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 7F2D0380000BE; Tue, 8 Jan 2013 16:32:32 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TsglZ-0002i6-IK for rs_out_1@blacksheep.org; Tue, 08 Jan 2013 21:31:25 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TsglY-0002hx-UM for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 21:31:24 +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 1TsglW-0003OJ-6K for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 21:31:23 +0000 Received: from AGB ([2.26.16.164]) by mwinf5d22 with ME id lZX11k00F3YP8Wy03ZX1Fs; Tue, 08 Jan 2013 22:31:01 +0100 Message-ID: <11F3B6DF909A4F5D87F375ECE2E35EF8@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> <533F9BD29DAB45C49C86D2F1BFF53425@AGB> <2322587AEF8F416AA2B128FE6951D1EC@PcMinto> In-Reply-To: <2322587AEF8F416AA2B128FE6951D1EC@PcMinto> Date: Tue, 8 Jan 2013 21:31:01 -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. 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Content preview: Ok Minto This implies it can address the via the serial link , if so , then its a way in ? 73 -G, [...] 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: b42857a5fad6e32377447282c21f62b1 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: 3039ac1dc14a50ec9070744b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Ok Minto This implies it can address the via the serial link , if so , then its a way in ? 73 -G, http://designtools.analog.com/dt/dds/ad9850.html -------------------------------------------------- From: "Minto Witteveen" Sent: Tuesday, January 08, 2013 9:23 PM To: Subject: LF: Re: 475kHz crystal > Graham, > Did you find a website of the mfg of this specific board? I can’t find it, > although there is plenty of info on the Internet for this specific board > (pin layout, programming specs). And of course 9850 datasheets on the > website of Analog Devices, the mfg of the DDS chip itself. > Can you point me to the website with the pc based support software, I will > look into it to see what it can do. But whatever the software can do, you > still need to interface the SPI, and a ‘standard’ PC has only the > parallel interface that can be used.. > > Minto pa3bca > > > > > -------------------------------------------------------------------------- > Ceterum censeo Carthaginem delendam esse > -----Original Message----- > From: Graham > Sent: Tuesday, January 08, 2013 22:06 > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: Re: 475kHz crystal > > 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 >>> >>> >>> >>> >>> >> > >