Portable Pakset transmitter in locomotive cab controls power switch for mine run train on Santa Fe at Carlsbad, NM; impulses are received at switch location by radio apparatus and amplified to control relay which causes power switch machine to line switch for train to enter yard, and then clear signal accordingly.
Radio controls power switch
Ry Age
Railway Age ; 136 , n 11 ; p 65
1954
Article (Journal)
English
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