Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1A3E838000082; Sun, 17 Jun 2012 10:55:14 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SgGrh-0006P6-7D for rs_out_1@blacksheep.org; Sun, 17 Jun 2012 15:54:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SgGrg-0006Ox-II for rsgb_lf_group@blacksheep.org; Sun, 17 Jun 2012 15:54:08 +0100 Received: from smtp-vbr1.xs4all.nl ([194.109.24.21]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SgGre-0007DO-OX for rsgb_lf_group@blacksheep.org; Sun, 17 Jun 2012 15:54:07 +0100 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 q5HErxOC070358 for ; Sun, 17 Jun 2012 16:54:05 +0200 (CEST) (envelope-from roelof@ndb.demon.nl) To: rsgb_lf_group@blacksheep.org References: <4FDDE3C9.8080505@iup.uni-heidelberg.de> Date: Sun, 17 Jun 2012 16:53:58 +0200 MIME-Version: 1.0 From: "Roelof Bakker" Message-ID: In-Reply-To: <4FDDE3C9.8080505@iup.uni-heidelberg.de> User-Agent: Opera Mail/12.00 (Win32) X-Virus-Scanned: by XS4ALL Virus Scanner 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: Hello Stefan, This morning I listened to your QSO with PA3ABK at 21:10 UTC yesterday. Jan was S-8 on a real S-meter and your signal was peaking S-4; about 15 dB above the band noise. Easy copy in a band width of 500 Hz. [...] 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 [194.109.24.21 listed in list.dnswl.org] X-Scan-Signature: e09cca6d8e44a91eadbdfb3e1b8aec09 Content-Type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes Subject: Re: LF: Further MF impressions 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: 0:2:412291072:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404b4fddefd16b99 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello Stefan, This morning I listened to your QSO with PA3ABK at 21:10 UTC yesterday. Jan was S-8 on a real S-meter and your signal was peaking S-4; about 15 dB above the band noise. Easy copy in a band width of 500 Hz. About propagation over a sea path, a few NDB chasers have studied this and have come to the conclusion that propagation over sea reaches four times as far as over land, using the same power and antenna. I live on an peninsula and at daytime could copy an NDB from the Faroer Islands at daytime all year round on 381 kHz. The distance is about 1300 km. For long distance propagation, the bands opens up an hour or more after sunset, when the D-layer has collapsed. But in due course you will find out the propagation finesses yourself. However, there are always surprises against all odds. (Last night I logged 20 Canadian NDB's on LF, go figure) Good luck with your stimulating experiments! 73, Roelof Bakker, pa0rdt