The Sutton Coldfield television broadcasting station

The paper describes the design, construction and service performance of the Sutton Coldfield television station built by the British Broad-casting Corporation as a first step in the extension of its television service to the provinces. The relation of the operating channel of Sutton Coldfield to the overall frequency-allocation plan for the 41¿68-Mc/s band used for television broadcasting in the United Kingdom and the reasons for adopting a vestigial-sideband characteristic for the vision transmission are briefly discussed. The complete vision and sound transmitting equipment is described and its performance characteristics are stated. The considerations governing the design of the aerial-mast system, the vision-and-sound-combining diplexer and the transmission lines are also discussed, and details are given of the construction used and the performance obtained.