Return-Path: Received: (qmail 5205 invoked from network); 16 Dec 2001 14:53:00 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 16 Dec 2001 14:53:00 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 26941 invoked from network); 16 Dec 2001 14:52:57 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 16 Dec 2001 14:52:57 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16FcZb-0003Ic-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 16 Dec 2001 14:47:27 +0000 Received: from imo-d09.mx.aol.com ([205.188.157.41]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16FcZa-0003IX-00 for rsgb_lf_group@blacksheep.org; Sun, 16 Dec 2001 14:47:26 +0000 Received: from MarkusVester@aol.com by imo-d09.mx.aol.com (mail_out_v31_r1.9.) id l.51.15fc9136 (18559) for ; Sun, 16 Dec 2001 09:46:28 -0500 (EST) From: MarkusVester@aol.com Message-ID: <51.15fc9136.294e0dc4@aol.com> Date: Sun, 16 Dec 2001 09:46:28 EST Subject: LF: Deutschlandfunk splatter is back To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 4.0.i for Windows 95 sub 72 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi group, it seems that the old problem of spurious emissions on 153 kHz from Donebach has returned this morning. At the moment, the annoying wideband-FM swish and hiss is about 21 dBuV/m, 136km from the TX (25 mW EMRP). It is distributed over a few kHz, depending on the modulation content, and identified best in SSB mode. On average, my noise level is raised by 10 ... 15 dB. These emission had suddenly increased on June 10th 2001 and were especially strong on warm summer afternoons. After a couple of phone conversations with an engineer at the TX site, it became clear that the Dynamic-AM modulation controller of one of their two 250kW transmitters showed a temperature-dependent fault. The problem could be solved on August 16th, when the spurii were reduced to an insignificant level. Until today :-(. Again, I would appreciate observations of others in south-west and south Germany. For comparison, I can send a short .wav file directly to anyone interested. Regards de Markus, DF6NM (JN59NK)