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Radio frequency energy in radar is transmitted in short pulses with time durations that may very from 1 to 50 microseconds or more. In order to generate this short pulse of high power, a special modul... Radio frequency energy in radar is transmitted in short pulses with time durations that may very from 1 to 50 microseconds or more. In order to generate this short pulse of high power, a special modulator is required which generates a high voltage for the transmitter tube at the moment of transmission.