Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp03.r1000.mx.aol.com (Internet Inbound) with ESMTP id E02F338000096; Thu, 5 Jul 2012 16:45:15 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Smsuh-0002fq-42 for rs_out_1@blacksheep.org; Thu, 05 Jul 2012 21:44:35 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Smsuf-0002fJ-W9 for rsgb_lf_group@blacksheep.org; Thu, 05 Jul 2012 21:44:33 +0100 Received: from mailout02.t-online.de ([194.25.134.17]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Smsud-0000CP-EH for rsgb_lf_group@blacksheep.org; Thu, 05 Jul 2012 21:44:32 +0100 Received: from fwd18.aul.t-online.de (fwd18.aul.t-online.de ) by mailout02.t-online.de with smtp id 1Smsuc-0004Qp-21; Thu, 05 Jul 2012 22:44:30 +0200 Received: from [192.168.2.32] (GcJf+wZvYhoMGkrt2mT-jQi-42eaPb0dNimd05FS9B3dfDKW1oZEtrICitCfiLHQIz@[79.237.189.215]) by fwd18.t-online.de with esmtp id 1Smsua-1XhIH20; Thu, 5 Jul 2012 22:44:28 +0200 MIME-Version: 1.0 From: hajo.brandt.dj1zb@t-online.de References: <7E7DFBB4D102A04DB5ADC88D66628A4A0FAB99CC@ICTS-S-MBX5.luna.kuleuven.be> <1SmrFA-199XcW0@fwd21.t-online.de> <4FF5EB68.9040507@iup.uni-heidelberg.de> In-Reply-To:<4FF5EB68.9040507@iup.uni-heidelberg.de> To: X-Mailer: T-Online eMail 6.08.0003 Date: 05 Jul 2012 20:44 GMT Message-ID: <1Smsua-1XhIH20@fwd18.t-online.de> X-ID: GcJf+wZvYhoMGkrt2mT-jQi-42eaPb0dNimd05FS9B3dfDKW1oZEtrICitCfiLHQIz X-TOI-MSGID: 0d66af21-0d90-408a-b7e6-9b1d6e682efa X-RFC2822-Warning: Obsolete format in Date: header X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Dear Stefan, Yes. xtal 7,02 MHz will run stable, and xtal 6,5536 MHz must be pulled down by 12,6 kHz to 6,5410 MHz. A coil in series to the crystal and the tuning capacitor will do this, in its simpiest form by using a molded rf choke. [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [194.25.134.17 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-Scan-Signature: a6b6ffaf48fdddf1ed5c25dc4bf03ee1 Subject: Re: LF: RE: Analog oscillators Content-Type: Text/Plain; Charset="ISO-8859-1" Content-Transfer-Encoding: 8Bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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-aol-global-disposition: G x-aol-sid: 3039ac1dc1474ff5fcdb063b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dear Stefan, Yes. xtal 7,02 MHz will run stable, and xtal 6,5536 MHz must be pulled down by 12,6 kHz to 6,5410 MHz. A coil in series to the crystal and the tuning capacitor will do this, in its simpiest form by using a molded rf choke. Or 7,0200 MHz is adjusted for 7,0256 MHz, then 6,5536 Mhz will deliver a difference frequency of 472 kHz. And when 6,5536 MHz is pulled down to 5.6466 MHz, the difference will be 479 kHz. OK? 73 Ha-Jo, DJ1ZB "Stefan Schäfer" schrieb: > Hello Ha-Jo, > > Can you pull one of the xtals to cover the whole band? > > 73, Stefan > > Am 05.07.2012 20:57, schrieb hajo.brandt.dj1zb@t-online.de: > > Dear all, > > > > the only parts I have bought so far for MF (still beeing engaged in > > other developments) are two crystals: 6,5536 MHz and 7,0200 MHz, to be > > mixed with each other. The mixer is another bipolar transistor, and its > > emitter current is being keyed. A final source follower after the > > low-pass filter will deliver the output to 50 ohms. > > > > The same solution I have also used on LF. > > > > 73 Ha-Jo, DJ1ZB > > > > > > > >