X-GM-THRID: 1230478019833892582 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.115.73.3 with SMTP id a3cs26652wal; Fri, 9 Mar 2007 14:46:08 -0800 (PST) Received: by 10.66.232.9 with SMTP id e9mr10624434ugh.1173480368266; Fri, 09 Mar 2007 14:46:08 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id q1si5180335uge.2007.03.09.14.46.07; Fri, 09 Mar 2007 14:46:08 -0800 (PST) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HPnod-0008PR-CS for rs_out_1@blacksheep.org; Fri, 09 Mar 2007 22:43:59 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HPnoc-0008PH-Sv for rsgb_lf_group@blacksheep.org; Fri, 09 Mar 2007 22:43:58 +0000 Received: from pne-smtpout1-sn1.fre.skanova.net ([81.228.11.98]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HPnoZ-0007GB-49 for rsgb_lf_group@blacksheep.org; Fri, 09 Mar 2007 22:43:58 +0000 Received: from [127.0.0.1] (62.20.250.132) by pne-smtpout1-sn1.fre.skanova.net (7.2.076.2) (authenticated as u33233109) id 45AE5BE800D6C7B8 for rsgb_lf_group@blacksheep.org; Fri, 9 Mar 2007 23:43:49 +0100 Message-ID: <45F1E327.3060200@telia.com> Date: Fri, 09 Mar 2007 23:43:51 +0100 From: "Johan H. Bodin" User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <128501c76290$67010040$4e6f6a58@wgt01> <45F1D746.6010607@telia.com> <001f01c76298$cb2ca440$0300a8c0@lark> In-Reply-To: <001f01c76298$cb2ca440$0300a8c0@lark> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: RE: 500 G3WCB QRV 503.500kHz Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 Status: O X-Status: X-Keywords: X-UID: 2197 Hi Gary, Alan, yes, as Alan says, class E amplifiers are very forgiving. In addition to Tonne's program and Alan's Excel spreadsheet you may want to have a look at Nathan Sokal's QEX article to learn how to tune the amplifier for maximum efficiency using an oscilloscope looking at the FET drain waveform. Adjust the FET parallel C and the series LC tank to get a "soft landing" before FET turn-on again. http://www.classeradio.com/sokal2corrected.pdf By the way, Nathan Sokal, WA1HQC, "invented" class E! Alan Melia skrev: > So will my Excel spreadsheet