Of two communications systems installed in Chesapeake and Ohio's Wyoming yard, one includes 48 talk-back speakers and 21 paging speakers, and other base radio station which picks up calls made by car checkers using walkie-talkies to read numbers on cars in yard; two new interlockings at east end of yard expedite arrival and departure of trains.
Loudspeakers and interlockings improve yard operation
Ry Signaling Communications
Railway Signaling and Communications ; 47 , n 4
1954
6 pages
Article (Journal)
English
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