History of radio History of radio (Announcer's test) It is also known as the Tibetan Memory Trick, and can be traced to the Boy Scouts' Song Book as well as Flo & Eddie of The Turtles. ...more on Wikipedia about "Announcer's test"
Broadcasting House is the headquarters of the BBC in London, England. Situated in Portland Place, it is normally home to Radio 2, 3, 4, 6 Music and BBC 7. Architect G Val Meyer designed the building, which was officially opened on May 14 1932 and is now Grade II* listed. ...more on Wikipedia about "Broadcasting House"
Guglielmo Marconi, GCVO ( 25 April 1874 – 20 July 1937) was an Italian electrical engineer and Nobel laureate, known for the development of a practical wireless telegraphy system commonly known as the " radio". Marconi was President of the Accademia d'Italia and a member of the Fascist Grand Council of Italy. ...more on Wikipedia about "Guglielmo Marconi"
The pre- and early history of radio is the history of its technology. Later, the history is dominated by programming and contents, which is closer to general history. ...more on Wikipedia about "History of radio"
Morse code is a method for transmitting information, using standardized sequences of short and long marks or pulses — commonly known as "dots" and "dashes" — for the letters, numerals and special characters of a message. Originally created for Samuel Morse's electric telegraph in the mid-1830s, it was also extensively used for early radio communication beginning in the 1890s. However, with the development of more advanced communications technologies, the use of Morse code is now largely obsolete, although it is still employed for a few specialized purposes, including navigational radio beacons, and by CW (continuous wave) amateur radio operators. Morse code is the only digital modulation mode designed to be easily read by humans without a computer, making it appropriate for sending automated digital data in voice channels. ...more on Wikipedia about "Morse code"
The Museum of Broadcast Communications is located in Chicago, Illinois. Its mission is "to collect, preserve, and present historic and contemporary radio and television content as well as educate, inform, and entertain through our archives, public programs, screenings, exhibits, publications and online access to our resources." It is one of only three broadcast museums in America and home to the nation’s only Radio Hall of Fame. ...more on Wikipedia about "Museum of Broadcast Communications"
The East Coast branch of The Museum of Television and Radio is located in the heart of Midtown Manhattan in New York City ( USA). The West Coast branch is located near Rodeo Drive in Beverly Hills, California. This museum is committed to the idea that every television program is a work of art to be preserved for posterity's sake. Instead of being a museum of artifacts and memorabilia, the museum is mostly comprised of screening rooms. The features exhibited range from lost episodes of classic television shows, to documentary features about the history and impact of television and radio. ...more on Wikipedia about "Museum of Television and Radio"
The spark gap transmitter was the first practical way to send radio signals. Before the invention of the vacuum tube (or thermionic valve ) in 1907, the only way to produce large amounts of radio frequency (RF) energy was to use the pulse created when a high voltage caused air to ionize, allowing current to flow across a spark gap. If the spark gap is connected to a LC circuit, the energy produced is concentrated near the resonant frequency of the circuit. If the spark is interrupted many times per second (say by some mechanical device) and the LC circuit is coupled to an antenna, a buzzing sound will be heard in a radio receiver tuned to the same frequency some distance away. By switching the voltage across the gap on and off with a telegraph key, it becomes possible to communicate using Morse code. ...more on Wikipedia about "Spark-gap transmitter"
Wireless is an old-fashioned term for a radio receiver, referring to its use as a wireless telegraph. The term is widely used to describe modern wireless connections such as wireless broadband internet. ...more on Wikipedia about "Wireless"
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