Return-Path: Received: from mtain-ma02.r1000.mx.aol.com (mtain-ma02.r1000.mx.aol.com [172.29.96.10]) by air-dd04.mail.aol.com (v129.4) with ESMTP id MAILINDD041-860a4d9855e5ae; Sun, 03 Apr 2011 07:11:33 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma02.r1000.mx.aol.com (Internet Inbound) with ESMTP id AF18C38000155; Sun, 3 Apr 2011 07:11:29 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Q6LCk-0007bH-3q for rs_out_1@blacksheep.org; Sun, 03 Apr 2011 12:10:50 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Q6LCj-0007b8-N9 for rsgb_lf_group@blacksheep.org; Sun, 03 Apr 2011 12:10:49 +0100 Received: from imr-db01.mx.aol.com ([205.188.91.95]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Q6LCg-0003sh-Vk for rsgb_lf_group@blacksheep.org; Sun, 03 Apr 2011 12:10:49 +0100 Received: from mtaout-da06.r1000.mx.aol.com (mtaout-da06.r1000.mx.aol.com [172.29.51.134]) by imr-db01.mx.aol.com (8.14.1/8.14.1) with ESMTP id p33BAi01024708 for ; Sun, 3 Apr 2011 07:10:44 -0400 Received: from White (nrbg-4d073961.pool.mediaWays.net [77.7.57.97]) by mtaout-da06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 427CEE00008F for ; Sun, 3 Apr 2011 07:10:44 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: Date: Sun, 3 Apr 2011 13:10:57 +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-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Propagation Anomaly Content-Type: multipart/alternative; boundary="----=_NextPart_000_00BC_01CBF200.92584010" 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 x-aol-global-disposition: G x-aol-sid: 3039ac1d600a4d9855e177f8 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_00BC_01CBF200.92584010 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear LF, yesterday around 12 UT, there was an unusual skywave outage on the pat= h from Northern European Loran-C stations Jan Mayen and Bo, lasting ab= out 45 minutes. It is visible as an interruption of the four purple st= rips on=20 http://df6nm.bplaced.net/LoranView/LoranView_110402_0800-1600.jpg This is reminiscent but quite different from the usual SID effects, wh= ich are normally induced by solar x-ray flares and would have affected= the whole sunlit hemisphere at once. In this case, more southerly and= easterly paths were unchanged. Also no pronounced dip or enhancement= appeared on any of the VLF MSK signals. The NOAA space-weather site http://www.swpc.noaa.gov/today.html has no indication of a significant x-ray burst at the time, albeit a= generally high level of magnetic activity. Any ideas? Best 73, Markus (DF6NM) =20 ------=_NextPart_000_00BC_01CBF200.92584010 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear LF,
 
yesterday around 12 UT, there was an= unusual=20 skywave outage on the path from Northern European Loran-C station= s Jan=20 Mayen and Bo, lasting about 45 minutes. It is visible as an interruption=20 of the four purple strips on
 
This is reminiscent but quite differe= nt from the=20 usual SID effects, which are normally induced by solar x-ray= flares=20 and would have affected the whole sunlit hemisphere at once.=  In=20 this case, more southerly and easterly paths were unchanged.=20 Also no pronounced dip or enhancement appeared on any= of the VLF=20 MSK signals. The NOAA space-weather= =20 site
has no indication of a significant x-= ray burst at=20 the time, albeit a generally high level of magnetic activity.
 
Any ideas?
 
Best 73,
Markus (DF6NM)
 
 
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