Return-Path: Received: (qmail 20482 invoked from network); 19 Feb 2001 10:45:14 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by extortion.plus.net with SMTP; 19 Feb 2001 10:45:14 -0000 Received: (qmail 25507 invoked from network); 19 Feb 2001 10:45:14 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 19 Feb 2001 10:45:14 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14Unj7-0005W9-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 19 Feb 2001 10:39:29 +0000 Received: from cmailg1.svr.pol.co.uk ([195.92.195.171]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14Unj3-0005W4-00 for rsgb_lf_group@blacksheep.org; Mon, 19 Feb 2001 10:39:26 +0000 Received: from modem-41.silicon.dialup.pol.co.uk ([62.136.13.41] helo=robing) by cmailg1.svr.pol.co.uk with smtp (Exim 3.13 #0) id 14UnX7-0006bk-00 for rsgb_lf_group@blacksheep.org; Mon, 19 Feb 2001 10:27:06 +0000 Message-ID: <003801c09a60$6965efc0$290d883e@robing> From: "Robin T. Greenwood" To: rsgb_lf_group@blacksheep.org References: <000c01c099e9$33c43420$4ba874d5@w8k3f0> <001001c09a01$18269380$b7ca28c3@ericadodd> Subject: LF: Re: Re: Fw: Active antenna Date: Mon, 19 Feb 2001 10:37:01 -0000 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 5.50.4133.2400 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: Peter. I have a Decca Preamp mounted on my Garden shed (Height 3.5 M.) and I have a 0.75M. steel whip on it. The shed is well away from any other buildings and the antenna seems to be excellent although I have little else to compare it with. I will scan the circuit and send it to you. I have The LH0002 in obsolete but an LM6321in OKin the circuit. I have laid out a PCB to which I added a single parallel 136 kHz. tuned circuit across the input. The layout is available as a HPGL file for anyone interested. I think the Decca drum antenna was that shape it was for electrostatic reasons. The Decca signal were quite strong at each others site, so I guess a high elevation was not necessary. However I now wish I had picked up the drum and support pole when I had them in my hand. I could have put the bird feeder on to to keep off the squirrels and cat!! Robin G3LBA ----- Original Message ----- From: "g3ldo" To: Sent: Sunday, February 18, 2001 11:13 PM Subject: LF: Re: Fw: Active antenna