The Marconi-E.M.I. audio-frequency equipment at the London television station

The paper outlines the requirements of a high-quality sound equipment as supplied to the British Broadcasting Corporation for use in the London Television Station. Design features necessary to meet these requirements are indicated and a general description is given of the complete equipment. The final section of the paper gives information on the overall performance of the apparatus and includes data on the frequency and harmonic distortion of the amplifier equipment.