Return-Path: Received: (qmail 24387 invoked from network); 22 Feb 2002 21:45:12 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 22 Feb 2002 21:45:12 -0000 Received: (qmail 29571 invoked from network); 22 Feb 2002 21:45:11 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 22 Feb 2002 21:45:11 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16eOz2-0002dQ-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 22 Feb 2002 23:20:08 +0000 Received: from mta2-svc.virgin.net ([62.253.164.42]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16eOz1-0002dL-00 for rsgb_lf_group@blacksheep.org; Fri, 22 Feb 2002 23:20:07 +0000 Received: from ian ([62.252.133.129]) by mta2-svc.virgin.net (InterMail vM.4.01.03.27 201-229-121-127-20010626) with SMTP id <20020222214206.IJJB4469.mta2-svc.virgin.net@ian> for ; Fri, 22 Feb 2002 21:42:06 +0000 Message-ID: <000501c1bbea$30b20900$8185fc3e@ian> From: "Ian Kyle" To: rsgb_lf_group@blacksheep.org Subject: LF: Off topic help wanted. Date: Fri, 22 Feb 2002 21:43:59 -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 6.00.2600.0000 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: Can anyone point me in the direction of information about Cohn type filter design as applied to ladder crystal filters? Also info on Motorola MRF286 devices? Now on topic. At long last metal is being tortured and rebuilding actually in progress on the 73 KHz kit, aided by the acquisition of a TS850 with narrow filters. Long way to go but at least on the way. 73 de, Ian GI8AYZ/MI0AYZ