New loudspeaker systems and radio at Columbus, Ohio, yard of Chesapeake and Ohio; Parsons yard consists of 4000 car west yard, and 2000 car east yard, known as Mosel; radio is installed on 25 yard engines and 7 cabooses; loudspeakers include 92 talk-backs and 11 pagers.
C and O upgrades yard communications
Ry Signaling Communications
Railway Signaling and Communications ; 49 , n 9
1956
3 pages
Article (Journal)
English
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