Return-Path: Received: (qmail 4349 invoked from network); 3 Oct 1999 23:51:57 +0100 Received: from unknown (HELO magnet.force9.net) (195.166.128.26) by guiness.force9.net with SMTP; 3 Oct 1999 23:51:57 +0100 Received: (qmail 24800 invoked from network); 3 Oct 1999 22:57:48 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnet.plus.net.uk with SMTP; 3 Oct 1999 22:57:48 -0000 Content-Transfer-Encoding: 8bit Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 11XuMP-0004Li-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 03 Oct 1999 23:44:05 +0100 Received: from gatef.bbc.co.uk ([132.185.132.15] helo=gatef.kw.bbc.co.uk) by post.thorcom.com with esmtp (Exim 3.02 #1) id 11XuMO-0004Ld-00 for rsgb_lf_group@blacksheep.org; Sun, 03 Oct 1999 23:44:04 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from sunf0.rd.bbc.co.uk (ddmailgate.rd.bbc.co.uk [132.185.128.104]) by gatef.kw.bbc.co.uk (8.8.5/8.7.2) with SMTP id XAA14966 for ; Sun, 3 Oct 1999 23:44:02 +0100 (BST) Received: from pc523 ([172.28.38.1]) by sunf0.rd.bbc.co.uk; Sun, 3 Oct 99 23:43:57 BST X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3.0.5.32.19991003234328.00a238c0@sunf0> X-Sender: simonlh@sunf0 X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sun, 03 Oct 1999 23:43:28 +0100 To: rsgb_lf_group@blacksheep.org From: "Simon Lloyd-Hughes" Subject: Re: Re: LF: re Toni's comments on the 7030 and filters In-reply-to: References: <008401bf0ab3$17e3ebe0$16fbabc3@default> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: There is a simple circuit in this months Practical Wireless. At 08:40 30/09/99 +1, you wrote: >Dear Alan, > >if I understand well,you are receiving CW by ear, not by >Spectrogram. > >For receiving CW by ears I found very useful a stereo processor, >like that described in > >http://hem2.passagen.se/sm0vpo/use/stereo.htm > >which allow to "spatially" spread signals (and noise) " in front of >you": > >lower frequency signals are stronger in the left earphone >speaker, and higher frequency in the right one. In this way you can >simply concentrate your brain in the signal coming from a certain >"virtual direction" > >It's interesting with large filters (e.g. 500 Hz), however I never >tryied it with narrower filters. It may need some adjustment... > >73 Aldo IZ1ANT > > > >