Return-Path: Received: (qmail 75444 invoked from network); 14 Jan 2005 00:39:16 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore02.plus.net with SMTP; 14 Jan 2005 00:39:16 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CpFQU-000862-R2 for dave@picks.force9.co.uk; Fri, 14 Jan 2005 00:35:00 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CpEXH-000DMl-FZ for dave@picks.force9.co.uk; Thu, 13 Jan 2005 23:37:51 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1Cp8eY-000PEv-J3 for dave@picks.force9.co.uk; Thu, 13 Jan 2005 17:20:58 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Cp8cw-0003JL-Je for rs_out_1@blacksheep.org; Thu, 13 Jan 2005 17:19:18 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Cp8cw-0003JC-8G for rsgb_lf_group@blacksheep.org; Thu, 13 Jan 2005 17:19:18 +0000 Received: from mout1.freenet.de ([194.97.50.132]) by relay.thorcom.net with esmtp (Exim 4.43) id 1Cp8ct-0003R7-R8 for rsgb_lf_group@blacksheep.org; Thu, 13 Jan 2005 17:19:18 +0000 Received: from [194.97.55.191] (helo=mx7.freenet.de) by mout1.freenet.de with esmtpa (Exim 4.46) id 1Cp8cS-0004kO-8R for rsgb_lf_group@blacksheep.org; Thu, 13 Jan 2005 18:18:48 +0100 Received: from pd4b9ecd0.dip.t-dialin.net ([212.185.236.208] helo=[192.168.0.200]) by mx7.freenet.de with esmtpsa (ID dl4yhf@freenet.de) (TLSv1:AES256-SHA:256) (Exim 4.43 #13) id 1Cp8cS-0004Z1-0b for rsgb_lf_group@blacksheep.org; Thu, 13 Jan 2005 18:18:48 +0100 Message-ID: <41E6AD88.6000903@freenet.de> Date: Thu, 13 Jan 2005 18:19:04 +0100 From: Wolf DL4YHF User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: de-DE, de, en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <41E58B5D.6070700@freenet.de> <41E5A312.5040500@usa.net> In-Reply-To: <41E5A312.5040500@usa.net> X-Warning: freenet.de is listed at abuse.rfc-ignorant.org X-SPF-Result: relay.thorcom.net: 194.97.50.132 is neither permitted nor denied by domain of freenet.de X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: Re: LF: Simple image-cancelling exciter for digimodes 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) Hello Alberto, Thanks for the point - and Ok about the reversed Tayloe detector : In fact, the circuit -as it is- is already quite similar. One difference is the duty cycle of the switching waveforms (if one would use a fourfold analog switch like the HC4066) for the "Tayloe": For Tayloe switches, it would be 1 / 4 (each switch conducts 25 % of the whole cycle) For the classic image cancelling mixer, the duty cycle is 1 / 2 (50 % conduction in the cycle). Unfortunately the simple quadrature L.O. with two flipflops cannot be modified (without extra components) to produce the "Tayloe"- switching waveforms. Best greetings, Wolf DL4YHF .