Return-Path: Received: (qmail 2390 invoked from network); 24 Mar 2003 22:18:16 -0000 Received: from netmail02.services.quay.plus.net (212.159.14.221) by mailstore with SMTP; 24 Mar 2003 22:18:16 -0000 Received: (qmail 14853 invoked by uid 10001); 24 Mar 2003 22:18:16 -0000 Received: from post.thorcom.com (193.82.116.70) by netmail02.services.quay.plus.net with SMTP; 24 Mar 2003 22:18:15 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 18xaDK-000402-NV for rsgb_lf_group-outgoing@blacksheep.org; Mon, 24 Mar 2003 22:14:42 +0000 Received: from [212.135.6.12] (helo=smarthost2.mail.uk.easynet.net) by post.thorcom.com with esmtp (Exim 4.14) id 18xaDF-0003zp-Ss for rsgb_lf_group@blacksheep.org; Mon, 24 Mar 2003 22:14:37 +0000 Received: from tnt-13-125.easynet.co.uk ([212.134.22.125] helo=erica) by smarthost2.mail.uk.easynet.net with smtp (Exim 4.10) id 18xaDE-00074i-00 for rsgb_lf_group@blacksheep.org; Mon, 24 Mar 2003 22:14:37 +0000 Message-ID: <000801c2f253$6292f240$7d1686d4@erica> From: "g3ldo" To: rsgb_lf_group@blacksheep.org References: <5.1.0.14.0.20030320183946.0260e158@gemini.herts.ac.uk> <000601c2f033$e413b3d0$d6e136d2@bob2l2u6k2n1g3> <000a01c2f052$5c342160$2602a8c0@WorkGroup> Date: Mon, 24 Mar 2003 22:05:04 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: LF Frequencies for DX Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=-6.6 required=5.0tests=REFERENCESversion=2.51 X-Spam-Checker-Version: SpamAssassin 2.51 (1.174.2.5-2003-03-20-exp) X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false The frequency 137,773.0 was chosen by KL1X for looking for EU stations earlier this year. This was done after some exchange of .jpg s to find out where the Loran lines and noise bands were. Loran is a problem in Alaska. Siince then 137,773.0 has become a 'DX' frequency. The top of the band is not suitable for many EU stations because of the problems of very high power stations above 138kHz and other parts of the band might be more suitable. What might be a solution is for a 'bank' of Argo pictures (on someone's website) showing the images from various locations - in fact two images from each location showing the best and worst- so that anyone planning a test or a DXpedition could plan their operating frequency for optimum effect to a given area. Many USA stations and KL1X have already done this with images of what they have seen. A simple statement could be enough. for example if the band is clear except for one or two spot frequencies then that might be enough. In my case the top of the band above 137.5kHz fills up with noise from the 'Luxembourg effect' most evenings although it didn't stop me seeing UA9OC when conditions were good. Generally: Split frequency operation is essential for DX operating. The top of the band is OK for Northern EU stations to transmit but not to receive. Any more? Regards, Peter, G3LDO e-mail Web