Results of tests conducted in North River tunnel of Pennsylvania Railroad; frequencies between about 25 and 1500 Mc are unsuitable; how satisfactory transmission can be obtained up to 6000 ft using frequencies and equipment ordinarily employed in railroad mobile systems and twin-lead cable such as RG-86/U suitably located within tunnel, to couple closely with train antennas.


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    Title :

    Communication with moving trains in tunnels


    Additional title:

    Inst Radio Engrs -- Trans Vehicular Communications


    Contributors:
    Monk, N. (author) / Winbigler, H.S. (author)


    Publication date :

    1956


    Size :

    8 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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