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[77.248.65.57]) by mx.google.com with ESMTPS id 44sm137829606eek.0.2013.01.08.13.52.04 (version=SSLv3 cipher=OTHER); Tue, 08 Jan 2013 13:52:04 -0800 (PST) Message-ID: <2ACEBB801F37473D99B5E5E58DF7C116@PcMinto> From: Minto Witteveen 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> <11F3B6DF909A4F5D87F375ECE2E35EF8@AGB> In-Reply-To: <11F3B6DF909A4F5D87F375ECE2E35EF8@AGB> Date: Tue, 8 Jan 2013 22:51:58 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 X-Spam-Score: 1.4 (+) 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: Ah now I see where the confusion comes from. The page you’re referring to contains an on-line calculator for the DDS (Device Configuration Assistant). Here you can – for instance – calculate the frequency and phase control words to get the DDS to output the desired frequency. The calculator also displays the actual frequency, spurious ouputs etc. It is _not_ an application to ‘program’ the DDS itself. You still need to connect the DDS to the PC, either using 8 bits parallel or 3 bits serial (both are supported by the DDS) and then transmit the calculated control words to the DDS. You CAN use the parallel port + an applicable program like the one in the link I sent earlier. I’d go for the PIC version. Take a good look at Andy’s solution. It won’t get easier than this. [...] Content analysis details: (1.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.215.169 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (minto.witteveen[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 2.1 AXB_XMAILER_MIMEOLE_OL_B054A AXB_XMAILER_MIMEOLE_OL_B054A 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 07fee8d4a4e8ea80934a0e0aaa44e788 Subject: 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-SCOLL-AUTHENTICATION: mtain-df02.r1000.mx.aol.com ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d40d650ec95526992 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Ah now I see where the confusion comes from. The page you’re referring to contains an on-line calculator for the DDS (Device Configuration Assistant). Here you can – for instance – calculate the frequency and phase control words to get the DDS to output the desired frequency. The calculator also displays the actual frequency, spurious ouputs etc. It is _not_ an application to ‘program’ the DDS itself. You still need to connect the DDS to the PC, either using 8 bits parallel or 3 bits serial (both are supported by the DDS) and then transmit the calculated control words to the DDS. You CAN use the parallel port + an applicable program like the one in the link I sent earlier. I’d go for the PIC version. Take a good look at Andy’s solution. It won’t get easier than this. Regards, Minto -------------------------------------------------------------------------- Ceterum censeo Carthaginem delendam esse -----Original Message----- From: Graham Sent: Tuesday, January 08, 2013 22:31 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Re: 475kHz crystal 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 >>> >>> >>> >>> >>> >> > >