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London Television Station

    Naturevolume 135page987 (1935) | Download Citation



    THE Postmaster-General announces that the Television Advisory Committee has recommended the adoption of the Alexandra Palace for the London Television Station. This recommendation has been approved by the Postmaster-General; and the British Broadcasting Corporation has made arrangements with the Alexandra Palace trustees for the use of a portion of the buildings for the station. The ground at the Alexandra Palace is 306 ft. above sea-level; and it is proposed to erect a 300 ft. mast on the site, thus providing an aerial height of 606 ft. above sea-level which, it is considered, should enable a high definition television service to be provided for the London area. The Baird Television Company and the Marconi-E.M.I. Television Company are being invited to tender for the supply of the necessary apparatus for the operation of their respective systems at the station. The Baird Company proposes the adoption of a standard of picture definition of 240 lines sequential scanning, 25 picture traversals a second, 25 complete frames a second; and the Marconi-E.M.I. Company propose a standard of 405 lines, 25 pictures a second, interlaced to give 50 frames a second, each of 202£ lines. The Committee proposes that the vision signals shall be radiated on a wave-length of about 6-6 metres and the associated sound signals on a wave-length of about 7·2 metres.

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