Return-Path: Received: (qmail 59643 invoked from network); 23 Nov 2004 13:13:50 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore02.plus.net with SMTP; 23 Nov 2004 13:13:50 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CWamS-0000ac-9n for dave@picks.force9.co.uk; Tue, 23 Nov 2004 13:32:29 +0000 Received: from [192.168.67.2] (helo=ptb-mxcore02.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CWamS-0000aY-6M for dave@picks.force9.co.uk; Tue, 23 Nov 2004 13:32:28 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1CWaUP-000NnK-Ex for dave@picks.force9.co.uk; Tue, 23 Nov 2004 13:13:49 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CWaTa-0008Ft-HO for rs_out_1@blacksheep.org; Tue, 23 Nov 2004 13:12:58 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CWaTa-0008Fk-6S for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2004 13:12:58 +0000 Received: from one.surfree.co.uk ([195.80.0.234]) by relay.thorcom.net with esmtp (Exim 4.41) id 1CWaTP-0008KY-PR for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2004 13:12:58 +0000 Received: from standalone ([212.248.140.49]) by one.surfree.co.uk (8.9.3/8.9.3) with SMTP id OAA00886 for ; Tue, 23 Nov 2004 14:08:38 GMT Received: by localhost with Microsoft MAPI; Tue, 23 Nov 2004 13:10:18 -0000 Message-ID: <01C4D15D.C7A21B30.actalbot@southsurf.com> From: Andy To: "'rsgb_lf_group@blacksheep.org'" Date: Tue, 23 Nov 2004 13:10:16 -0000 Importance: high X-Priority: 1 (Highest) Organization: UKNWN(UK) X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211 MIME-Version: 1.0 X-SPF-Result: relay.thorcom.net: 195.80.0.234 is neither permitted nor denied by domain of southsurf.com X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=no,RCVD_IN_SORBS=0.1,X_PRIORITY_HIGH=0.516 Subject: RE: LF: Linear amplifiers Content-Type: text/plain; charset=us-ascii; 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=0.5 required=5.0 tests=X_PRIORITY_HIGH 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) I used to use a variation of an early version of it on 73kHz. Wasn't very efficient on 137kHz while keeping good linearity for PSK31 and similar, so I built the 700W Switch Mode instead of trying to improve it Andy G4JNT On Tuesday, November 23, 2004 12:51 PM, Mike Dennison [SMTP:mike.dennison@ntlworld.com] wrote: > > G0MRF Linear Amp. Complete construction article on his site. > > Mike > > WE0H > > WD2XGI > > Yes, I was aware of that one, though ironically Dave's web > site was down when I was writing the book! > > Is this what everyone uses? > > Mike, G3XDV > =========== >