Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc03.r1000.mx.aol.com (Internet Inbound) with ESMTP id ED36638000083; Mon, 30 Apr 2012 06:31:06 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SOnrX-0000wf-EJ for rs_out_1@blacksheep.org; Mon, 30 Apr 2012 11:29:47 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SOnrX-0000wW-0u for rsgb_lf_group@blacksheep.org; Mon, 30 Apr 2012 11:29:47 +0100 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 1SOnrU-0003eZ-PX for rsgb_lf_group@blacksheep.org; Mon, 30 Apr 2012 11:29:45 +0100 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 q3UATg8s019819 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 30 Apr 2012 12:29:43 +0200 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 q3UATgfu002358 for ; Mon, 30 Apr 2012 12:29:42 +0200 Message-ID: <4F9E695F.4010901@iup.uni-heidelberg.de> Date: Mon, 30 Apr 2012 12:28:47 +0200 From: =?ISO-8859-15?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 X-Spam-Score: -2.3 (--) 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 group, Since yesterday in the afternoon, i'm running a CW beacon again at 137.0 kHz. Speed is about 25 BPM i guess. It was intended to generate a test signal for my antenna tests here in the holiday camp in JO41. After seeing two interesting spots in the DX cluster ( http://www.dxsummit.fi/CustomFilter.aspx?customCount=50&customRange=137 ) i decided to run it some days longer, knowing that many LF listeners can cross the way (=spectrum) and note that there is something going on in the LF amateur band. [...] Content analysis details: (-2.3 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] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 5c335215f1b3de26d890ee84d49616ce Subject: LF: 137 kHz SWL report from a tube Audion Content-Type: text/plain; charset=ISO-8859-15; format=flowed 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: 0:2:455132928:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d604b4f9e69ea35e7 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello group, Since yesterday in the afternoon, i'm running a CW beacon again at 137.0 kHz. Speed is about 25 BPM i guess. It was intended to generate a test signal for my antenna tests here in the holiday camp in JO41. After seeing two interesting spots in the DX cluster ( http://www.dxsummit.fi/CustomFilter.aspx?customCount=50&customRange=137 ) i decided to run it some days longer, knowing that many LF listeners can cross the way (=spectrum) and note that there is something going on in the LF amateur band. This time i got a mail from Horst/DL2SAV near Stuttgart (JN48 i think). He gave me a very interesting report. He is using no amateur radio to receive LF but an old tube radio from the 60's (Schaub-Lorenz) and a homemade tube Audion. He tells that DCF39 seems to work as the BFO, so he can hear me in normal AM mode, like a NDB. Today he sent me 3 recordings which sound very fascinating for me. If you want to listen, here the link: http://dl.dropbox.com/u/19882028/LF/DK7FC_137kHz_30Apr12_amTag_mit_Audion.mp3 http://dl.dropbox.com/u/19882028/LF/Dk7FC_137kHz_30Apr_12_mit_Radio_Schaub_Lorenz.mp3 http://dl.dropbox.com/u/19882028/LF/DK7FC_137kHz_30_Apr_112_mit_Audiion.mp3 What i don't understand: If DCF39 is the BFO and i am transmitting at 137.0, then the CW sidetone should be 1830 Hz (LSB, 138.83-137.0)? But the tone from the Audion sounds rather like 800 Hz for me. Maybe someone has an explanation. BTW the beacon is stilll on the air... 73, Stefan/DK7FC