Return-Path: Received: (qmail 28324 invoked from network); 9 May 2000 17:42:43 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 9 May 2000 17:42:43 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12pDrr-00013k-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 09 May 2000 18:32:23 +0100 Received: from mserv1a.u-net.net ([195.102.240.34]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12pDrn-000138-00 for rsgb_lf_group@blacksheep.org; Tue, 09 May 2000 18:32:19 +0100 Received: from rsgb.u-net.com ([195.102.80.225] helo=rsgb.org.uk) by mserv1a.u-net.net with esmtp (Exim 2.10 #63) id 12pDrN-0002RU-00 for rsgb_lf_group@blacksheep.org; Tue, 9 May 2000 18:31:54 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from miked by rsgb.org.uk with SMTP (MDaemon.v2.8.7.0.R) for ; Tue, 09 May 2000 18:25:48 +0100 From: "Mike Dennison" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 To: rsgb_lf_group@blacksheep.org Date: Tue, 9 May 2000 18:25:45 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: LF: DFCW Parameters In-reply-to: <3.0.1.16.20000509164652.223f2124@mail.cc.kuleuven.ac.be> References: <3617AC3245C2D1118A840000F805359C017528C4@pdw-mercury-1.der a.gov.uk> X-Mailer: Pegasus Mail for Win32 (v3.11) X-MDaemon-Deliver-To: rsgb_lf_group@blacksheep.org X-Return-Path: miked@mail.rsgbhq Message-ID: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: ON7YD wrote: > DFCW is still a very experimental mode, so not very standardized yet. > Generaly accepted is that the higher frequency stands for 'dash' and the > lower for 'dot'. The frequency shift is dependent on the dot length. For 3 > seconds per dot (that has become a kind of informal standard) a shift of > 4Hz is used. A 1 second 'gap' is used to separate the elements (dots and > dashes) within a character, characters are separated by a gap of 1 dot > length, words by a gap of 2 dot lengths. Rik, Have I misunderstood, or are you saying there is a gap between each dot and each dash? I thought there was no need to do this as the frequency determines whether an element is a dot or dash so a dot three times the dot lenght must be three consecutive dots. Probably me being dumb. Mike, G3XDV (IO91VT) http://www.dennison.demon.co.uk/activity.htm