Athearn HO SD70M, NS/Flare Grey Ghost #2628
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Manufacturer: Athearn


  • Many NS SD70M units were delivered in primer and ran this way into the mid 2000s
  • Late Cab
  • 4 panel flared radiators
  • K5LA horn
  • Sinclair antenna
  • Small snowplow
  • Warning labels printed in red per protoypes
  • Appropriately-colored MU cables
  • Spare knuckles on rear pilot
  • Late 5000 gallon fuel tank
  • Illuminated front & rear ditch lights; alternate when horn is activated based on direction of travel on DCC+Sound Version


  • Late Cab
  • 4 panel flared radiators
  • K5LA horn
  • PTC antenna boxes w/ separately applied antennas
  • Small snowplow
  • Warning labels applied per protoypes
  • Appropriately-colored MU cables
  • Spare knuckles on rear pilot
  • Late 5000 gallon fuel tank
  • Illuminated front & rear ditch lights; alternate when horn is activated based on direction of travel on DCC+Sound Version


  • The last new EMD units delivered to the SP, these 25 SD70Ms were built in 1994.
  • Early Cab with nose door
  • Flat radiators
  • Whip and can-type antennas
  • P3 horn
  • Large snowplow
  • Spare knuckles on trucks
  • Appropriately-colored MU cables
  • 4900 gallon reinforced fuel tank
  • Battery charging receptacle
  • Illuminated front ditch lights


  • From first production group of UP SD70Ms. This particular unit was used to lead the Big Boy, also numbered 4014, on its trip from West Colton to Cheyenne.
#3978, 3997:
  • Former SP units repainted into variation of UP lightning stripe scheme. Equipped with PTC antennas.
  • Patched former SP unit; lasted until 2004 before being fully repainted.


  • CSX units are former EMD demonstrators. In a roster increasingly dominated by GE, a group of these venerable units have been sold to Progress rail, returning the units to lease service once again.
  • Early Cab with nose window
  • Customer-installed GPS dome included in box
  • K5LA horn
  • Spare knuckles on rear pilot
  • Appropriately-colored MU cables
  • Early 5000 gallon fuel tank
  • Large or small snowplow per prototype
  • Illuminated front ditch lights; flash when horn is activated on DCC+Sound Version


  • DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector
  • Scaled from prototype resources including drawings, field measurements, photographs, and more
  • Accurately-painted and –printed paint schemes
  • LED Lighting for realistic appearance
  • Coupler cut levers
  • MU hoses
  • Trainline hose
  • See through cab windows
  • Full cab interior
  • Walkway tread
  • Fine-scale Celcon handrails for scale appearance
  • Windshield wipers
  • Lift rings
  • Wire grab irons
  • Detailed fuel tank with fuel fillers, fuel gauges, & breather pipes
  • Sander lines
  • McHenry scale knuckle couplers - Kadee compatible
  • Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain
  • All-wheel drive with precision gears for smooth & quiet operation
  • All-wheel electrical pickup provides reliable current flow
  • Wheels with RP25 contours operate on all popular brands of track
  • Heavy die-cast frame for greater traction and more pulling power
  • Packaging securely holds for the model for safe storage


  • Onboard DCC decoder with SoundTraxx Tsunami2 sound
  • Sound units operate in both DC and DCC
  • Engine, horn, and bell sounds work in DC
  • All functions NMRA compatible in DCC mode
  • Precision slow speed control
  • 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 in the box


Continuing upon the successful SD60-series, in 1992 EMD debuted the next step in locomotive evolution with the SD70-series. While outwardly similar at first glance to the SD60M, the D.C.-drive SD70M featured several external design refinements from the predecessor model. Battery boxes were relocated to the left-hand side walkway immediately behind the cab, a large, boxy forward traction motor blower housing replaced the angular version used on SD60s, the raised walkway duct on the left hand walkway was eliminated, and an intake for the rear traction motor blower on the left hand side of the carbody, directly under the rear radiator intake grill, was added.

Internally, the SD70 boasted improvements as well; a 16-710GB prime mover, rated at 4,000hp, was coupled to a new alternator design, the AR20. New D70TR traction motors were standard, and controlling all of this power and locomotive function was EMD’s new EM2000 microprocessor, which boasted more memory, twice the processing speed, and improved locomotive self-diagnostic capabilities compared to the processor suite used in the SD60. Even more revolutionary was the inclusion of EMD’s patented “Radial” truck design, the HTC-R. This design, which made its debut under EMD Demo SD60 #3, replaced the venerable HT-C truck, and is unique in its ability to shift, or “steer”, the wheelsets laterally through curves, resulting in greatly reduced wheelset and track wear, and coupled with the new D70TR traction motors and EM2000 microprocessor, greatly improved adhesion.

Continuing with previous practice, EMD built a set of Demonstrator SD70Ms, EMD 7000-7002, all equipped with the North American safety-cab (hence the “M” in their model designation), and decked out in an attractive gray, silver, and burgundy paint scheme. These units travelled all over North America, showing off the latest technology from EMD. Southern Pacific, Union Pacific and eventually Norfolk Southern would sign up for the SD70M models. Although NS started out with the “Spartan” cab SD70, they eventually returned for the SD70M model. By 2004 the SD70M began to be delivered with the familiar “flared” radiator grilles. Both NS and UP have examples of these locomotives on their roster, and you can still find the entire fleet of SD70Ms in regular service today.


DCC:Ready/21-Pin NEM
Minimum Age Recommendation:14 years
Is Assembly Required:No

Search Terms: LED, m07sd, sd-70m, sd70loco, 21pin, genesis, ATH_0919

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Athearn HO SD70M, NS/Flare Grey Ghost #2628 Reviews

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