File:Bell telephone magazine (1922) (14569354909).jpg

Identifier: bellvol25telephonemag00amerrich (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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six months to two years. Naturally, the obvious benefits tobe gained by using printing telegraphdevices, such as the teletypewriter, onradio circuits had interested severalorganizations before the War, andconsiderable work had been done inthis direction. This work had been moderately successful, and regularoperation had been established overa few of the more favorable radiopaths. However, the fading andstatic gremlins had prevented the ex-tensive use of printers in radio. During the Battle of Britain, theBritish Government became fearfulthat the Germans might interrupt sev-eral of the cables between the UnitedStates and England. This wouldthrow the entire load on the existingradio circuits, most of which weresubject to interruption in the wintermonths by electromagnetic storms.The American Telephone and Tele-graph Company and the British Gen-eral Post Office jointly operated along-wave radio telephone circuit be-tween New York and London. Thiscircuit is usually at its best when short
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The Army s multi-channel service gets close attention at the Lo)ig Lines Departments telegraph testboard in Washington 1946 Command Circuits lO waves are at their worst. The Brit-ish Post Office therefore proposed aplan for establishing several emer-gency telegraph channels on this radiocircuit. Tests were made ; and thoughthe channels were far from perfectthey were well worth while as anemergency measure, so the plan wasadopted, and arrangements weremade to use it if necessary. Al-though this need never arose, an ideahad been born, and speculation be-gan in the Long Lines Departmentas to other possible applications ofthis technique. Trill/s Prove Successful Suddenly this interesting train ofthought was turned in a new direc-tion by the bombing of Pearl Harbor,and our immediate entry into theWar. The Army would surely needoverseas communications beyond allprecedent. Overseas telephone serv-ice with enemy-held countries hadbeen suspended, leaving high-graderadio facilities and expert t

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