Return-Path: Received: from rly-db09.mx.aol.com (rly-db09.mail.aol.com [172.19.130.84]) by air-db03.mail.aol.com (v125.7) with ESMTP id MAILINDB034-ae84ae964691fc; Thu, 29 Oct 2009 05:46:24 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db09.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDB096-ae84ae964691fc; Thu, 29 Oct 2009 05:46:19 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N3RZ4-0002zR-5e for rs_out_1@blacksheep.org; Thu, 29 Oct 2009 09:45:06 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N3RZ3-0002zI-Q4 for rsgb_lf_group@blacksheep.org; Thu, 29 Oct 2009 09:45:05 +0000 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N3RXL-0001CT-3d for rsgb_lf_group@blacksheep.org; Thu, 29 Oct 2009 09:43:19 +0000 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id CDF5C51C00E for ; Thu, 29 Oct 2009 10:44:36 +0100 (CET) Received: from PC_van_Rik.fys.kuleuven.be (dhcp-10-33-85-106.fys.kuleuven.be [10.33.85.106]) by smtps01.kuleuven.be (Postfix) with ESMTP id 8EFF831E702 for ; Thu, 29 Oct 2009 10:44:36 +0100 (CET) X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Thu, 29 Oct 2009 10:44:39 +0100 To: "rsgb_lf_group@blacksheep.org" X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe In-Reply-To: References: Mime-Version: 1.0 Message-Id: <20091029094436.8EFF831E702@smtps01.kuleuven.be> X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: 500kHz propagation Content-Type: text/plain; charset="us-ascii"; format=flowed 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=TO_ADDRESS_EQ_REAL 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-IP: 193.82.116.20 Over the past days I monitored the G4JNT WSPR beacon 24/24. During daytime I have a weak but consistent copy of Andy's signal, average -24dB with ups and down of some dB. During nighttime the signal is -10dB on average, with the usual deep QSB (peaking -1dB, dips down to -20dB). But the most interesting observation is that in the afternoon the first peaks (from -24dB up to -8dB) occur as early as 15:45 UTC. This is almost 1 hour before sunset (16:37 UTC) and almost 1.5 hours before the D-layer (at mid point) goes into darkness. 73, Rik ON7YD - OR7T