Send Jerry a note - QRZ email is good. I think it will take the power and keep the isolation. Jerry is a retired engineer and a good designer. 73 Dan ----- Dan AB3EN -- View this message in context: http://elecraft.365791.n2.nabble.com/Another-KPA500-question-tp7134629p7146416.html Sent from the Elecraft mailing list archive at Nabble.com.