Abstract :
A study of microwave spark generators shows that they have certain useful characteristics. In particular, the wide band of frequencies generated permits the use of filters to select any desired band of any width. Both post and iris type of filters were used. The measurements of wavelength and bandwidth were carried out with the help of a Boltzmann interferometer using a cathode-ray oscilloscope and a camera for recording purposes. Very satisfactory results were obtained in the 2 to 4 cm region and less so down to 8 mm.
