Development of high power medium-wave radio transmitter with SIT

The authors present a new type of 20 to 100 kW radio transmitter using high-frequency power SITs (static induction transistor). This new version employs power SITS in its RF power amplifiers and modulators. High-frequency power SITs with 600 V sustaining voltage, 0.6 Omega on-resistance, and 400 W allowable loss have been designed and fabricated. The development of SIT-equipped transmitters is described.<>