Envelope-to: dave@picks.force9.co.uk Delivery-date: Thu, 05 Jan 2006 13:25:41 +0000 Received: by ptb-mxcore02.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1EuV7c-0005z4-GQ for dave@picks.force9.co.uk; Thu, 05 Jan 2006 13:25:41 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (PlusNet MXCore v2.00) id 1EuV7c-0005yV-CI for dave@picks.force9.co.uk; Thu, 05 Jan 2006 13:25:40 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1EuV7I-0003c3-Qu for rs_out_1@blacksheep.org; Thu, 05 Jan 2006 13:25:20 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1EuV7I-0003bu-Ei for rsgb_lf_group@blacksheep.org; Thu, 05 Jan 2006 13:25:20 +0000 Received: from newbox.tcp.net.uk ([195.80.0.243]) by relay2.thorcom.net with esmtp (Exim 4.51) id 1EuVbu-0007j2-17 for rsgb_lf_group@blacksheep.org; Thu, 05 Jan 2006 13:57:01 +0000 Received: from standalone ([212.248.140.54]) by newbox.tcp.net.uk (8.12.7/8.12.7) with SMTP id k05DRlhA010139 for ; Thu, 5 Jan 2006 13:27:48 GMT Message-ID: <001501c611fb$24b25bd0$368cf8d4@standalone> From: "Andy" To: rsgb_lf_group@blacksheep.org Date: Thu, 5 Jan 2006 13:22:55 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 X-TCP-MailScanner-Information: Please visit www.tcp.co.uk for more information X-TCP-MailScanner: Found to be clean X-TCP-MailScanner-SpamScore: s X-TCP-MailScanner-From: actalbot@southsurf.com Subject: LF: 700W LF Transmitter Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit 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-PN-SpamFiltered: by PlusNet MXCore (v2.00) By permission of QEX, I've posted the full version of the 700 Watt 137kHz switch mode Tx that originally appeared in the Nov/Dec 2002 issues on www.scrbg.org/g4jnt/ This generated RFdirect from rectified 240V mains in a half-bridge design with a tank circuit, broadly using the same concept as the Decca units. Andy G4JNT