A 150-600 GHz step-tunable gyrotron

Several discrete frequencies are generated by GYROTRON V at millimeter wavelengths by an operation at the base of electron cyclotron frequency. Frequency range can be extrapolated up to the submillimeter wavelength region by second harmonic operation. Designing of resonant cavity with small radius produces a reduction in the nearly strong fundamental force. GYROTRON V always functions at very low currents, and generates power over a wide range of frequencies.