Before revision: Soft Sutton tube One of the advantages of using microwaves for radar is that the size of an antenna is based on the wavelength of the signal, and shorter wavelengths thus require much smaller antennas.
After revision: Replicas of World War II allied (left) and German T/R switch tubesSoft Sutton tube One of the advantages of using microwaves for radar is that the size of an antenna is based on the wavelength of the signal, and shorter wavelengths thus require much smaller antennas.