Description of loudspeaker communication system in Roper Yard of Denver and Rio Grande Western, Salt Lake City, Utah, which provides 2-way communication between yardmasters in elevated towers and yard crews working near talk-back speakers located along leads and at other strategic points; monitoring loudspeakers are located in yard office and in office of assistant superintendent. (See also Ry Age v 122 n 12 Mar 22 1947 p 594-5)


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    Title :

    Loud-speakers on Rio Grande


    Additional title:

    Ry Signaling


    Published in:

    Publication date :

    1947


    Size :

    6 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Loud-speakers on Rio Grande

    Engineering Index Backfile | 1947


    Loud speakers aid yard operation

    Engineering Index Backfile | 1944


    Loud speakers aid yard operation

    Engineering Index Backfile | 1944


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