Release of war time developments of micro-frequency radio, using multi-channel time pulse modulation, disrupts previous conceptions of use of line wires as well as carrier on wires, while Western Union adds to confusion by announcing adoption of new radio systems, thereby abandoning ownership of pole lines on railroad.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Railroad telegraph and telephone saw big change in 1945


    Weitere Titelangaben:

    Ry Age


    Beteiligte:
    Dunn, J.H. (Autor:in)

    Erschienen in:

    Railway Age ; 120 , n 1


    Erscheinungsdatum :

    1946


    Format / Umfang :

    5 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Railroad telegraph traffic

    Birt, W.R. | Engineering Index Backfile | 1922


    Telegraph and telephone section

    Engineering Index Backfile | 1936


    Telegraph and telephone section

    Engineering Index Backfile | 1930



    The railroad telephone

    Hammond, C.A. | Engineering Index Backfile | 1902