Return-Path: Received: (qmail 4985 invoked from network); 16 Apr 2001 20:36:06 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by 10.226.25.101 with SMTP; 16 Apr 2001 20:36:06 -0000 Received: (qmail 23350 invoked from network); 16 Apr 2001 20:35:57 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 16 Apr 2001 20:35:57 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14pFdB-0005ET-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 16 Apr 2001 21:29:53 +0100 Received: from imo-r20.mx.aol.com ([152.163.225.162]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14pFd9-0005Ac-00 for rsgb_lf_group@blacksheep.org; Mon, 16 Apr 2001 21:29:52 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from MarkusVester@aol.com by imo-r20.mx.aol.com (mail_out_v29.14.) id l.b9.d3282cb (3995) for ; Mon, 16 Apr 2001 16:28:50 -0400 (EDT) From: MarkusVester@aol.com Message-ID: Date: Mon, 16 Apr 2001 16:28:50 EDT Subject: LF: 137689.6 Hz 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 70 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi John and all, unlike Loran, those DCF42/49 intermodulation frequencies do not spread all over the band. I have observed discrete lines only in the region 135.48 to 135.61 kHz, which corresponds to n = 0...5 in the formula (136547.5 +- n * 11.42) Hz, plus a fair bit of broadband noise below 136.7 kHz. Also, here at 160km they are constant to within a dB or so, whereas 137689.6 fades from typically -8 dBuV/m right down to invisibility. Wonder what corner of the globe it actually comes from... 73 de Markus, DF6NM > The line reported at 137689.6 would fit: > 2*f(DCF49) - (fp-fd) +- n(fd/104), with n = 204 to within 0.3Hz, > according to the formula you supplied to me at the end of last year. > It is not a Loran line. > 73 John, G4CNN