The Model 1805B RF Control Unit is Tegam's legacy RF Control Unit. This solid state, microprocessor-controlled RF control unit is designed for precise control of dc substituted power. When used TEGAM Feedthrough Thermistor Mounts and a stable RF generator, a system is obtained which allows rapid and accurate calibration of power meter/sensors and other thermistor mounts from 100 KHz to 26.5 Hz.