Hello Bill, I still carry the view that the rework eliminator is not necessary. Elecraft's instruction in how to upgrade earlier K2 is well written: http://www.elecraft.com/order_form_parts.htm#K2 Parts If you have any problems, please send your email to supp...@elecraft.com Your questions will be well handled by elecraft.
TNX & 73, Johnny VR2XMC ________________________________ 寄件人︰ Bill Tubbs <cgpi...@yahoo.com> 收件人︰ "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> 傳送日期︰ 2012年09月15日 (週六) 1:21 PM 主題︰ Re: [Elecraft] Getting ready to order a K2 - which options This thread is the first I've heard of this rework eliminator. It sounds interesting but I can't imagine that working on K2 upgrades is that daunting, is it? Granted, I didn't build my used K2 but all I've heard is that the process is very straightforward with Elecraft's excellent instructions. I'm about to upgrade my early model to the latest version myself, and was going to just plow through the stages one by one (I already have all the upgrade parts). Would there be any advantage to this rework eliminator at this stage or is that designed for upgrades "to be done at a later date"? Bill WK6A Sent from my iPhone On Sep 14, 2012, at 6:24 PM, Johnny Siu <vr2...@yahoo.com.hk> wrote: > Completely on the contrary, I always don't feel the "Rework Eliminiator" is > necessary. Installation or rework of most of the K2 options is NO more > difficult than the K2 itself's construction. Taking KSB2 or , KAF2 and KNB2 > as examples, after you take out option, you could easily revert to basic K2 > by adding a few jumpers or one / two components. > > In the construction of over ten K2 in the past, I never felt the need of the > rework eliminiator. Currently, I am working on turning an early version K2 > into latest version. > > TNX & 73, > > > Johnny VR2XMC > > > ________________________________ > 寄件人︰ Don Wilhelm <w3...@embarqmail.com> > 收件人︰ elecraft@mailman.qth.net > 傳送日期︰ 2012年09月15日 (週六) 1:48 AM > 主題︰ Re: [Elecraft] Getting ready to order a K2 - which options > > If you do use the "Rework Eliminators" (or often called "unPCBs") I > recommend you do *NOT* install the one for the K60XV - wait until you > actually have the K60XV option in hand. > > Why you may ask - well, the change of the C71 value modifies the PLL > voltage range drastically. With the K60XV installed, the lowest voltage > which must be adjusted for occurs at 5300 kHz, and if one does not have > the K60XV in place, the K2 will not tune to the 60 meter band - so you > have to guess about the low voltage point, and remember to revisit it > when you do put the K60XV option in. > > It might be OK to install the headers, add the coax on the bottom of the > board and install D19 and D20, but do not change C71 until it is time to > install the K60XV. > > I just worked on a K2 that was sent in for repair because the owner did > not know to turn the D19 menu parameter to "y" - the rework eliminators > had been installed and he did not know that either (he had just bought > the K2). So he endured the cost of repair and shipping just because of > a simple menu entry - don' change C71 until you have the K60XV in hand. > > 73, > Don W3FPR > > > On 9/14/2012 12:30 PM, Wayne Conrad wrote: >> On 09/14/12 02:19, Fred Smith wrote: >>> One thing I would suggest "strongly" is to consult with Don and ask him to >>> advise you of the options and the order of installation as some can be done >>> during the build. Otherwise you will disassemble much of the radio to >>> install some of the options. On the other hand some are easily done after >>> the build is completed at any time. JMHO >> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers: >> >> http://www.eham.net/reviews/detail/6372 >> >> They work very well. You build the option bypass headers, and then when >> you build your K2, you build it as though you are installing every >> option. Many options require that you remove a component or two from >> the main board, so you just don't install those components at all during >> the build. For the options you don't actually install, plug in the >> option bypass header. Later, when you add an option, simply unplug the >> bypass header and plug in the option. >> >> 73, Wayne Conrad KF7QGA >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net/ >> Please help support this email list: http://www.qsl.net/donate.html >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
