Return-Path: Received: (qmail 25270 invoked from network); 4 Nov 2002 10:22:04 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 4 Nov 2002 10:22:04 -0000 Received: (qmail 15305 invoked by uid 10001); 4 Nov 2002 10:25:59 -0000 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 4 Nov 2002 10:25:59 -0000 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 188dIu-0003jd-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 04 Nov 2002 09:13:52 +0000 Received: from [212.159.14.225] (helo=murphys.services.quay.plus.net) by post.thorcom.com with smtp (Exim 4.10) id 188dIu-0003jH-00 for rsgb_lf_group@blacksheep.org; Mon, 04 Nov 2002 09:13:52 +0000 Received: (qmail 4149 invoked from network); 4 Nov 2002 09:13:17 -0000 Received: from modem-205-40-60-62.vip.uk.com (HELO hugh) (62.60.40.205) by murphys.services.quay.plus.net with SMTP; 4 Nov 2002 09:13:17 -0000 Message-ID: <000f01c283e1$fc9e2ca0$0504210a@c.scope> From: "g6tmk" To: rsgb_lf_group@blacksheep.org Date: Mon, 4 Nov 2002 09:09:46 -0000 MIME-Version: 1.0 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 Subject: LF: Re: Siemens D2006 Selective Level Meter/Pelelmesser Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=1.3 required=5.0tests=SPAM_PHRASE_03_05,USER_AGENT_OEversion=2.42 X-Spam-Level: * Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Hello Jan, Interesting question. The 80Hz filter is a crystal filter, so it is hard to change it's frequency, without redesigning it for different crystals. I don't have a manual for my D2006., so I don't know what adjustments there are, or what the circuit is. Denis, F6CRP has two D2006's in his shack, and has investigated the IF bandwidths. His website ... (notice he has both French and English versions of the site) http://perso.wanadoo.fr/f6crp/0english/denise5.htm His E-mail address: f6crp@wanadoo.fr I should be interested to know what you find out. 73 Hugh M0WYE / G6TMK