Go to the Elecraft web site (www.elecraft.com) and, under "Manuals and Downloads" get KPA100UPKT.PDF It'll show you exactly what changed.
As Wayne observed in an earlier post here, it's not needed if your KPA100 is working FB. Ron AC7AC -----Original Message----- What are the specific incremental upgrade changes to go from C to D? My amp is revision C so if I wanted to make only those changes, what needs to change to make it a D? The amp runs just fine as built 73 Elliott WA6TLA _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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