Athearn HO F3A w/DCC & Sound, UP/Freight #1426
Athearn HO F3A w/DCC & Sound, UP/Freight #1426
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Manufacturer: Athearn


  • All-new LED lighting
  • Rubber MU hoses for durability


  • This A-B-A set of EMD demonstrators were built in 1950 (hence their road numbers).
#1950A AND #1950C F7A
  • Horizontal twin-beam headlight
  • No dynamic brakes
  • Leslie A-200 airhorns
#1950B F7B
  • B-unit has steam generator


#52, #53A F3A
  • Delivered to CNJ in 1947
  • “Chickenwire” grills
  • Tall fans
  • Back-up light


  • Model include decal sheet


#1426, #1451, #1429 F3A
  • Winterization Hatch
  • “Chickenwire” Grills
  • Passenger pilot
  • Back-up light
  • Roof grabirons
  • Decal sheet with UP train numbers and locomotive numbers included
#1430B, #1432B F3B
  • Equipped with a steam generator


  • Spark arrestors
  • Rear red marker light
#327L F7A:
  • Leslie A-200 horns
  • “Shop replacement” F-3 style dynamic brake grills
  • Operating clear and red oscillating lights
  • Can-type antenna
#340B F7B:
  • Steam generator vents and water fill
  • Red marker lights on each end
  • F-3 style dynamic brake vents
#338L F7A:
  • Leslie S5T horn
  • 48” dynamic brake fan
  • Illuminated clear and red oscillating lights (Effect on DCC/sound version)
  • Can-type antenna
#338B F7B:
  • Red marker lights on each end


  • All units are powered
  • Factory installed SoundTraxx Tsunami2 sound and DCC decoder (DCC+sound units only)
  • DCC+Sound models are “dual mode” and will operate under both DCC and DC
  • Directional constant lighting; headlight brightness remains constant
  • On DCC-ready B-units, back-up lights or marker lights (if equipped) will come with LEDS, but wires will not be connected to the circuit board.
  • 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 Non-sound version features 21-pin NEM DCC plug
  • 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
  • LEDs for realistic appearance
  • 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
  • Excellent low-speed operation
  • 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


EMD F-units were a line of diesel-electric locomotives produced between November 1939 and November 1960 by General Motors Electro-Motive Division and General Motors-Diesel Division. Final assembly for all F-units was at the GM-EMD plant at La Grange, Illinois and the GMDD plant in London, Ontario, Canada. They were sold to railroads throughout the United States, Canada, and Mexico.

Structurally, the locomotive was a carbody unit, with the body as the main load-bearing structure, designed like a bridge truss and covered with cosmetic panels. The so-called bulldog nose was a distinguishing feature of the locomotive’s appearance, and made a lasting impression in the mind of the traveling public.

The F-units were the most successful “first generation” road (main line) diesel locomotives in North America, and were largely responsible for superseding steam locomotives in road freight service. Before this, diesel units were mostly only built as switcher locomotives, and only used in rail yards.

F-units were sometimes known as “covered wagons”, due to the similarity in appearance of the roof of an F-unit to the canvas roof of a Conestoga wagon, an animal-drawn wagon used in the westward expansion of the United States during the late 18th and 19th centuries. When a train’s locomotive consist included only F-units, the train would then be called a wagon train. These two usages are still popular with the railfan community.

This page is based on the copyrighted Wikipedia article “EMD F-unit” ; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA.


Minimum Age Recommendation:14 years
Is Assembly Required:No

Search Terms: genesis, f-unitloco, LED, decoder, soundtraxx, tsunami2, ath_0418

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Athearn HO F3A w/DCC & Sound, UP/Freight #1426 Reviews

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