Return-Path: Received: (qmail 1473 invoked from network); 12 May 2000 20:11:45 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 12 May 2000 20:11:45 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12qLgC-0001to-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 12 May 2000 21:05:00 +0100 Received: from smtp13.bellglobal.com ([204.101.251.52]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12qLgB-0001tj-00 for rsgb_lf_group@blacksheep.org; Fri, 12 May 2000 21:04:59 +0100 Received: from server1 (ppp137.on.bellglobal.com [206.172.245.137]) by smtp13.bellglobal.com (8.8.5/8.8.5) with SMTP id QAA27422 for ; Fri, 12 May 2000 16:08:12 -0400 (EDT) Message-ID: <004001bfbc4c$af30ca90$0a00a8c0@server1.ThreeLakes.ca> From: "Larry Kayser" To: rsgb_lf_group@blacksheep.org Subject: LF: Re: Optimal width for LF? Date: Fri, 12 May 2000 15:59:11 -0400 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 4.72.3110.5 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: Petr asked: >What bandwidth do you use and what is the experience?< I have a W&G selective level meter AT-611 that has a 24 Hz filter and it is great and I like it very much. I would be happy down to 10 or 15 Hz as well, all copy visually on CRT. I have copied the Indian LF CW signal and it is easy to copy at the 12 wpm speed (about) that he was sending. For me, the goal of the IF filter is to knock down adjacent QRM as quickly as possible. I have not regularly physically tuned a radio for some years now, I prefer all tuning to be by the keyboard or under Mouse control. The use of precise incremental frequency steps in tuning makes the use of very narrow filters somewhat easier but it has taken practice however I find it more comfortable now to operate this way. Larry VA3LK