Hi Gang, I have a new-to-me KAT100 I'm trying to get working. It is connected to the same PS as the K2/100. K2 PORT is ON. Known good PS cable. KAT100 appears dead, K2/100 ATU menu setting will not change. Control cable from previous owner who says it was working. What am I missing? Thanks and 73, Eric NF6S ex WD6DBM