Stellant Systems has a storied and distinguished history of innovation and tough problem-solving, starting with Charles Litto ... n’s Engineering Laboratories in 1932, Varian Associates and the first RF amplifying vacuum tube in 1948, and Howard Hughes’ Microwave Tube Division in 1959. Today, Stellant Systems continues innovating and adapting these, and other, technologies to meet the ever increasing demand for power, frequency and efficiency. read more