High-power pulse communication at centimetre wavelengths

The paper describes several applications of microwave radar technique to pulse telephony for a single channel. Two methods of modulation were used, one of which has the advantage of reducing interference by a gating system with automatic synchronization. Pulsed magnetrons and klystrons were used, giving an output peak power of ¿ kW and higher. Some measurements were made of the signal/noise ratio, and reasonable agreement was obtained between theory and measurement. Suggestions are made for improved discrimination between channels.