Return-Path: Received: (qmail 15391 invoked from network); 8 Feb 2001 08:57:23 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by 10.226.25.101 with SMTP; 8 Feb 2001 08:57:23 -0000 Received: (qmail 29208 invoked from network); 8 Feb 2001 09:01:06 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 8 Feb 2001 09:01:06 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14QmpW-000374-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 08 Feb 2001 08:53:30 +0000 X-MSMail-Priority: Normal Received: from mail.cc.kuleuven.ac.be ([134.58.10.6]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14QmpT-00036z-00 for rsgb_lf_group@blacksheep.org; Thu, 08 Feb 2001 08:53:27 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail.cc.kuleuven.ac.be (8.9.3/8.9.0) with SMTP id JAA180094 for ; Thu, 8 Feb 2001 09:53:12 +0100 Message-ID: <3.0.1.16.20010208104356.09d72570@mail.cc.kuleuven.ac.be> X-Sender: pb623250@mail.cc.kuleuven.ac.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Thu, 08 Feb 2001 10:43:56 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: Re: CW-Keying via Soundcard or PC speaker In-reply-to: <009001c09166$3f71fae0$7479f5cd@wd4kpd> 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: Hi David, as far as I know 90% of all 136kHz transmitters used in Europe are straight CW transmitters with no possibility to modulate SSB. So the most easy (and efficient) way to get QRSS is just keying the TX, for DFCW you can FSK the oscillator. But I intend to make the QRS software as versatile as possible (within reasonable limits) so the next version will probably have soundcard output facilities, but with the option to disable this part in case you encounter conflicts with other software using the soundcard. 73, Rik ON7YD At 00:29 8/02/01 -0000, you wrote: >good info, but the questions beg to be asked...if audio tones can be used >for afsk on all these digimodes, why not vfsk/dfcw/qrss etc. the audio is >just audio. while i know that there is some small problems with overdriving >the tx and generating spurious tones, why can not vfsk/dfsk use the same >techniques as all the other modes? > >i confess i am not a programmer, so dont know about what is involved, but if >one program can do it and not cause problems, then another could also be >made to act the same. > >david