A 10-cm mechanically swept spectrometer

The paper describes an instrument which was developed for monitoring continuously the spectrum of a 10-cm naval radar transmitter. The unit consists of a hybrid H011 coaxial mode cavity, which can be mechanically tuned over a ± 8 Mc/s frequency range at any predetermined point in the 10-cm band. The spectrum so obtained is displayed on a cathode-ray tube. The accuracy of frequency measurement with the components used is about ± ¿ Mc/s. The paper describes apparatus which would not necessarily be used in future equipments.