Thanks guys! I am using a pot to vary the voltage divided to the zener so I can find a value that works. Some guys say that 12-24v is good bias, and some say that you have 41v bias??? I am using a 2n3055 to handle current and biasing the 3055 with the zener in a voltage divider. Oh well! I'll keep plugging away until I get it. Thanks guys Chuck AI4BB