These were DC measurements on the bs170. I need to read about the RF probe, from the reference you sent me and then build or borrow one to make the measurements you are suggesting.? Also, it was suggested that maybe I burned out the BS170, when the low pass relay board was in the circuit and caused a short between the RF out and ground? (now it out of the circuit)... but if I have these DC measurements now, it means that BS170 is still good. Yes? Thanks again, for your time... we will solve the problem... (that's the spirit). I'll work on the problem during the week... in and around my volunteer work. 73 Howard 4x1zz