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Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high-fidelity sound over broadcast radio. FM broadcasting offers higher fidelity—more accurate reproduction of the original program sound—than other broadcasting techniques, such as AM broadcasting.
- History of radio
In 1933, FM radio was patented by inventor Edwin H....
- Timeline of radio
1933: FM radio was patented; Edwin H. Armstrong invented it....
- History of radio
In 1933, FM radio was patented by inventor Edwin H. Armstrong. [74] FM uses frequency modulation of the radio wave to reduce static and interference from electrical equipment and the atmosphere.
1933: FM radio was patented; Edwin H. Armstrong invented it. FM uses frequency modulation of the radio wave to minimize static and interference from electrical equipment and the atmosphere, in the audio program.
Radio służyło początkowo do przekazywania znaków alfabetu Morse’a, a następnie dźwięku. W roku 1993 rozpoczęło działalność pierwsze radio internetowe. Obecnie ponad 20 tysięcy stacji radiowych można słuchać przez Internet, a niektórych tylko tam.
The nadir of FM radio’s existence was reached between 1953 and 1956, with numerous stations leaving the air and public interest being almost non-existent. These were also dark years for FM’s inventor, Major Edwin Armstrong -- most of his FM patents had expired in 1950, and his licensing income was dwindling because of the downturn.
radio technology. mass communication. public-service radio. program. Top Questions. What is radio? Was radio used in World War I? Where are radio waves located on the electromagnetic spectrum? Where was radio invented?
15 wrz 2015 · International Picture. Commercial FM stereo radio formally commenced in Australia with test broadcasts in 1979 . The first commercial FM radio station in Australia was 3EON (now Triple M) which commenced broadcast on July, 11, 1980 in Melbourne. The Japanese FM radio band allocation is 76 to 90 MHz, a unique allocation in global terms.
