Direct-reading centimetre wavemeters

This paper gives an account of the design and performance of wavemeters developed for Army use in the 3-, 6-, 10- and 25-cm wavebands. Each wavemeter consisted of a resonator, together with a tuning indicator and suitable connectors. The resonators, which are described in some detail, were designed to have scales reading directly in wavelength, with accuracies which varied between + 1 in 500 and ± 1 in 1 000. The 3-cm resonator was of the H11 cavity type, the other three being effectively ¿¿ coaxial lines using sliding contacts. An appendix is included, giving a brief description of a simple method for checking the calibration of the H11 resonator.