Installation on Washington and Old Dominion railroad enables 2-way communication between wayside offices, offices and trains, and between trains in range of each other; equipment on locomotives and in wayside offices is Bendix Type MRT-5B, designed for adjacent channel operation.
Radio replaces telephones
Ry Signaling Communications
Railway Signaling and Communication ; 44 , n 5
1951
2 pages
Aufsatz (Zeitschrift)
Englisch
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