Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5B4EA38000095; Thu, 3 Nov 2011 12:26:14 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RM06a-0001kh-H3 for rs_out_1@blacksheep.org; Thu, 03 Nov 2011 16:25:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RM06a-0001kY-5v for rsgb_lf_group@blacksheep.org; Thu, 03 Nov 2011 16:25:28 +0000 Received: from smtp-vbr1.xs4all.nl ([194.109.24.21]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RM06Y-0002nW-N6 for rsgb_lf_group@blacksheep.org; Thu, 03 Nov 2011 16:25:28 +0000 Received: from pc-roelof (ndb.demon.nl [82.161.81.65]) by smtp-vbr1.xs4all.nl (8.13.8/8.13.8) with ESMTP id pA3GPK6X046863 for ; Thu, 3 Nov 2011 17:25:25 +0100 (CET) (envelope-from roelof@ndb.demon.nl) To: rsgb_lf_group@blacksheep.org References: <006901cc9a3d$2cde23e0$4001a8c0@lark> Date: Thu, 03 Nov 2011 17:25:15 +0100 MIME-Version: 1.0 From: "Roelof Bakker" Message-ID: In-Reply-To: <006901cc9a3d$2cde23e0$4001a8c0@lark> User-Agent: Opera Mail/11.52 (Win32) X-Virus-Scanned: by XS4ALL Virus Scanner X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Content-Type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes Subject: Re: LF: Re: Over the Pole - towards Eu Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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-SCOLL-SCORE: 0:2:481668224:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1dc1474eb2c0a64ca1 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello Alan, Last weekend propagation of Canadian NDB's was almost non existant. The night from Monday to Tuesday, propagation of northern stations was much improved. Much to my surprise, I had good aural copy of NDB PVQ, Put River/Dead Horse which transmits on 376 kHz and is located in Alaska. Tuesday afternoon the K-index as reported by Kiel rose to 7. Now my question: I and others have often observed improved propagation in the NDB band just before a solar event. Does this also happen on 136 kHz and is there a theory that explains this phenomenon? 73, Roelof Bakker, pa0rdt