forgot the rf amplifier that has the semiconductor grounded to case and heatsink, i built this one from scratch using mrf455s.
Never had a failure, and pumps out great rf power with switchable filters for each band.I built this for some of my QRP gear. for the ten tec argonaut 509, hw-8 and a few other transceivers i stll own.
Anyway May the SBITX live forever!!!!!! A beautiful design.
73
David
ac9xh
