X-GM-THRID: 1207985134118005507 X-Gmail-Labels: rsgb lf X-Gmail-Received: da756c3b0d9f34a3e8026466edf794c94a5ac516 Delivered-To: daveyxm@gmail.com Received: by 10.64.249.17 with SMTP id w17cs120237qbh; Wed, 5 Jul 2006 01:48:28 -0700 (PDT) Received: by 10.65.200.19 with SMTP id c19mr4961464qbq; Wed, 05 Jul 2006 01:48:28 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id f18si3126840qba.2006.07.05.01.48.24; Wed, 05 Jul 2006 01:48:28 -0700 (PDT) Received-SPF: neutral (gmail.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 1Fy2z0-0000pN-A3 for rs_out_1@blacksheep.org; Wed, 05 Jul 2006 09:43:42 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Fy2yy-0000pE-3D for rsgb_lf_group@blacksheep.org; Wed, 05 Jul 2006 09:43:40 +0100 Received: from smtp812.mail.ukl.yahoo.com ([217.12.12.202]) by relay2.thorcom.net with smtp (Exim 4.51) id 1Fy2ys-0005Gd-K4 for rsgb_lf_group@blacksheep.org; Wed, 05 Jul 2006 09:43:38 +0100 Received: (qmail 40727 invoked from network); 5 Jul 2006 08:43:28 -0000 Received: from unknown (HELO lark) (alan.melia@btinternet.com@81.131.95.250 with login) by smtp812.mail.ukl.yahoo.com with SMTP; 5 Jul 2006 08:43:28 -0000 Message-ID: <002401c6a00f$16a05e00$0300a8c0@lark> From: "Alan Melia" To: References: <001101c69f68$fa306a90$6501a8c0@eagles> <001801c69f70$bef1a9a0$0300a8c0@lark> <000901c69f77$db074850$6501a8c0@eagles> <002b01c69f7e$701bbec0$6401a8c0@JAYTERMINAL> <004701c69ff7$2298b710$6501a8c0@eagles> <002301c6a009$7fa86510$0300a8c0@LAPTOP> Date: Wed, 5 Jul 2006 09:36:24 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 X-Spam-Score: -1.0 (-) X-Spam-Report: autolearn=disabled,AWL=-0.964 Subject: LF: Re: Re: Antenna Tuning Content-Type: text/plain; charset="iso-8859-1" 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=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: 5058 Well done Brian and Peter, that probably explains the problem. JA Has been working from ideas in the RSGB books which probably are set around rather more modest heights and areas available. His tower and top-load spread is quite impressive and should punch out a good signal when he cracks the tuning.....he should now have a good sight of where to go....... 3 to 6 mH is what you might require for tuning a 30 foot high 130 foot inverted L to 136kHz This is the internet and refector at its very best helping isolated enthusiasts, from the wealth of experience and knowledge available. Cheers de Alan G3NYK ----- Original Message ----- From: Peter Martinez To: Sent: 05 July 2006 09:03 Subject: LF: Re: Antenna Tuning > From G3PLX: > > JA: > > Using the figures you gave in your posting, and the IN3OTD variometer > calculator quoted by Brian, I estimate that your variometer has inductance > between 3.0 and 6.8mH. > ------------snip