File:Bell telephone magazine (1922) (14753218791).jpg

Identifier: belltelephonemag13amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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ed over long distance telephone circuits,a notable example being the transmission of the ceremoniesattending the burial of the Unknown Soldier on Armistice Day,1921, when large audiences in New York and San Francisco, aswell as that at Arlington, Va., were enabled to listen to theimpressive program. The apparatus and methods developed for use in connectionwith the public address systems were applied to the new fieldof radio broadcasting and proved to be invaluable contribu-tions, since it also demanded high quality reproduction ofspeech and music. An early instance of the combination of the public addresssystem, long distance telephone lines and radio broadcastingwas afforded by the reporting of a football game played inChicago in the fall of 1922. By means of high quality trans-mitters and amplifiers located at the football field, announce-ments of the plays and the applause of the spectators weredelivered to a cable circuit extending to the toll office of the 80 NETWORK BROADCASTING
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These Were the Chain Broadcasting Circuits Regularly Furnished by the BellSystem at the End of 1927. telephone company in Chicago. This circuit was connectedthere to a toll line to New York, where it delivered the tele-phonic currents to a radio broadcasting transmitter. In ParkRow, New York, a truck was provided with a radio receivingset which was arranged to operate a public address system. Inthis experiment the factors involved were essentially thosewhich characterize modern chain or network broadcasting: asource of the program; suitable apparatus for picking it up; atelephone circuit connecting this source with the radio broad-casting station; the transmitter at the latter station; and,finally, the listeners receiving set. Early in the following year, station WEAF was to participatein experiments which more closely suggested the linking oftwo or more broadcasting stations for the transmission of thesame program. The first of these experiments took place in January, 1923,when a spe

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