Return-Path: Received: from rly-mb08.mx.aol.com (rly-mb08.mail.aol.com [172.21.131.166]) by air-mb04.mail.aol.com (v126.13) with ESMTP id MAILINMB042-d1e4b18052436a; Thu, 03 Dec 2009 13:36:25 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mb08.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMB082-d1e4b18052436a; Thu, 03 Dec 2009 13:36:22 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NGGWO-0003NE-5n for rs_out_1@blacksheep.org; Thu, 03 Dec 2009 18:35:20 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NGGWN-0003N5-Ph for rsgb_lf_group@blacksheep.org; Thu, 03 Dec 2009 18:35:19 +0000 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NGGWM-0007QX-Sq for rsgb_lf_group@blacksheep.org; Thu, 03 Dec 2009 18:35:19 +0000 Received: from smtps02.kuleuven.be (smtpshost02.kulnet.kuleuven.be [134.58.240.75]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id CA91051C00D for ; Thu, 3 Dec 2009 19:35:04 +0100 (CET) Received: from webmail6.cc.kuleuven.be (webmail6.cc.kuleuven.be [134.58.242.53]) by smtps02.kuleuven.be (Postfix) with ESMTP id 92142F3862 for ; Thu, 3 Dec 2009 19:35:04 +0100 (CET) Received: by webmail6.cc.kuleuven.be (Postfix, from userid 48) id 8B9B518056; Thu, 3 Dec 2009 19:35:04 +0100 (CET) Received: from 204.148-182-91.adsl-dyn.isp.belgacom.be (204.148-182-91.adsl-dyn.isp.belgacom.be [91.182.148.204]) by webmail6.kuleuven.be (Horde MIME library) with HTTP; Thu, 03 Dec 2009 19:35:04 +0100 Message-ID: <20091203193504.9bpwck4n4gso0k04@webmail6.kuleuven.be> Date: Thu, 03 Dec 2009 19:35:04 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" References: <9afca2640912031004h41c8eb67t8427d65670a634f2@mail.gmail.com> In-Reply-To: <9afca2640912031004h41c8eb67t8427d65670a634f2@mail.gmail.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Internet Messaging Program (IMP) H3 (4.1.2) X-Originating-IP: 91.182.148.204 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: Re: LF: Skywave on 500kHz Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; format="flowed" Content-Transfer-Encoding: 7bit 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 X-Mailer: Unknown (No Version) Roger, I have copied CW signals from the UK in the 1mW range. So 500+ km sould be possible in CW. 73, Rik ON7YD - OR7T Quoting Roger Lapthorn : > In the evenings I'm surprised just how good my reports are from > F6CNI some 418kms away near Paris. Last night my 1mW ERP was being > received at 0dB S/N on WSPR and already he's given me -3dB again > tonight. > > If signals are this strong by sky wave, how much further could I > reasonably expect to get? SM6BHZ and GM4SLV have heard me > (850-950kms), but can I (reasonably) expect much further? What is > the typical attenuation on each ground reflection for multiple hops > over water and over land? > > BTW, still not on 136kHz yet. > > 73s > Roger G3XBM > > -- > ------------------------------------------------------------- > http://g3xbm-qrp.blogspot.com/ > http://www.g3xbm.co.uk > G3XBM GQRP 1678 ISWL G11088 >