Return-Path: Received: (qmail 17856 invoked from network); 23 Nov 2004 14:02:02 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 23 Nov 2004 14:02:02 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CWbX6-000Cp4-5v for dave@picks.force9.co.uk; Tue, 23 Nov 2004 14:20:40 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CWbX5-000Col-Fb for dave@picks.force9.co.uk; Tue, 23 Nov 2004 14:20:39 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1CWbF2-000Gvd-0F for dave@picks.force9.co.uk; Tue, 23 Nov 2004 14:02:00 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CWbDz-0008V1-27 for rs_out_1@blacksheep.org; Tue, 23 Nov 2004 14:00:55 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CWbDy-0008Us-Mu for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2004 14:00:54 +0000 Received: from smtpout03-04.mesa1.secureserver.net ([64.202.165.74]) by relay.thorcom.net with smtp (Exim 4.41) id 1CWbDp-0008VC-T7 for rsgb_lf_group@blacksheep.org; Tue, 23 Nov 2004 14:00:54 +0000 Received: (qmail 11842 invoked from network); 23 Nov 2004 14:00:36 -0000 Received: from unknown (208.37.242.34) by smtpout03-04.mesa1.secureserver.net (64.202.165.74) with ESMTP; 23 Nov 2004 14:00:36 -0000 Message-ID: <001601c4d166$7a260d40$3801a8c0@JKA> From: "John Andrews" To: rsgb_lf_group@blacksheep.org References: <3.0.6.32.20041123084747.00c3d4f0@magma.ca> Date: Tue, 23 Nov 2004 09:12:32 -0500 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-SPF-Result: relay.thorcom.net: 64.202.165.74 is neither permitted nor denied by domain of w1tag.com X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=no, Subject: Re: LF: Linear amplifiers , MSK, and 500kHz 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) Bill, et al: > I gave up on it. But if you do go back to it, I'll be happy to participate. There are probably enough of us who have the necessary hardware to do some real world tests. And back to Mike Dennison's query: I am still using the Hafler audio amp, and running 250-300 watts at 137 kHz. I should probably do some 2-tone tests to evaluate the linearity. I can testify to the low efficiency, however, as the shack is comfortably warm. John Andrews