X-GM-THRID: 1238144104483506204 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.78.172.11 with SMTP id u11cs68077hue; Sat, 2 Jun 2007 06:47:00 -0700 (PDT) Received: by 10.82.105.13 with SMTP id d13mr3327043buc.1180792020146; Sat, 02 Jun 2007 06:47:00 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id 31si3058959nfu.2007.06.02.06.46.55; Sat, 02 Jun 2007 06:47:00 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HuTtC-0000Jt-RS for rs_out_1@blacksheep.org; Sat, 02 Jun 2007 14:43:30 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HuTtC-0000Jk-AN for rsgb_lf_group@blacksheep.org; Sat, 02 Jun 2007 14:43:30 +0100 Received: from anchor-post-30.mail.demon.net ([194.217.242.88]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HuTtB-0003WU-MZ for rsgb_lf_group@blacksheep.org; Sat, 02 Jun 2007 14:43:30 +0100 Received: from g3xaq.demon.co.uk ([80.176.129.138]) by anchor-post-30.mail.demon.net with esmtp (Exim 4.42) id 1HuTtB-00082G-0B for rsgb_lf_group@blacksheep.org; Sat, 02 Jun 2007 13:43:29 +0000 Message-ID: <2FDOP7D5OXYGFwUq@g3xaq.demon.co.uk> Date: Sat, 2 Jun 2007 14:42:17 +0100 To: rsgb_lf_group@blacksheep.org From: Alan Ibbetson References: <000f01c7a50d$df59a320$f52f7ad5@w4o8m9> <4661756E.9859.1979A02@dave.davesergeant.com> In-Reply-To: <4661756E.9859.1979A02@dave.davesergeant.com> MIME-Version: 1.0 User-Agent: Turnpike/6.04-S (<75mEZ1o+E9EGma1sHUfXKvpQA2>) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: LF Portable 502Khz 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=none 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 Status: O X-Status: X-Keywords: X-UID: 1446 In message <4661756E.9859.1979A02@dave.davesergeant.com>, Dave Sergeant writes > While Colin was chatting from >his /P G4GDR called CQ several times exactly co-channel (he was 589 >here) and he was clearly unaware that the others were chatting on top >of him (as apparently Colin and Brian were also...). > >I know I am not the biggest signal in the world on 500kHz, but surely >if I copy G4GDR (Swindon) 589 in Bracknell I would have thought they >should have been hearing each other. Hello Dave and LFers, I thought I did hear a station sending during one of Colin's overs, but when both Colin and I repeatedly asked "QRZ?" we got no reply. Colin, Brian and I are quite close together so we might not always hear another station that is putting a good signal into other parts of the country, though we do try listening for other callers. If anyone is having difficulty making me hear them then please drop me an email and we can make a sked. I've tried this a couple of times with Ray/GI3PDN although so far we haven't made a 2-way QSO. I have moved the loading coil on my inverted-L from near the far end to the top of the vertical. I need less coil for resonance now, actually rather less than a simple 6pF/m of horizontal loading wire would predict. The loading coil is about 1m underneath my 40m yagi and I'm suspicious that the yagi and the HF array above it are adding extra capacitive loading. Given that the tower sections are not explicitly bonded together and the safety earth is not directly joined to my RF earth, I'm not convinced I have made things better. My next job is to see if the loss resistance has gone up or down. The SWR has certainly changed so the loss isn't near 50 ohms any more. Enjoy NFD. You've certainly got the weather for it. Cheers, Alan G3XAQ alan@g3xaq.demon.co.uk