Return-Path: Received: (qmail 35771 invoked from network); 1 Feb 2005 23:33:49 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 1 Feb 2005 23:33:49 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1Cw7Wu-000D0P-4Y for dave@picks.force9.co.uk; Tue, 01 Feb 2005 23:33:57 +0000 Received: from [192.168.67.2] (helo=ptb-mxcore02.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1Cw7Wt-000D05-7C for dave@picks.force9.co.uk; Tue, 01 Feb 2005 23:33:55 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1Cw7Wk-0006CK-81 for dave@picks.force9.co.uk; Tue, 01 Feb 2005 23:33:46 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Cw7SF-00058Z-If for rs_out_1@blacksheep.org; Tue, 01 Feb 2005 23:29:07 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Cw7SF-00058M-6J for rsgb_lf_group@blacksheep.org; Tue, 01 Feb 2005 23:29:07 +0000 Received: from smtp810.mail.ukl.yahoo.com ([217.12.12.200]) by relay.thorcom.net with smtp (Exim 4.43) id 1Cw7SB-0006zs-O4 for rsgb_lf_group@blacksheep.org; Tue, 01 Feb 2005 23:29:07 +0000 Received: from unknown (HELO w4o8m9) (james.moritz@btopenworld.com@81.131.62.196 with login) by smtp810.mail.ukl.yahoo.com with SMTP; 1 Feb 2005 23:28:57 -0000 Message-ID: <004101c508b5$797c01c0$c43e8351@w4o8m9> From: "James Moritz" To: rsgb_lf_group@blacksheep.org References: Date: Tue, 1 Feb 2005 23:24:58 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MIMEOLE: Produced By Microsoft MimeOLE V5.00.2615.200 X-SPF-Result: relay.thorcom.net: 217.12.12.200 is neither permitted nor denied by domain of btopenworld.com X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: Re: LF: Jason DJ8WX Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Filtered: by PlusNet SpamCORE (v3.00) Dear Gary, LF Group, Just replace the CW carrier with the Jason multi-FSK signal - since the signal has a constant amplitude, using a class D amplifier is not a problem. Frequency shift keying the signal like this does generate some extended sidebands, but these are much smaller than the ones produced by binary PSK, so the signal has a respectable bandwidth. The only remaining problem is how to translate the sound card audio signal up to 137kHz - hence the "phasing" exciters that have been discussed recently. Cheers, Jim Moritz 73 de M0BMU ----- Original Message ----- From: Gary - G4WGT To: Sent: Tuesday, February 01, 2005 6:53 PM Subject: RE: LF: Jason DJ8WX > Hi Uwe, > > I wasn't aware that you could use Jason with a class D Tx (G0MRF 300 w), > please tell me briefly how is it done?