Return-Path: Received: from rly-mc02.mail.aol.com (rly-mc02.mail.aol.com [172.20.118.144]) by air-mc04.mail.aol.com (v120.9) with ESMTP id MAILINMC44-109472dcf565a; Sun, 04 Nov 2007 08:55:55 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mc02.mail.aol.com (v120.9) with ESMTP id MAILRELAYINMC25-109472dcf565a; Sun, 04 Nov 2007 08:55:35 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1IofwG-0008Kp-9E for rs_out_1@blacksheep.org; Sun, 04 Nov 2007 13:54:56 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1IofwF-0008Kg-Pq for rsgb_lf_group@blacksheep.org; Sun, 04 Nov 2007 13:54:55 +0000 Received: from mtiwmhc13.worldnet.att.net ([204.127.131.117]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1IofwB-00053f-NX for rsgb_lf_group@blacksheep.org; Sun, 04 Nov 2007 13:54:55 +0000 Received: from [10.0.252.101] (wan.stanlynet.org?[166.82.181.2]) by worldnet.att.net (mtiwmhc13) with ESMTP id <2007110413543911300k7aa7e>; Sun, 4 Nov 2007 13:54:44 +0000 Message-ID: <472DCF27.5020708@att.net> Date: Sun, 04 Nov 2007 08:54:47 -0500 From: Dexter McIntyre W4DEX User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <000701c81ede$3af050e0$1ae4fc3e@g3kev> In-Reply-To: <000701c81ede$3af050e0$1ae4fc3e@g3kev> X-Spam-Score: 0.5 (/) X-Spam-Report: autolearn=disabled,AWL=-2.240,RCVD_IN_SBL=2.712 Subject: Re: LF: CLASS D and E 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-Level: 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-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : X-Mailer: Unknown (No Version) 86% efficiency at 400 watts out with GØMRF amp and MØBMU mod is what I get. W4DEX, WD2XKO hamilton mal wrote: > Hi all > Class D and E amplifiers are supposed to give around 80/90 % efficiency. Has > anyone actually achieved these figures. It seems anything above 60% is hard > to arrive at using normal coils/capacitors. > > 73 de Mal/G3KEV > > >