Return-Path: Received: (qmail 28796 invoked from network); 12 Jan 2000 09:35:33 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by teachers.core.plus.net.uk with SMTP; 12 Jan 2000 09:35:33 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 128K2Z-0002km-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 12 Jan 2000 09:26:07 +0000 Received: from lepidachrosite.lion-access.net ([212.19.217.3]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 128K2X-0002kh-00 for rsgb_lf_group@blacksheep.org; Wed, 12 Jan 2000 09:26:05 +0000 Received: from w8k3f0 (1Cust245.tnt6.rtm1.nl.uu.net [212.153.214.245]) by lepidachrosite.lion-access.net (I-Lab) with SMTP id 77F24CAE6E for ; Wed, 12 Jan 2000 09:25:49 +0000 (GMT) Message-ID: <001101bf5cdf$87f66ec0$f5d699d4@w8k3f0> From: "Dick Rollema" To: "LF-Group" Subject: Fw: LF: Loops Date: Wed, 12 Jan 2000 10:14:45 +0100 Organization: Freeler 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 5.00.2314.1300 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: To All from PA0SE Peter, G3LDO wrote: > Provided you are not too bothered about the deep nulls loop antennas > with side-by-side windings are good for DX if they are over a metre > in diameter. This construction (see the PA0SE design in the RSGB > Communication Handbook and the G3LNP design in Radcom July 1999) > allows the individual wires of the windings to be spaced to reduce > the loop internal capacity and increase the Q. I can confirm that my frame-type loop antenna produces a null of at least 50 dB as I found out on the strong signal from DCF139. 73, Dick, PA0SE