Parabolic antenna be exploited. Italian radio pioneer Guglielmo Marconi used a parabolic reflector during the 1930s in investigations of UHF transmission from his boat in the Mediterranean. In 1931 a 1.7 GHz microwave relay telephone link across the English Channel using 10 ft. (3 meter) diameter dishes was demonstrated. The first large parabolic antenna, a 9 m dish, was built in 1937 by pioneering radio astronomer Grote Reber in his backyard, and the sky survey he did with it was one of the events that founded the field of radio astronomy. The development of radar during World War II provided a great
Egyptian Radio Egyptian Radio Egyptian Radio also known as the Egyptian Radio's General Program (إذاعة البرنامج العام transliterated as Iza'at El-Bernameg Al-Aam) also popularly known as Radio Cairo (in Arabic إذاعة القاهرة transliterated as Iza'at al Qaahira) is the pioneering Egyptian radio station that started broadcasting on 31 May 1934 in agreement with the Marconi Company. The General Manager of the station for the period was Said Basha Lotfi who presided over the station from May 1934 to December 1947. In December 1947, the contract with Marconi was suspended in favour of an Egyptian national broadcasting station. The General Manager was replaced