Return-Path: Received: (qmail 353 invoked from network); 18 Dec 2001 12:26:28 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 18 Dec 2001 12:26:28 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 12703 invoked from network); 18 Dec 2001 12:26:20 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 18 Dec 2001 12:26:20 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16GIfq-00010a-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 18 Dec 2001 11:44:42 +0000 Received: from e21.nc.us.ibm.com ([32.97.136.227] helo=e21) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16GIfp-00010V-00 for rsgb_lf_group@blacksheep.org; Tue, 18 Dec 2001 11:44:41 +0000 Received: from southrelay01.raleigh.ibm.com (southrelay01.raleigh.ibm.com [9.37.3.208]) by e21 (8.9.3/8.9.3) with ESMTP id FAA87536 for ; Tue, 18 Dec 2001 05:40:21 -0600 Received: from usa.net (ss2.bld.socks.ibm.com [9.14.4.67]) by southrelay01.raleigh.ibm.com (8.11.1m3/NCO v5.01) with ESMTP id fBIBhgI103300 for ; Tue, 18 Dec 2001 06:43:52 -0500 Message-ID: <3C1F2BA3.77F542DE@usa.net> Date: Tue, 18 Dec 2001 12:42:27 +0100 From: "Alberto di Bene" X-Mailer: Mozilla 4.78 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: LF: Re: long haul QSO's References: <003301c186e8$dabdefe0$9fa1883e@g3aqc> <5.1.0.14.0.20011217162715.00abb350@gemini.herts.ac.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: James Moritz wrote: > -Simple TX hardware; The 7 tone multi-FSK signal could be generated using a > VCXO circuit keyed by an extremely simple interface from an 8 bit printer > port; for example, an extension of G3AQC's DFCW generator. > [...] Hello James and the group, what you all think about the best method of generating multiple, sequential frequencies from an LF transmitter? The parallel port method, just suggested by Jim Moritz, or a sine signal generated by the sound card ? Or maybe another, simpler, method ? Just asking, as you all have much greater experience than I have on putting together an LF TX. Thanks for any reply. 73 Alberto I2PHD P.S. Which is more correct in English : "thanks for any reply" or "thanks for any replies" ?? The two forms seem to be both used...