Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5F40238000096; Tue, 8 Jan 2013 16:07:48 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TsgNz-000201-Ua for rs_out_1@blacksheep.org; Tue, 08 Jan 2013 21:07:03 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TsgNz-0001zl-2k for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 21:07:03 +0000 Received: from smtpout2.wanadoo.co.uk ([80.12.242.42] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TsgNv-00039F-SF for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 21:07:01 +0000 Received: from AGB ([2.26.16.164]) by mwinf5d22 with ME id lZ6f1k0023YP8Wy03Z6fcX; Tue, 08 Jan 2013 22:06:39 +0100 Message-ID: <533F9BD29DAB45C49C86D2F1BFF53425@AGB> From: "Graham" To: References: <1357561166.96226.YahooMailNeo@web133202.mail.ir2.yahoo.com> <1357566320.97293.YahooMailNeo@web133202.mail.ir2.yahoo.com> <1357567457.74036.YahooMailNeo@web133201.mail.ir2.yahoo.com> <1357606435.22427.YahooMailNeo@web133202.mail.ir2.yahoo.com> <1357639491.23767.YahooMailNeo@web133206.mail.ir2.yahoo.com> <90680D974ED44B74BA3A69AD3D1D74B5@KlausPC> <7DF58DAAC3444D83B9955324AACF6132@PcMinto> <5FB5E7A5A752436C942BD62A4A66E239@AGB> <5DB499C4565845A1898DE96BD73FDB73@PcMinto> In-Reply-To: <5DB499C4565845A1898DE96BD73FDB73@PcMinto> Date: Tue, 8 Jan 2013 21:06:38 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 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: From the mfg web-site , seems to be pc based support software ? could not this be used to run the 'dds demonstration kit' directly ? From: "Minto Witteveen" Sent: Tuesday, January 08, 2013 8:42 PM To: Subject: LF: Re: 475kHz crystal [...] 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 [80.12.242.42 listed in list.dnswl.org] X-Scan-Signature: f3d1da032404cd5ad9531631c09e3b44 Subject: Re: LF: Re: 475kHz crystal Content-Type: text/plain; format=flowed; charset="UTF-8"; reply-type=response 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=0.1 required=5.0 tests=MISSING_OUTLOOK_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: 3039ac1dc14a50ec8aa413bc X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none >From the mfg web-site , seems to be pc based support software ? could not this be used to run the 'dds demonstration kit' directly ? -------------------------------------------------- From: "Minto Witteveen" Sent: Tuesday, January 08, 2013 8:42 PM To: Subject: LF: Re: 475kHz crystal > Hi Graham, > > It is possible to use the parallel port of a PC to control the DDS, the > DDS has a 3-wire SPI interface. See for instance: > http://www.qsl.net/p/pa3ckr//signalgenerator/ . Here you will find > (amongst a lot of other info) a VB program to control the DDS > (http://www.qsl.net/p/pa3ckr//signalgenerator/prad9850.zip). But be > prepared to re-install W95 or possibly DOS because it will not work with > newer versions of windows…. > > Using a PIC is the easiest method I think. Andy already beat me to it, > see his earlier reply to my mail. If you do not want to make a PCB you can > even build it using a prototyping breadboard. > > Minto pa3bca > > > > > -------------------------------------------------------------------------- > Ceterum censeo Carthaginem delendam esse > -----Original Message----- > From: Graham > Sent: Tuesday, January 08, 2013 21:16 > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: Re: 475kHz crystal > > Minto > > Is it possible to communicate with the DDS from the PC for a simple > VFO or need the pic ? > > G. > > -------------------------------------------------- > From: "Minto Witteveen" > Sent: Tuesday, January 08, 2013 6:46 PM > To: ; > Subject: LF: Re: 475kHz crystal > >> Or, as long as you are going to use a PIC anyway, order a AD9850 DDS >> module from buyincoins.com. This 0-40MHz DDS costs less than $5 >> (including shipping). Add a cheap PIC, a $5 2x16 LCD and a rotary encoder >> (or use your PC to communicate with the PIC) and you can generate any >> frequency you want. And use the PIC to generate Opera, wspr, qrss. >> My next project. I already have all the components…. >> >> Minto pa3bca. >> >> >> >> >> -------------------------------------------------------------------------- >> Ceterum censeo Carthaginem delendam esse >> -----Original Message----- >> From: Klaus Hirschelmann >> Sent: Tuesday, January 08, 2013 12:00 >> To: rsgb_lf_group@blacksheep.org >> Subject: Re: Fw: LF: 475kHz crystal >> >> Hi Pete and group >> >>>> maybe we can bring http://www.hanssummers.com/ for also offering >>>> 630m-Band versions of his QRSS and WSPR kits. >> >>> He doesn't seem to have taken MF on board as far as I can see. May one >>> of his rigs can be modified I have not checked my self. >> He does mention the use of Si570 programable xtal. I have one on a board >> with set frequencies from a PIC and selected by binary from a dil switch. >> They will not operate as low as 500kc/s so they have to be divided with >> either a CD4040 or CD4060 or any other logic divider. However it gives >> stable selectable xtal frequencies. In this case it is probably worth >> going >> the extra mile and make up a DSS as the master oscillator which will give >> VFO coverage. I think your pays your money and takes you choice as they >> say....... hee. >> >> What i intend to do, is building a relatively simple Stand-Alone WSPR >> beacon >> for 630m-Band. Using a Si570 with additional divider seemed to be quite >> an >> expensive solution. So i did order 7611.2 KHz crystal ( there is a >> company >> manucturing crystals according to given frequency ). By using a HCF4060B >> oscillator/divider this should give a stable signal around WSPR midden >> frequency 475.7 KHz. WSPR signal generation is planned according to >> http://www.knology.net/~gmarcus/WSPR/WWVB_WSPR%20VCXO%20Contoller.pdf >> where >> ( for use in Europe ) i intend to use DCF77 time signals instead of WWVB. >> Suitable PIC program version is made by PE1NWL and available via >> http://www.knology.net/~gmarcus/ , while DCF77 receiver module is >> obtainable >> from Conrad Electronics. >> Because of later signal division by 16, this conception will require a >> multiplication of crystal FSK deviation by same factor. For WSPR this >> should >> result in values around 23.43 Hz which ( i hope ) will not cause any >> problem. >> So far my plans in the moment, but of course it would be much easier, in >> case somebody would offer a kit already doing all i like. >> .. >> Klaus, DJ7OO >> >> >> >> >> >