Thanks, Don. I feared that might be the case – that once the amp and tuner are mated in the EC-2, using that tuner by itself for a different amp would require severing it from its mate. Then, to return to the “twins” configuration for the other K2, means doing all of that in reverse. A separate KAT100 sounds like the better choice by far.
OK; here we go. An order will go to Elecraft tomorrow. Incidentally, in case Ed Cole, KL7UW, is reading the mail, I have been cruising the inside passage for the past week, Sitka today and heading for Anchorage two days from now. Is it always incessant cold rain this time of year? Never mind sunspots; I have forgotten what the sun looks like. Otherwise, beautiful territory. Ted, KN1CBR On 7/26/16, 1:16 PM, "Don Wilhelm" <donw...@embarqmail.com> wrote: Ted, The answer is if you want to go to some bit of trouble, yes you can use the KAT100 in the EC2 enclosure. If you want to do it only once in a while, then you can, but if you think you will do it frequently, you will want another KAT100. You will have to electrically disconnect the KPA100 in the EC2. You can disconnect it by removing the right side panel and unplugging the ribbon cable, the power cable and the input coax. Disconnect the short PL-259 to PL259 coax from the KAT100 RF IN jack and connect a longer cable from your new K2/100 to this RF IN jack. You will have to power the KAT100 from the 2.1mm coaxial jack. You will need to have a control cable from the K2/100 AUX IO to the DE-9 connector on the KAT100. (if you are using this connector in your current configuration, plug it into the KPA100 - the one in the EC2 enclosure - AUX IO connector instead, it can stay there). You will need to build a 2nd control cable as shown in the KAT100 manual (it can have the cable to the computer too, but that is not required). If desired, put the right side panel back on the EC2 enclosure, although it will operate just fine with it off. When you are finished using the KAT100 with your new K2/100, restore the internal cables between the KPA100 and KAT100 and re-do your external cables. With the KPA100 on the base K2 enclosure, you will not need the KIO2 - in fact, there will be no place to put it. 73, Don W3FPR On 7/26/2016 1:57 PM, Dauer, Edward wrote: > I am just about to order my second K2 – principally for the experience of > building it, but also to have an additional configuration in the station. I > have a question about using a K2/100 with an existing KAT100 already in an > EC2 with another KPA100. > > Specifically: I already have a K2/10 with the internal low power tuner, the > KAT2. And I have a KPA100 with a KAT100 in an EC-2 enclosure. What I am > about to order will be a K2/100, i.e. another K2 with its own internal KPA100. > > There may be occasions when I will need an ATU for that soon-to-be K2/100. > The easiest option would be to build another KAT100 in the low-profile box. > But to lower the total cost I was thinking I might on those occasions use my > existing KAT100 in the EC-2. Can I do so? The problem is that the existing > KAT100 is wired into the existing KPA-100 within the EC-2. There is an 8 > connector ribbon cable, as I recall, conveying power and control data from > one to the other. That makes me wonder whether the KAT100 already tethered > to its KPA100 in the EC-2 could work with an outside KPA100 in the new > K2/100, without having to open the EC-2 and undo the control line connection > every time? > > A second question is whether, for the same purpose, I would need a KIO2 in > the soon-to-be K2/100, assuming I can use the EC-2’s ATU with it? The KPA100 > in the new K2/100 will have its own RS232. Will that be sufficient? > > Thanks for any insights anyone can offer. > > ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
