New electronic system developed by Link Aviation, Inc, identifies moving trains or freight cars by initials and number; signal is produced when response block mounted underneath car or locomotive passes over magnetic field of wayside coil of wire running between rails; response block weighs 1 lb; information can be transmitted via telephone circuits.
Identify trains or cars
Ry Signaling Communications
Railway Signaling and Communications ; 52 , n 5
1959
Aufsatz (Zeitschrift)
Englisch
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