Return-Path: Received: (qmail 5619 invoked from network); 22 Oct 2002 17:45:30 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 22 Oct 2002 17:45:30 -0000 Received: (qmail 19395 invoked by uid 10001); 22 Oct 2002 18:51:21 -0000 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 22 Oct 2002 18:51:21 -0000 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18436c-0008QX-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 22 Oct 2002 18:46:14 +0100 Received: from [206.173.118.93] (helo=uhura.concentric.net) by post.thorcom.com with esmtp (Exim 4.10) id 18436b-0008QO-00 for rsgb_lf_group@blacksheep.org; Tue, 22 Oct 2002 18:46:13 +0100 Received: from cliff.concentric.net (cliff.concentric.net [206.173.118.90]) by uhura.concentric.net [Concentric SMTP Routing 1.0] id g9MHjWt25473 for ; Tue, 22 Oct 2002 13:45:33 -0400 (EDT) Received: from jka ([208.37.242.34]) by cliff.concentric.net (8.9.1a) id NAA11007; Tue, 22 Oct 2002 13:45:31 -0400 (EDT) Message-ID: <002501c279f2$d95a1040$09dc9384@jka> From: "John Andrews" To: rsgb_lf_group@blacksheep.org References: <3DB0C203.A90691A6@verizon.net> <000801c279ad$b339adc0$f530f7c2@a7j7r2> <3DB55E79.50901@usa.net> Date: Tue, 22 Oct 2002 13:45:44 -0400 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re: Re: Vacuum tubes on Motherboards... Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.5 required=5.0tests=REFERENCES,SPAM_PHRASE_00_01,USER_AGENT_OEversion=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group I'd agree with Alberto's comments on IF filtering. Another possible issue from the '60s would be crossover distortion in solid-state AF power amplifier stages. Sounds nasty, especially on CW. John Andrews, W1TAG