Return-Path: Received: (qmail 13458 invoked from network); 21 Feb 1999 23:05:15 -0000 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by medusa.plus.net.uk with SMTP; 21 Feb 1999 23:05:15 -0000 Received: (qmail 4897 invoked from network); 21 Feb 1999 23:06:06 -0000 Received: from post.thorcom.com (194.75.130.70) by magnet.plus.net.uk with SMTP; 21 Feb 1999 23:06:06 -0000 Received: from troy.blacksheep.org ([194.75.183.50] ident=root) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10Ef6J-0006Wj-01; Sun, 21 Feb 1999 20:03:39 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id QAA02257 for rsgb_lf_group-outgoing; Sat, 20 Feb 1999 16:12:02 GMT Received: from post.thorcom.com (root@[194.75.183.70]) by troy.blacksheep.org (8.6.12/8.6.12) with ESMTP id QAA02029 for ; Sat, 20 Feb 1999 16:04:15 GMT Received: from hil-img-9.compuserve.com ([149.174.177.139]) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10DuJV-00080a-00 for rsgb_lf_group@blacksheep.org; Fri, 19 Feb 1999 18:06:09 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: (from root@localhost) by hil-img-9.compuserve.com (8.8.6/8.8.6/2.18) id NAA23479 for rsgb_lf_group@blacksheep.org; Fri, 19 Feb 1999 13:02:20 -0500 (EST) Date: Fri, 19 Feb 1999 13:01:07 -0500 From: "'Geri' Kinzel, DK8KW" Subject: LF: Re LF Xtal/mixer Exciters/Synthesizer To: rsgb_lf_group@blacksheep.org Message-ID: <199902191301_MC2-6B20-3B7D@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Disposition: inline Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Hallo Lowfers, Peter, G3LDO mentioned his difficulties to build a reliable and stabile exciter for LF and describes the solution developed by DJ1ZB. I myself also had my difficulties to build a solution from scratch. After experimenting with 5-6 MHz VFOs and frequency dividers, I came accross a nice synthesizer kit. With a frequency range between 1 Hz (!) and 54 MHz (!) it is a real overkill for the LF band, but the features contained in it are excellent for what we are doing. The resolution is 1 Hz, the accuracy, once calibrated is in the same range and long time stability is excellent