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Etymology. The word radio is derived from the Latin word radius, meaning "spoke of a wheel, beam of light, ray".It was first applied to communications in 1881 when, at the suggestion of French scientist Ernest Mercadier [], Alexander Graham Bell adopted radiophone (meaning "radiated sound") as an alternate name for his photophone optical transmission system.
FM meaning: 1. abbreviation for frequency modulation: a radio system for broadcasting that produces a very…. Learn more.
12 de mai. de 2015 · Radio Broadcast Data System: The Radio Broadcast Data System (RBDS) is the American equivalent of the Radio Data System (RDS) protocol, which is the standard protocol for the distribution and propagation of data by FM radio signals. The two standards (RDS and RBDS) are more or less the same. The main difference is in the classification of the ...
Graphical depiction of FM broadcasting allotments. The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. In Europe and Africa (defined as International Telecommunication Union (ITU) region 1) and in Australia and New Zealand ...
22 de ago. de 2020 · FM Radio - definition. The built-in FM radio tuner is now considered a basic feature. It allows the user to listen to most of the live-broadcasted FM radio stations. Almost all phones with FM ...
Radio FM. La radio FM, inventée en 1933 par Edwin Armstrong, est un procédé de radiodiffusion de programmes radiophoniques en modulation de fréquence (ou FM pour Frequency Modulation) dans la gamme des très hautes fréquences (VHF, Very High Frequency ). Elle est destinée à être reçue directement par le public et s'applique à la fois ...
FM ranges are much shorter than AM ranges, despite the high frequency, meaning that the FM radio is much better for local radio stations. When this technology was originally developed, there wasn’t a specific threat to AM radio because FM radio required people to purchase a different type of receiver. It wasn’t until after World War II that ...
