Return-Path: Received: (qmail 19317 invoked from network); 1 Jun 2000 12:25:40 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 1 Jun 2000 12:25:40 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12xTuZ-0003yJ-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 01 Jun 2000 13:17:19 +0100 Content-Transfer-Encoding: 8bit Received: from smtper.inrete.it ([212.110.32.184] helo=mailer.inrete.it) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12xTuY-0003yE-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Jun 2000 13:17:18 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from cel266 (ppp-151-20-78-60.151-20.libero.it [151.20.78.60]) by mailer.inrete.it (8.8.8/8.8.8) with SMTP id OAA18723 for ; Thu, 1 Jun 2000 14:17:11 +0200 Date: Thu, 1 Jun 2000 14:17:11 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <4.1.20000601131141.01835df0@mailer.inrete.it> X-Sender: spin@mailer.inrete.it X-Mailer: QUALCOMM Windows Eudora Pro Versione 4.1 Data: Thu, 01 Jun 2000 13:17:32 +0100 To: rsgb_lf_group@blacksheep.org From: "M. Bruno" Subject: LF: Slow CW, BPSK, machine modes In-reply-to: <393648EF.ADBCDF55@usa.net> 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: In 14.06 01/06/00 , hai scritto: >Kevin Ravenhill wrote : > >> The general consensus of opinion seems to be that if you are going to use >> "machine" modes, BPSK has considerable superiority over any form of slow CW >> for the kind of very weak signals often encountered on the LF bands. > >When you say "machine" modes, are you meaning CW decoded by software or >by the brain (be it aurally or visually) ? There is a profound difference... > >73, >Alberto I2PHD > > I agree, visually decoded CW is NOT a machine mode; the final decoding being done by the operator eye-brain, instaead of ear-brain. I found it fascinating for that reason; you have to add some operator skill. BPSK is a real machine mode; somebody talks about having a large bell calling him when AFRICA locks on a signal. I see no interest in this, except for propagation studies. A QSO obtained trying day after day, by previous schedule and so on, is more rewarding to me. 73, Marco IK1ODO