Return-Path: Received: (qmail 12663 invoked from network); 18 Mar 2000 10:49:54 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by dimple.core.plus.net.uk with SMTP; 18 Mar 2000 10:49:54 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12WGgq-0004a3-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 18 Mar 2000 10:42:40 +0000 Received: from mb09.swip.net ([193.12.122.212]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12WGgp-0004Zy-00 for rsgb_lf_group@blacksheep.org; Sat, 18 Mar 2000 10:42:39 +0000 Received: from win95 (d212-151-86-133.swipnet.se [212.151.86.133]) by mb09.swip.net (8.8.8/8.8.8) with SMTP id LAA18498 for ; Sat, 18 Mar 2000 11:42:12 +0100 (MET) Message-ID: <000d01bf90c7$0ecbeb80$855697d4@win95.swipnet.se> From: "C Andersson" To: "RSGB LF group" Subject: LF: New FS measurements Date: Sat, 18 Mar 2000 11:25:21 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: With the risk of being tedious I just want to inform that I made some more FS measurements Saturday morning. I have replaced the untuned loop with a tuned ferrite antenna + FET preamp. The new meter is checked with a par of Helmholtz coils with radius 0,44 m. The reason for rebuilding the instrument is A) To make it more portable B) To get more references C) It fits in a normal sized pair of Helmholtz coils. The new meter shows 10 dB increased sensitivity compared to the untuned loop. Quite useful in measurements at larger distance. This new setup indicates larger values than the previous. The difference between calculated and measured values is now approx 1,5 dB. More details here: http://home5.swipnet.se/~w-54761/fs.htm /sm6pxj Christer