HO Scale: EMD FP7A-FP7B set - DCC & Sound - Southern Pacific

Athearn Genesis

SKU Road Number Qty
ATHG22838 6458 & 8300 Sold Out
ATHG22837 6456 & 8302 Sold Out
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Athearn Genesis HO Scale: FP7A-FP7B set - DCC & Sound - Southern Pacific 'Black Widow'


  • Represent modified locomotives after 1956
  • Modified side skirt
  • Whip antenna, A-units
  • Nose mounted m/u door, A-units
  • Nose side grab irons, A-units
  • Nose mounted lift lugs, A-units
  • Early style 4-hose MU hoses
  • FARR grilles
  • Separately applied nose mounted photo-etched and printed sunset medallion, A-units


This unit detailed to match in service photos after 1956. Five-chime air horn, large fuel tank and EMD modified side skirts are a characteristic of this era. Snow plow pilot added after 1956. #6456, #8302:

As above these units are detailed to match photos taken after 1956. The a-unit has a three-chime air horn, and hasn’t yet received it’s plow pilot. Photos show it survived without the plow until the very early sixties. Both units of this set still have the EMD modified “mini skirts” above the large fuel tanks. #6458, #8300:

These two are detailed to match a couple of “Black Widow’ painted engines that lasted until the mid sixties-1965 to be exact. The a-unit has the typical five-chime airhorn, plow pilot, nose side mounted ladder and like most Espee f-units in this era the small side skirts have been removed.


  • All units are powered
  • Factory installed SoundTraxx Tsunami2 sound and DCC decoder (DCC+sound units only)
  • Tsunami sounds are compatible with both DCC and DC operation (DCC+sound units only)
  • Genesis driveline with dynamically balanced five pole skew wound motor and dual flywheels
  • Directional constant lighting; headlight brightness remains constant
  • Scaled from prototype resources including drawings, field measurements, photographs, and more
  • Fully-assembled and ready-to-run
  • Accurately-painted and printed paint schemes
  • Separately applied photo etched metal and injection molded detail parts
  • Cab interior
  • Coupler cut levers
  • MU hoses
  • Trainline hose
  • Windshield wipers
  • Lift rings
  • Wire grab irons
  • Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks
  • Sander lines
  • Body mounted McHenry scale knuckle couplers - Kadee compatible
  • DCC-ready features Quick Plug™ plug-and-play technology with both 8- and 9-pin connector (DCC-Ready only)
  • 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
  • Back up light
  • Blomberg-B trucks
  • 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 decoder pre-installed
  • Sound units operate in both DC and DCC
  • Individual sound boards installed in both A and B units (sound units only)
  • Engine, horn, and bell sounds work in DC
  • Some functions are limited in DC
  • All functions NMRA compatible in DCC mode
  • Slow speed control
  • Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights
  • Lighting effects such as beacons, Gyralight where prototypically accurate
  • Many functions can be altered via Configuration Value (CV) changes
  • CV chart included in the box

The EMD F7 was a 1,500 horsepower (1,100 kW), B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors’ Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD’s La Grange, Illinois plant, excepting locomotives destined for Canada, in which case final assembly was at GMD’s plant in London, Ontario.

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