I purchased a used K2 (S.N. 01215) with a KIO2 rev. B. This K2 also had the Revision B K2ATOBKT installed. What is the difference between the KIO2 Rev. B and Rev C, and should I consider upgrading this to Rev. C? ----- Thanks Bj WA7WJR XV9WJR -- Sent from: http://elecraft.365791.n2.nabble.com/