Return-Path: Received: (qmail 7696 invoked from network); 14 May 2003 18:34:54 -0000 Received: from netmail02.services.quay.plus.net (212.159.14.221) by mailstore with SMTP; 14 May 2003 18:34:54 -0000 Received: (qmail 1972 invoked by uid 10001); 14 May 2003 18:34:54 -0000 Received: from post.thorcom.com (193.82.116.70) by netmail02.services.quay.plus.net with SMTP; 14 May 2003 18:34:54 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 19G11e-0005EK-Lj for rsgb_lf_group-outgoing@blacksheep.org; Wed, 14 May 2003 19:30:50 +0100 Received: from [194.73.73.81] (helo=tungsten.btinternet.com) by post.thorcom.com with esmtp (Exim 4.14) id 19G11X-0005E9-LH for rsgb_lf_group@blacksheep.org; Wed, 14 May 2003 19:30:46 +0100 Received: from host213-122-173-214.in-addr.btopenworld.com ([213.122.173.214] helo=Main) by tungsten.btinternet.com with smtp (Exim 3.22 #23) id 19G11S-0006jG-00 for rsgb_lf_group@blacksheep.org; Wed, 14 May 2003 19:30:38 +0100 Message-ID: <001701c31a46$cf475fa0$6507a8c0@Main> From: "Alan Melia" To: "LF-Group" Date: Wed, 14 May 2003 19:29:11 +0100 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: Tnx CFH Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.0 required=5.0tests=noneversion=2.53 X-Spam-Checker-Version: SpamAssassin 2.53 (1.174.2.15-2003-03-30-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 Hi John,Joe and Markus thanks for the observations on CFH. Its nice to know that I do not have to go out looking for a break in my aerial :-)) Markus, yes the "filtering" to avoid logging the crashes, requires a little thought. I use a slightly easier algorithm. I take six samples at 10 sec intervals and throw all away but the lowest value. I also have a long time constant on the detector (about 3 secs). I am not sure that that is the best way to do it but is gives a smooth line. I did post my plot to my Propagation Report web page. Cheers de Alan G3NYL alan.melia@btinternet.com