Profile: Applied Systems Engineering, Inc. is engaged in the development and production of microwave amplifiers & transmitters. Our products list comprises of magnetron transmitters, klystron amplifiers, dual mode TWT amplifiers, cavity oscillator transmitters, and cross field amplifiers. Our model 117 pulse traveling wave tube amplifiers have a frequency range of 2-18 GHz, 1.5% duty cycle, and a pulse width of 0.07 to 15 microseconds. The model 277 pulse traveling wave tube amplifiers have a frequency range of 18-26.5 GHz, and duty cycle up to 50% pulse width.