Radiolympia, also known as the Radio Show, was a pioneering exhibition of radio equipment, latterly television equipment, held annually at Olympia in London, England, in the 1920s to 1940s, except for a period of interruption during World War II. The first such exhibition was held in 1926. On 26 August 1936, the first high-definition standard (Baird 240 lines) television transmission was made in a test by the BBC to the exhibition from the BBC's studios in Alexandra Palace. The day after, the Marconi-EMI (405 lines) system was used. The record attendance was 238,000 in 1934.
References
External links 1947 exhibition opening on YouTube


