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GTEL Turbine  LokSound 5 North American and Australian Sound files N XL L M4

Beginning in the 1950s, the Union Pacific Railroad sought higher and higher horsepower ratings from its locomotives to help move increasingly heavier and longer trains. Gas-Turbine Electric Locomotives (GTEL) technology promised much higher horsepower ratings over the diesel-electric locomotive designs of the time. General Electric (GE) and American Locomotive Co. (ALCO) built the first GTEL design, a double-ended, 4,500 horsepower, B+B – B+B unit, delivered as UP #50 in 1949.

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