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Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and
KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I have already built. Since I plan to put these options in, is there an optimal option build schedule? Will I have to undo work to put in these options? I don't like de-soldering! Any suggestions, ideas are welcome. BTW, I am an avid kit builder / home brew enthusiast. My most recently completed project is the N2PK VNA. Other than the XVs, I have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and Binaural receiver combination, and many other projects. Regards, Raj, N2RD -- Rajiv Dewan, N2RD [hidden email] FN13fc -- _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Raj,
Since you appear to be relatively skilled based on your list of successful projects, you could decipher the installation instructions for each of the options and as a minimum, install the headers and use jumpers pushed into the header pins instead of soldering the jumpers onto the K2 boards. I do it that way most of the time during construction. The KNB2 requires changing resistors on the RF board, but the K2 will work just fine if you install the resistor and jumper as instructed in the KNB2 manual (just don't do IP3 measurements without the 6dB pad in the KNB2 installed). C167 can be inserted into the KSB2 header, and C6 can be inserted into the K60XV 3 pin header. I recommend that you not install D19 and D20 nor change C71 to the 120 pf value until after you have completed the K2 without the K60XV option - that will leave you with one capacitor (C71) to desolder. One caveat - if you do not understand completely what to do and how to do this, then build it step by step as instructed in the manual. There is not really a lot of desoldering to be done when installing these options. Your other possible path is to buy the 'Rework Eliminators' and follow their instructions. 73, Don W3FPR > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]]On Behalf Of Rajiv Dewan, N2RD > Sent: Monday, June 26, 2006 4:17 PM > To: [hidden email] > Subject: [Elecraft] (no subject) > > > Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and > KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I > have already built. Since I plan to put these options in, is there > an optimal option build schedule? Will I have to undo work to put in > these options? I don't like de-soldering! > > Any suggestions, ideas are welcome. > > BTW, I am an avid kit builder / home brew enthusiast. My most > recently completed project is the N2PK VNA. Other than the XVs, I > have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and > Binaural receiver combination, and many other projects. > > Regards, > > Raj, N2RD > > > -- > Rajiv Dewan, N2RD > [hidden email] > FN13fc > > -- > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.394 / Virus Database: 268.9.4/375 - Release Date: 6/25/2006 > > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Great suggestions Don. I will do as you suggest: read the options'
literature and prepare myself for them while still preserving the incremental approach as far as possible. Headers and push on jumpers instead of wire jumpers are a sure bet. Thanks for the other suggestions. I am sure I will need the group's wisdom to tackle some problem before long. Thanks, Raj Don Wilhelm wrote: >Raj, > >Since you appear to be relatively skilled based on your list of successful >projects, you could decipher the installation instructions for each of the >options and as a minimum, install the headers and use jumpers pushed into >the header pins instead of soldering the jumpers onto the K2 boards. I do >it that way most of the time during construction. The KNB2 requires >changing resistors on the RF board, but the K2 will work just fine if you >install the resistor and jumper as instructed in the KNB2 manual (just don't >do IP3 measurements without the 6dB pad in the KNB2 installed). C167 can be >inserted into the KSB2 header, and C6 can be inserted into the K60XV 3 pin >header. I recommend that you not install D19 and D20 nor change C71 to the >120 pf value until after you have completed the K2 without the K60XV >option - that will leave you with one capacitor (C71) to desolder. > >One caveat - if you do not understand completely what to do and how to do >this, then build it step by step as instructed in the manual. There is not >really a lot of desoldering to be done when installing these options. > >Your other possible path is to buy the 'Rework Eliminators' and follow their >instructions. > >73, >Don W3FPR > > > > >>-----Original Message----- >>From: [hidden email] >>[mailto:[hidden email]]On Behalf Of Rajiv Dewan, N2RD >>Sent: Monday, June 26, 2006 4:17 PM >>To: [hidden email] >>Subject: [Elecraft] (no subject) >> >> >>Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and >>KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I >>have already built. Since I plan to put these options in, is there >>an optimal option build schedule? Will I have to undo work to put in >>these options? I don't like de-soldering! >> >>Any suggestions, ideas are welcome. >> >>BTW, I am an avid kit builder / home brew enthusiast. My most >>recently completed project is the N2PK VNA. Other than the XVs, I >>have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and >>Binaural receiver combination, and many other projects. >> >>Regards, >> >>Raj, N2RD >> >> >>-- >>Rajiv Dewan, N2RD >>[hidden email] >>FN13fc >> >>-- >> >>_______________________________________________ >>Elecraft mailing list >>Post to: [hidden email] >>You must be a subscriber to post to the list. >>Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >>Help: http://mailman.qth.net/subscribers.htm >>Elecraft web page: http://www.elecraft.com >> >> >>-- >>No virus found in this incoming message. >>Checked by AVG Free Edition. >>Version: 7.1.394 / Virus Database: 268.9.4/375 - Release Date: 6/25/2006 >> >> >> >> > > > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Rajiv Dewan, N2RD
Great note Mark. I am looking forward to the project. I will check out
the rework eliminators. I think that an incremental approach is the best and will follow your advice about building the basic K2 and testing it first. The XVs are all Elecraft ones. I ordered the XV432 right after coming back from Dayton. They had them in Dayton but I saw no reason to contribute to the OH treasury. When I got that built, I decided to go the K2 route. I like the idea of automating the whole thing right from the K2 front panel and so I opted for and bullt the XV50 even though I have a very nice SSB tranverter for that band. So now I have a stack of 4 XVs, just waiting for the K2 to be ready! The KK7B binaural receiver is neat. I had built that a while ago but never really played with it much. Last year I built the IQ-PRO DDS symthesizer that puts out two RF signals in quadrature. Used that to feed the binaural receiver. I put that near my bed so that I listen to the HF bands as I fall asleep. The binaural receiver is neat. Definitely recommeded. Thanks again for your note, All the best, Raj, N2RD Mark Schreiner wrote: > Hi Raj, > > Sounds like you have a fun project coming up. I built my K2 with all > those options as well as the KAT2 about just over one year ago. We > used it for Field Day both last year and this year and worked great, > as well as some amazing DXing on the lowbands during last winter. > As far as the options go I'm not sure if you also got the rework > eliminators, which some folk have been using to more easily do the > upgrades later (as well as unplugging the options without having to > solder/resolder/unsolder a few caps and resistors). You might > consider those. I recall that there was some disassembly of the main > RF board to install the K160RX and/or K60XV, while all other options > were fairly "painless" to install otherwise. I would recommend > getting the basic K2 built and tested first before going forward too > far with the other options. Test it out on the air to make sure > things all seem okay before proceeding further. Then, install one > option at a time and test it out again to make sure that both the rig > and the option works as it should. The "testing" period should slow > down the building process because once they are all built that is it > until you build something else, so enjoy it while you can! I loved > building mine, along with all the options, but now that it is done > (and I'm out of dollars for a while) all I can do is operate, which is > fine as well. > Did you get the Elecraft XVs or do you have Down East Microwave or > some other XVs? All of my DEM XVs have been in storage for over 5 to > 6 years now since I moved but I'm starting to get the "itch" to pull > them out to interface them with the K2 for a portable/rover VHF/UHF > setup. I just built the 4-bay 432 MHz loop as shown in July QST and > plan to build a 2-bay loop for 220 MHz and another for 2m, all with > male threads on the top of the 5' section of 3/4" pipe and female > threads on the bottom so that they can be screwed into each other > depending on if I want to use all, one or only two select antennas > (and to make them shorter for transporting). I still have to build > the 4-way splitter/combiner yet for 432 as well. I know of another > ham that uses the DEM XVTRs with a K2 and he said it has been working > well for him. I hope to find out in time for the August UHF contest! > > Oh, I have questions for you also about the IQ-VFO and the Binaural > Rx. I have the IQ-VFO built and working but still need to finish it > off into a nice project box. I had planned to use it with an R2/T2 > combination, but am also interested in trying it with a binaural Rx. > How do you like the Binaural Rx? BTW, KK7B, Rick Campbell, was my > favorite professor when I was studying for my BSEE at Michigan > Technological University back in the late '80s. > > 73, > > Mark, NK8Q > K2 4786 > Allentown, PA (FN20) > > Rajiv Dewan, N2RD wrote: > >> Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and >> KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I >> have already built. Since I plan to put these options in, is there >> an optimal option build schedule? Will I have to undo work to put in >> these options? I don't like de-soldering! >> >> Any suggestions, ideas are welcome. >> >> BTW, I am an avid kit builder / home brew enthusiast. My most >> recently completed project is the N2PK VNA. Other than the XVs, I >> have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and >> Binaural receiver combination, and many other projects. >> >> Regards, >> >> Raj, N2RD >> >> >> -- >> Rajiv Dewan, N2RD >> [hidden email] >> FN13fc >> >> -- >> >> _______________________________________________ >> Elecraft mailing list >> Post to: [hidden email] >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft Help: >> http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com >> > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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