Return-Path: Received: (qmail 8286 invoked from network); 21 Nov 2004 00:34:38 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 21 Nov 2004 00:34:38 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CVfyH-0005E1-Bm for dave@picks.force9.co.uk; Sun, 21 Nov 2004 00:52:54 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CVfyG-0005Dr-W2 for dave@picks.force9.co.uk; Sun, 21 Nov 2004 00:52:53 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1CVfga-0006tg-GP for dave@picks.force9.co.uk; Sun, 21 Nov 2004 00:34:36 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CVfg1-00012O-Ux for rs_out_1@blacksheep.org; Sun, 21 Nov 2004 00:34:01 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CVfg1-00012F-J0 for rsgb_lf_group@blacksheep.org; Sun, 21 Nov 2004 00:34:01 +0000 Received: from imo-m14.mx.aol.com ([64.12.138.204]) by relay.thorcom.net with esmtp (Exim 4.41) id 1CVffx-0005Bq-MI for rsgb_lf_group@blacksheep.org; Sun, 21 Nov 2004 00:34:01 +0000 Received: from MarkusVester@aol.com by imo-m14.mx.aol.com (mail_out_v37_r3.8.) id l.a9.67016a02 (3858) for ; Sat, 20 Nov 2004 19:33:48 -0500 (EST) From: MarkusVester@aol.com Message-ID: Date: Sat, 20 Nov 2004 19:33:48 EST To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 8.0 for Windows sub 6104 X-SPF-Result: relay.thorcom.net: domain of aol.com designates 64.12.138.204 as permitted sender X-Spam-Score: 0.7 (/) X-Spam-Report: autolearn=no,HTML_MESSAGE=0.001,HTML_TAG_BALANCE_HTML=0.411,NO_REAL_NAME=0.285 Subject: LF: CFH on 136.9559 kHz ? Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_MESSAGE, HTML_TAG_BALANCE_HTML,NO_REAL_NAME 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit Dear LF group,

for some time there has been a  blue line on 136955.90 Hz, in the middle of my SpecLab screen (http://members.aol.com/df6nm/Grabber.htm, now updating every 10 min). It is probably the CFH carrier mentioned by G3NYK and monitored by CT1DRP.

This is what I had always wished to have for W-E propagation monitoring - a narrow line that can be received with millihertz resolution, and (hopefully) clean and weak enough not to clutter up the band in America. The line was visible in Nuernberg during most of the daylight hours, and peaked to ~3 µV/m around 21:15 this evening - looks like conditions may to be improving. If somebody could make a measurement of CFH within ground wave range, we could estimate their radiated power and make guesses on ionospheric path attenuation.

Best wishes
Markus, DF6NM