Return-Path: Received: (qmail 14873 invoked from network); 9 Jun 2004 12:57:35 -0000 Received: from unknown (HELO ptb-mxscan03.plus.net) (212.159.14.237) by ptb-mailstore03.plus.net with SMTP; 9 Jun 2004 12:57:35 -0000 Received: (qmail 58958 invoked from network); 9 Jun 2004 12:57:35 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore03.plus.net (212.159.14.217) by ptb-mxscan03.plus.net with SMTP; 9 Jun 2004 12:57:33 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1BY2e5-000FDK-SF for dave@picks.force9.co.uk; Wed, 09 Jun 2004 13:57:33 +0100 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BY2df-0002Nr-OR for rs_out_1@blacksheep.org; Wed, 09 Jun 2004 13:57:07 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BY2df-0002Ni-CS for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 13:57:07 +0100 Received: from cmailm4.svr.pol.co.uk ([195.92.193.211]) by relay.salmark.net with esmtp (Exim 4.24) id 1BY9CB-0003Ax-E6 for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 20:57:11 +0100 Received: from modem-31.bregolas.dialup.pol.co.uk ([62.136.142.31] helo=d6y6c7) by cmailm4.svr.pol.co.uk with smtp (Exim 4.14) id 1BY2dZ-0006gq-Pt for rsgb_lf_group@blacksheep.org; Wed, 09 Jun 2004 13:57:02 +0100 X-Bad-Message-ID: no DNS (d6y6c7) Message-ID: <000f01c44e21$419f6930$1f8e883e@d6y6c7> From: "Lawrence Mayhead" To: rsgb_lf_group@blacksheep.org Date: Wed, 9 Jun 2004 13:56:20 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=no,RCVD_IN_SORBS=0.1 Subject: LF: re Xtal osc "delta emitter" tuning 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-PN-SPAMFiltered: yes X-Spam-Rating: 2 Thanks Bob for the sugestion, I have been looking for a means to pull the oscillator that I use for QRS and DFCW. The cap. in series with the xtal gives me coarse adjustment and now the emitter resistance change enables a "fine tune". I am able to achieve 0.5hz shift in the final 137 khz output. although I need to reduce the emitter resistance by 50% to achieve this. 73 Laurie.