Return-Path: Received: from mtain-dh06.r1000.mx.aol.com (mtain-dh06.r1000.mx.aol.com [172.29.65.26]) by air-df01.mail.aol.com (v129.4) with ESMTP id MAILINDF012-5ee34cc71b62b7; Tue, 26 Oct 2010 14:18:10 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0E16B3800023A; Tue, 26 Oct 2010 14:18:06 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PAo4L-0006PT-Sh for rs_out_1@blacksheep.org; Tue, 26 Oct 2010 19:16:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PAo4L-0006PK-Dk for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 19:16:21 +0100 Received: from mail-bw0-f43.google.com ([209.85.214.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PAo4I-0005sW-Qd for rsgb_lf_group@blacksheep.org; Tue, 26 Oct 2010 19:16:21 +0100 Received: by bwz1 with SMTP id 1so4257749bwz.16 for ; Tue, 26 Oct 2010 11:16:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=8/r+ZLBaJ6OyV+AQhK4BB+rap6A3I74dl4J+nbgOqzA=; b=puRxhXyXX8B/RgGB1UFizzIvdZR+2+Nt1TLJ/pWM/zImQzv1wvTiQCxn5+pyc/9+g4 G7mmom4QvmkIl/mIj0tyhiJ1x4LKL8oCzpIl0F32uQzg/aC9/8+NsvmeMpAliPEnft98 xkHO3r+u6ewldmy+4lbb9yu1iuRaD36k86O9o= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=BouZ3SbnqwoldoLSerMeKHwYeXV3Rfi2BZtOJilgu92XYQDC1GNUZNuaCSzGaL5Aa+ j6Bu3tOjqz4w6TFsXSUpy34h+y3lbl4YiiIrFmIx7ZtiQmxKwy5hEhrpHAXJBSjxcg0a hKIgTL2dg59YAM1TZJFl2PSJVylVDgfObV8GE= MIME-Version: 1.0 Received: by 10.204.68.142 with SMTP id v14mr6509653bki.106.1288116977469; Tue, 26 Oct 2010 11:16:17 -0700 (PDT) Received: by 10.204.23.10 with HTTP; Tue, 26 Oct 2010 11:16:17 -0700 (PDT) In-Reply-To: References: Date: Tue, 26 Oct 2010 19:16:17 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: RE: Simple, low cost, 8.970kHz stable source? Content-Type: multipart/alternative; boundary=001636c5ab5ddf080d0493891ad5 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d246.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d411a4cc71b5e1dae X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --001636c5ab5ddf080d0493891ad5 Content-Type: text/plain; charset=ISO-8859-1 CB crystals.... thanks Rik (and others). This does sound like a sensible and low cost approach. 73s Roger G3XBM On 26 October 2010 19:03, Rik Strobbe wrote: > Roger, > > an easy (and cheap way) might be CB crystals. Most are 3rd overtone in the > range of 26965-27405kHz (= 8988-9135kHz xtal frequency). Divided by 1024 > (eg. using a 74HC4060 as oscillator / divider) you get 8777-8921Hz. > > 73, Rik ON7YD - OR7T > > ------------------------------ > *Van:* owner-rsgb_lf_group@blacksheep.org [ > owner-rsgb_lf_group@blacksheep.org] namens Roger Lapthorn [ > rogerlapthorn@gmail.com] > *Verzonden:* dinsdag 26 oktober 2010 19:04 > *Aan:* rsgb_lf_group@blacksheep.org > *Onderwerp:* LF: Simple, low cost, 8.970kHz stable source? > > 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 > -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 --001636c5ab5ddf080d0493891ad5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable CB crystals.... thanks Rik (and others). This does sound like a sensible= and low cost approach.

73s
Roger G3XBM

On 26 October 2010 19:03, Rik Strobbe <Rik.Strobbe@fys.kuleuven.be> wrote:
Roger,
=A0
an easy (and cheap way) might be CB crystals.=A0Most are 3rd overtone= in the range of 26965-27405kHz (=3D 8988-9135kHz xtal frequency). Divided= by 1024 (eg. using a 74HC4060 as oscillator / divider) you get 8777-8921H= z.
=A0
73, Rik=A0 ON7YD - OR7T
=A0
Van: owner-rsgb_lf= _group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Ro= ger Lapthorn [rogerlapthorn@gmail.com]
Verzonden: dinsdag 26 oktober 2010 19:04
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: Simple, low cost, 8.970kHz stable source?

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 th= ought of an HF crystal divided down by 256 (from 2.296320MHz), but have yo= u tried to buy a "made to order" crystal lately?

73
Roger G3XBM
--
http://g3xbm-= qrp.blogspot.com/
http://www.g3xbm.co.u= k
http://www= .youtube.com/user/g3xbm
G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088



--
http://g3xbm-qrp.blogspot.com/<= br>http://www.g3xbm.c= o.uk
http://www= .youtube.com/user/g3xbm
G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088<= br> --001636c5ab5ddf080d0493891ad5--