A newly developed leaky coaxial cable with an insulation diameter of 15 mm was adopted for train communication on osaka's subway line. the subway tunnel, with a total length of 8 kilometers, is divided in the center by a structure supporting the ceiling into two section for the double-trackline. As a result, devices for branching and combining became necessary. This need was met by developing a hybrid circuit using the coaxial code. Measurement of field strength upon completion revealed a sufficiently high level for communication.


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    Title :

    Leaky coaxial cable for train communication


    Contributors:
    Yoshiyasu, T. (author) / Okada, S. (author) / Hatta, T. (author) / Hanaoka, T. (author)

    Published in:

    Hitachi Review ; 20 , 5 ; 204-211


    Publication date :

    1971


    Size :

    8 Seiten, 14 Bilder, 1 Tabelle, 4 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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