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Radio Equipment, Aerials Radio aerials sited on the roof of the Science Museum, London, 1980s

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UIS5064573

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Radio Equipment, Aerials Radio aerials sited on the roof of the Science Museum, London, 1980s

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Radio Equipment, Aerials Radio aerials sited on the roof of the Science Museum, London, 1980s. In order to be transmitted, the information in a radio signal is used to modulate a radio-frequency wave. The modulated signal is then amplified, and projected into space by a transmitting antenna. The signals can then be picked up by the aerial of a radio receiver tuned in to the wavelength of the transmission. The first radio signals were successfully sent by Guglielmo Marconi (1874-1937) in 1894. Marconi devised a means of sending telegraphic messages, but it was not until 1906 that Reginald Fessenden (1866-1932) developed amplitude modulation, enabling him to make the first sound broadcast. This marked the birth of radio broadcasting as we know it today. ©SSPL/Science Museum

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Largest available format 3504 × 2803 px 2 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 3504 × 2803 px 297 × 237 mm 1.7 MB
Medium 1024 × 819 px 87 × 69 mm 1.1 MB

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