Hello Curt: I have K2 S/N 1289 and added the KPA100 shortly after it became available. There were a few issues with a very small number of early KPA100s, but the design has been completely stable for many years now.
I'd hazard a guess that the vast majority of K2s out there are K2/100s, and there are a LOT of them, Hi! 73, Ron AC7AC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Curt Sent: Monday, September 10, 2012 9:42 AM To: [email protected] Subject: [Elecraft] K2/KPA100 Question I built K2 s/n 06424 with KSB2 awhile ago, and am considering adding a KPA100. Wonder whether this will just foul up a good radio. I recall reading about oscillation and other problems with the 100W addition to the K2. Now, I am using a 30 year old radio for QRO SSB, but of course it lacks WARC and takes up a lot of space I'd like to reclaim. Appreciate knowing whether the issues have been ironed out and any advice about making this change. In particular, I have talked on air with a friend who owns a K2/100 and his SSB signal on 40M is always weaker than any other rig he uses. Will the KSB2 need to be reconfigured after adding a KPA100? I'm mostly a CW op, but like to work phone sometimes also. Also, what else would I need to add to facilitate computer control and PSK31(which I only use rarely) using the K2/LPA100. My ultimate goal is a single small size rig and laptop on the desk, with everything else clear. Bottom line, is adding a 100W amp to what was originally a great QRP rig just asking for trouble? 72/73 Curt KB5JO ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

