The testing was limited to 90W due to limitations of the prototype PA100 used. Please follow the link for futher details on the test setup and procedure. I believe it is explained there. Pete WK8S -- View this message in context: http://elecraft.365791.n2.nabble.com/JUMA-PA100-IMD-tp7561344p7561351.html Sent from the Elecraft mailing list archive at Nabble.com.