The 100-KW ERP Sutton Coldfield Television Broadcasting Station

This paper describes the planning, design, construction, and service performance of the 100-kw ERP Sutton Cold-field television broadcasting station built by the British Broadcasting Corporation as the first of the group of four new high-power stations required by the plan to extend the London television service to provide national coverage for the United Kingdom. It represents the basic general arrangement which has been used at the subsequent stations, although at each of these, some variations have been desirable because of differences and improvements in the type of transmitter and combining equipment. The relation of the operating channel of Sutton Coldfield to the over-all frequency-allocation plan for the 41-to 68-mc band used for television broadcasting in the United Kingdom, and the reasons for adopting a vestigial sideband characteristic for the vision signal, are briefly discussed. The construction details of the complete vision and sound transmitting equipment, transmission lines, combining diplexer, mast and antenna system are described, and information about the performance of the station in service is given.