If your not using the KPAK3AUX cable kit, are you sure the key line is connected? Jack WA9FVP ----- Jack WA9FVP Sent from my TRS-80 :-) -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-tp7594350p7594501.html Sent from the Elecraft mailing list archive at Nabble.com.