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Athearn Genesis HO EMD GP7U, Tsunami2 Sound & DCC, ATSF #2122, ATHG64256


1 in stock

Pre-Order by Oct 28th
MSRP: $289.98

SKU: athg64256 Snd Categories: , , , , Tags: , , ,


Athearn Genesis HO EMD GP7U, w Tsunami2 Sound & DCC
Sante Fe #2122

Athearn Genesis Item #: ATHG64256

These EMD GP7U locos are due to ship in August 2017. Please be aware that when you pre-order one of these locomotives your card is not charged until the locomotive has come in and we are ready to ship it to you.


  • Front and rear MU catch boxes with footboard
  • Trainline and MU hoses
  • Coupler cut levers
  • Drop steps unless noted
  • MU stands
  • “Nub” style walkway tread
  • Bell located behind the right front step
  • Fine-scale handrails for scale appearance
  • Wire grab irons
  • Lift rings
  • Windshield wipers
  • See through cab windows Full cab interior
  • Etched metal radiator intake grilles and fan grilles
  • Air tanks mounted below sill unless noted
  • Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks
  • Blomberg-B trucks with appropriate bearing caps
  • Sander lines
  • Speed recorder unless noted
  • Fully-assembled and ready-to-run
  • DCC-ready features Quick Plug™ plug-and-play technology with both 8- and 9-pin connector
  • Scaled from prototype resources including drawings, field measurements, photographs, and more
  • Accurately-painted and printed paint schemes
  • Body mounted McHenry operating scale knuckle couplers
  • Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain for trouble free operation
  • All-wheel drive with precision gears for smooth and quiet operation
  • All-wheel electrical pickup provides reliable current flow
  • Wheels with RP25 contours operate on all popular brands of track
  • Incandescent bulbs for realistic appearance
  • Bidirectional constant lighting so headlight brightness remains constant
  • Heavy die-cast frame for greater traction and more pulling power
  • Packaging securely holds for the model for safe storage
  • Replacement parts available
  • Minimum radius: 18”


  • Onboard DCC decoder with SoundTraxx Tsunami2 sound
  • Sound units operate in both DC and DCC
  • Full DCC functions available when operated in DCC mode
  • Engine, horn, and bell sounds work in DC
  • All functions NMRA compatible in DCC mode
  • Excellent Slow speed control
  • Operating lighting functions with F5 and/or F6
  • Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights
  • Many functions can be altered via Configuration Value (CV) changes
  • CV chart included


  • Late coupler cut levers
  • GP7u Battery Box Doors
  • Dual sealed beam headlights with anti-glare shields
  • Late low nose cab interior with AAR control stand
  • Santa Fe Topeka Cab side panel without armrest
  • Small rear view mirror fore of right side cab window
  • Sunshade tracks with sunshade
  • Vapor air conditioner
  • Nathan AirChime K3LA 3-chime air horn with square bracket
  • Antenna ground plane with large Sinclair antenna
  • Short rear step box on left side behind the cab
  • Small hood-mounted inertial air filter hatch
  • Four exhaust stacks
  • 36” radiator fans with blades visible inside
  • Ratchet brake
  • Underframe mounted bell
  • Air tank set with Salem air filter
  • Blomberg-B trucks with Hyatt bearing caps
  • Spare knuckle mounted on the right side trucks
  • Speed recorder

These locomotives represent a fleet of GP7 diesels upgraded by the Santa Fe in the mid-seventies. While the chopped nose and “Topeka Cab” are the most noticeable, many other modifications were made. Upgraded trucks, new electrical equipment, air conditioning, four-stack exhaust manifold and removal of the dynamic brake (if so equipped) are some of the others.

As per the prototype, the details of these units differ from road number to road number. Our models represent these differences. Two of the units include the modified dynamic brake system and the other two are engines that were not so equipped. Three represent the “no drop step” option that was standard on Santa Fe early Geeps. The fourth unit has the “always down” drop step common to most of these rebuilds.

Side skirts vary from unit to unit as does the horn, antenna and mirrors. All of these details are gleaned from many photos of the prototype. Details that you’ve come to expect from a Genesis model.


In 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end-cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components.

In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last GP7s. Later versions would include different louver arrangements and the last ones would come without the frame skirting. The GP9 was availalbe with all of the fuel tank, steam generator, and dynamic brake options as the GP7 including “torpedo boats.”


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