HO SD70M Locomotive with DCC and Sound, UP #3973 (ATHG-1608)

HO Scale SD70M Locomotive with DCC and Sound in Union Pacific livery, number 3973. This detailed HO model recreates EMD’s modern freight locomotive with an onboard DCC decoder and SoundTraxx Tsunami2 sound for authentic engine, horn, and bell effects on both DC and DCC layouts. It rides on a heavy die-cast frame with precision gearing for smooth, quiet pulling, while RP25 wheel contours ensure reliable operation on popular HO track brands. LED lighting and see-through cab windows with a full interior enhance realism, and body-mounted scale knuckle couplers keep couplers in true scale. The model is designed for HO layout use, whether you’re building a realistic yard scene or running long freight trains.

Road-name specific UP details include front pilot ditch lights, a 5,000-gallon fuel tank, and front EMD low snowplow on select numbers, with variations like flat radiators and PTC antennas on others. The model supports full DCC operation with Quick Plug plug‑and‑play 21-pin NMRA connector and CV-based customization, and a CV chart is included for easy setup. It also embraces Legendary Liveries—curated paint schemes that celebrate famous UP schemes—and Primed for Grime styling, providing a ready starting point for weathering to mirror in-service wear. Prototyped from drawings, measurements, photographs, and other references, this SD70M captures the scale presence and detail of UP’s modern locomotives on HO layouts.