Return-Path: Received: from mtain-db11.r1000.mx.aol.com (mtain-db11.r1000.mx.aol.com [172.29.64.95]) by air-md01.mail.aol.com (v129.4) with ESMTP id MAILINMD013-8b764cc73f5133e; Tue, 26 Oct 2010 16:51:29 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db11.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2879F3800007F; Tue, 26 Oct 2010 16:51:28 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PAqSu-0007i2-4N for rs_out_1@blacksheep.org; Tue, 26 Oct 2010 21:49:52 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PAqSt-0007ht-PB for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 21:49:51 +0100 Received: from mail-gy0-f171.google.com ([209.85.160.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PAqSq-0006oc-Bh for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 21:49:51 +0100 Received: by gyd12 with SMTP id 12so3405038gyd.16 for ; Tue, 26 Oct 2010 13:49:41 -0700 (PDT) Received: by 10.216.38.149 with SMTP id a21mr2250656web.35.1288126180905; Tue, 26 Oct 2010 13:49:40 -0700 (PDT) Received: from stbryant-mac2.lan (dyn45-225.adsl.bogons.net [85.158.45.225]) by mx.google.com with ESMTPS id e56sm5376773wer.22.2010.10.26.13.49.39 (version=SSLv3 cipher=RC4-MD5); Tue, 26 Oct 2010 13:49:40 -0700 (PDT) Message-ID: <4CC73EE2.1070307@g3ysx.org.uk> Date: Tue, 26 Oct 2010 21:49:38 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.11) Gecko/20101013 Lightning/1.0b2 Thunderbird/3.1.5 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org CC: Roger Lapthorn References: In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Simple, low cost, 8.970kHz stable source? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: 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-aol-global-disposition: G x-aol-sid: 3039ac1d405f4cc73f4f7d07 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) On 26/10/2010 18:04, Roger Lapthorn wrote: > What do people think is the simplest, lowest cost, way of generating a > stable 8.970kHz frequency that does not require a PC when running? I > thought of an HF crystal divided down by 256 (from 2.296320MHz), but > have you tried to buy a "made to order" crystal lately? > > 73 > Roger G3XBM > -- > http://g3xbm-qrp.blogspot.com/ > http://www.g3xbm.co.uk > http://www.youtube.com/user/g3xbm > G3XBM GQRP 1678 ISWL G11088 Roger Does your NOV require you to run on 8.970 exact. I seem to remember that it allowed you to go above 9.000, in which case a multiple of 9MHz might be easier to find and simple to divide. 73 Stewart/G3YSX