Scott, You will find this in the archives from 5/5/13, but ! am copying it below.
I do not have the website information, but I think I can describe it on words - it is not that difficult. If you are adding the KAT100 as well as the KPA100, order the KAT100-2 as well as the KPA100. (If you already have a KAT100-1, there is a conversion kit available from Elecraft - or at least used to be)
The KAT100-2 contains all the connectors for plugging in the KPA100 (except for the speaker cable), connect the base K2 RF (the ANT1 jack if the KAT2 is included) to the Aux RF IN jack on the KAT100 and connect the KAT100 control cable between the KIO2 option in the base K2 and the DB-9 jack on either the KAT100 or the KAT100. Don't forget that you still have to connect a coax from the KPA100 SO-239 jack to the KAT100 RF IN SO-239 - the coax can be short and left permanently in place.
If you do not wish to use the KAT100, it is just as easy. Drill a hole in the bottom of of the EC2 enclosure (right rear area) to mount a BNC connector. Solder an E620012 header to the back of the BNC jack to provide a connector to plug the KPA100 input coax into - you will have 2 of those parts with the KPA100 kit - they are normally used at K2 RF P3 and P6. Make certain the orientation is correct, the center conductor of the input coax must connect to the BNC jack center conductor.
Download the KAT100 manual from Elecraft and build the control cable that is shown in that manual.
Connect the base K2 RF output to the BNC jack on the EC2 enclosure and the control cable to the DB-9 connector on the KPA100. The connector with 2 cables must be plugged into the KIO2 if you use the connection to the computer.
Just one additional caution - do all the KPA100 alignment and calibration and checkout while connected directly to the base K2 (no QRP top cover), and check out the KAT100 using that same configuration. Once everything works in that configuration, move the KPA100 to the EC2 and put the QRP top cover on the K2 - connect the 2 cables between the K2 and EC2 and it should work OK.
73, Don W3FPR On 7/11/2013 2:04 PM, richardscott w wrote:
I was just contemplating ordering the components to do this project and tried to find the referenced KK7P site (http://www.kk7p.com/k2kpa100.html) but it seems to have "gone away". Did anyone save the instructions? -Scott N3SW-
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