The invention of a telephone by Est. Angela Geovana Manotoa Diaz

Radio's first steps

amanotoa — 2024-02-29 20:33:54 UTC

-The first radio broadcast in history took place on Christmas Eve 1906, when the song 'O Holy Night' and some Bible verses could be heard from Brant Rock Station (Massachusetts).

-In 1910, Henry H.C. Dunwoody and Greenleaf Whittier Pickard invented the galena radio, the first radio device in history. This AM (Amplitude Modulated) radio receiver detected radio signals in the medium and short wave band.

FIRST RADIO BROADCASTS

amanotoa — 2024-02-29 20:36:11 UTC

-Ten years later, the first regular broadcasts with entertainment programmes began.

-In 1922, George Frost developed a prototype radio receiver and installed it in his Ford Model T, the most popular car at the time. It would take a few years for this invention to be incorporated into the automobile.

The radio revolution

amanotoa — 2024-02-29 21:17:06 UTC

-In the 1940s, radio took a leap forward with the appearance of the first frequency modulation (FM) systems, which improved the radio system.

-John Bardeen, Walter Brattain and William Shockley were three engineers at the Bell Company, one of the first and most important telecommunications companies.

amanotoa — 2024-02-29 21:21:01 UTC

-The three evolved the world of radio and electronics by inventing the first transistors in 1948 and received the Nobel Prize in Physics in 1956.

-Transistors were small devices that replaced radio lamps and made it possible to reduce the size of receivers.

The first broadcasts in Spain

amanotoa — 2024-02-29 21:23:28 UTC

-The first Spanish radio experimenter, Matías Balsera, founded the first Madrid association of radio amateurs and broadcast an opera from the Teatro Real in Madrid in 1912.

-Between 1923 and 1924, the first broadcasts were made on Radio Ibérica in Madrid. The first radio station in Spain was EAJ-1 Radio Barcelona and the second was EAJ-2 Radio de Madrid.

-23 February 1981 was an important day in the history of radio in Spain. That night, Spanish society was able to follow live on radio the attempted coup d'état that took place in the Congress of Deputies.

-Known as 'La Noche de los Transistores' (The Night of the Transistors), that day marked the consolidation of radio as a news medium.