To secure 2-way communication between dispatcher and freight and passenger trains, maintenance trucks and supervisors' automobiles, Chicago South Shore and South Bend, electrified railroad operating between Chicago and South Bend, Ind, has adopted space radio relay system on 77 mi of road; remote radio repeater or relay stations are controlled entirely by radio and independent of land wire lines. (See also Ry Age v 126 n 25 June 18 1949 p 1202-4)
Radio freed from wire-line linkage
Ry Signaling
Railway Signaling ; 42 , n 6
1949
4 pages
Aufsatz (Zeitschrift)
Englisch
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