > and carrier would be sqrt(2) times stronger than opera. I think the difference between 100% carrier and 50% keyed Opera is = actually 6 dB, because the central spectral peak is a voltage integral. = In terms of power, on average 50% power is used. 25% goes to the carrier = and other 25% into the modulation sidebands.=20 73, Markus From: Paul Nicholson=20 Sent: Monday, March 10, 2014 11:07 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Daytime 29.499 kHz A better signal last night from WH2XBA/1 and I was able to go back to using 10 minute averages to improve time resolution http://abelian.org/vlf/tmp/29499_140310a.gif 120 deg phase change as usual but taking till 04:00 to complete. S/N here was good between 04:00 and 08:00 thanks to background subsiding. Now four days comparison with NAA http://abelian.org/vlf/tmp/29499_140310b.gif The first 3 nights were opera but last night was carrier until 04:00 and carrier would be sqrt(2) times stronger than opera. Yes it is possible for winter day maximum to exceed that of summer on certain paths. There is no simple rule to say which path. For example DHO at 23.4kHz to Todmorden (646 km) http://abelian.org/vlf/tmp/dho_2013a.png http://abelian.org/vlf/tmp/dho_2012a.png Propagation is complicated at short range because there are many modes (or combinations of rays with different number of hops if you visualise things that way) contributing to the total signal. When calculating signals by ray tracing it is usually necessary to include paths with up to 12 or 15 hops at least, in order to get a model that resembles a real diurnal. -- Paul Nicholson -- ------=_NextPart_000_0153_01CF3CBB.343F5370 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Paul, thanks for this = work!
 
> and=20 carrier would be sqrt(2) times stronger than = opera.
I think the difference between 100% = carrier and=20 50% keyed Opera is actually 6 dB, because the central spectral peak = is a voltage integral. In terms of power, on average 50% power is = used. 25%=20 goes to the carrier and other 25% into the modulation=20 sidebands. 
 
73, Markus

Sent: Monday, March 10, 2014 11:07 PM
Subject: Re: LF: Daytime 29.499 kHz

A=20 better signal last night from WH2XBA/1 and I was able to go
back to = using 10=20 minute averages to improve time resolution

  http://abelian.org/= vlf/tmp/29499_140310a.gif

120=20 deg phase change as usual but taking till 04:00 to complete.
S/N here = was=20 good between 04:00 and 08:00 thanks to = background
subsiding.

Now four=20 days comparison with NAA

  http://abelian.org/= vlf/tmp/29499_140310b.gif

The=20 first 3 nights were opera but last night was carrier until
04:00 and = carrier=20 would be sqrt(2) times stronger than opera.

Yes it is possible = for winter=20 day maximum to exceed that
of summer on certain paths.  There is = no=20 simple rule to say
which path.

For example DHO at 23.4kHz to = Todmorden=20 (646 km)

  http://abelian.org/vlf/= tmp/dho_2013a.png
 =20 http://abelian.org/vlf/= tmp/dho_2012a.png

Propagation=20 is complicated at short range because there are
many modes (or = combinations=20 of rays with different number
of hops if you visualise things that = way)=20 contributing to the
total signal.  When calculating signals by = ray=20 tracing it is
usually necessary to include paths with up to 12 or 15=20 hops
at least, in order to get a model that resembles a real=20 diurnal.

--
Paul Nicholson
--

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