Don, Thanks for the heads-up. I am just now building the KIO2 and getting ready to start the KAT100-2 next. Maybe I will try the tuner with the QRP rig first to make sure everything is working, then remote the KPA100 with the tuner.
I have an old RF choke core assortment somewhere. I will see if I can't find something in there that I can use. 73, Tom KG3V Quoting Don Wilhelm <[EMAIL PROTECTED]>: > Tom and all, > > If you remote both the KPA100 and the KAT100 -- > > In addition to the 'instructions' below, you may have to change L1 on > the KIO2 AUX2 board (the one that plugs onto the control board) with a > higher current choke. > > With both the KPA100 and the KAT100 drawing current from the 12CTRL > line, the sub-miniature choke does not have enough current capacity. > Either the KPA100 or the KAT100 alone will be OK with the stock choke, > but both together may cause the smoke to be released from the choke. > > A small ferrite toroid core with 10 to 12 turns on it is a good solution > - the inductance is not critical. An FT23-43 like that used for the RF > Chokes on the KSB2 board with 12 turns fits nicely. > > 73, > Don w3FPR > > Don Wilhelm wrote: > > Tom, > > > > I don't believe there are any explicit instructions - BUT - > > If you assemble the KAT100-2 and put it into an EC2 enclosure, the > > mating of the KPA100 should be fairly obvious. There is a header on the > > KAT100-2 board to accept the ribbon cable from the KPA100, a 2 pin > > header for the RF input connector and another 2 pin header for the DC > > power. (BTW, Elecraft offers a kit to change the KAT100-1 to a KAT100-2 > > which includes the required headers). > > > > For the external connections, you need only 3 - 1) DC power to the > > KPA100 (the KAT100 receives its power from the internal cable from the > > KPA100. 2) The control cable is just like that one shown in the manual > > for the KAT100, and plugs in just like the normal KAT100 cable (that is > > where the KIO2 is required in the QRP K2). 3) Use a short piece of coax > > with BNC connectors between the QRP K2 (either the ANT OUT jack or with > > the KAT2 installed, the ANT1 jack from the KAT2). The other end of the > > coax connects to the AUX RF input jack on the KAT100 rear panel. > > > > That is all there is to it - set the menus just the same as if the > > KPA100 was installed internally. > > > > If the KPA100 is installed in the EC2 enclosure without the KAT100, the > > situation is only a little different - one must install a BNC input jack > > on the EC2 back panel and connect the KPA100 input coax to it (order the > > mating header from Elecraft and solder it to the back of the BNC > > connector for the easiest installation). The control cable (just like > > the one used with the KAT100) plugs between the KIO2 and the KPA100 AUX > > I/O, and of course DC to the KPA100 rear panel power jack. That is it, > > not really difficult at all. > > > > 73, > > Don W3FPR > > > > Tom Zeltwanger wrote: > >> Don, > >> > >> I now have all the pieces to do this (remote the KPA100 and KAT100-2). > >> I have seen many discussions on this subject, and I know there are > >> directions out there for doing this. Is there any one set of > >> directions that is best in terms of describing all the steps? I don't > >> necessarily need photos, but I need something that covers everything > >> that needs to be done. > >> > >> 73, > >> > >> Tom KG3V > >> > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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: [email protected] 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
