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Details Road Name: Southern Pacific (Speed Lettering) Road Number: 7828 Product Line: Master Scale: HO Scale Features: Pilots with and without anti-climber Cab headlights or low-nose headlights Cab with 4 or 2 side windows Bell mounted under the sill or on the long hood FB-2, AAR type B, or Blomberg truck side-frames as appropriate Separately-applied scale detail parts See through step detail on sill Etched metal radiator grilles Painted crew members Factory-equipped with AccuMate knuckle couplers Coupler pocket designed to accept AccuMate Proto-couplers Five-pole skewed armature motor with dual flywheels Directional lighting Atlas Master Series Gold Additional Features: Supports all DCC-programming modes Flexible mapping of function keys F0 to F31 . Follows all NMRA DCC standards and recommended practices. ESU LokSound Functionality Features: Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds throughall eight notches, bell, air horn, air compressor, dynamic brakes and more. There are 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals. Manual & Automatic Notching modes with the ability to change modes on the fly are provided for true realism. Overview: General Electrics Dash 7 locomotive line was introduced as a replacement for the older Universal-Series of the 60s and early 70s. Dash 7 seriesimprovements included increased fuel efficiency, tractive effort and reliability. The B23-7 was a direct replacement for the 2,250HP U23B model, whilethe B30-7 replaced the 3,000HP U30B. The first B23-7s were produced for Conrail in September, 1977, and the first B30-7s were produced for Friscothree months later. B23-7 production continued through 1984, with a total of 535 units built. Conrail was the largest purchaser of the model, with atotal fleet of 141 units. 199 B30-7s were produced through 1981, with the combined fleets of Southern Pacific and Cotton Belt being the largest at 110units. Several features distinguished B23-7s and B30-7s from predecessor models. The long hood stepped outward in the area of the exhaust stackto accommodate a relocated oil cooler. In addition, the frame was 2 feet longer than that of the U23B. An FB-2 style truck was offered as standardequipment, but some railroads opted to use trade-in trucks. Therefore, AAR type B and Blomberg trucks could be found on some models. Six powerassembly doors (located near the center of the long hood) indicated that the B23-7 was powered by a 12-cylinder GE FDL engine. Eight power assemblydoors in the same location help to identify the B30-7, which included a 16-cylinder FDL engine.