HO F3A/F3B Locomotives with DCC and Sound Passenger GN F3A- #261A F3B-#261B (ATHG-1635)

HO-scale F3A/F3B locomotives in Great Northern passenger livery deliver authentic two-unit diesel power for DCC operation and onboard sound. The A and B units feature see-through cabs with full interiors, directional LED lighting, and a heavy die-cast frame for reliable traction. Body-mounted scale knuckle couplers (Kadee-compatible) ride on RP25 wheels for smooth HO-scale operation, while Quick Plug plug-and-play DCC technology with a 21-pin NEM connector simplifies installation. Painted and printed schemes are replicated with separately applied metal and injection-molded details, etched metal fan grilles, and prototypical pilots and grab irons for a realistic, on-track presence.

Sound-equipped versions include onboard DCC decoders with SoundTraxx Tsunami2, delivering engine, horn, and bell sounds that work in both DC and DCC. Dual cube speakers and separate sound boards in the A and B units produce a rich, authentic soundtrack, with NMRA-compatible functions in DCC mode and CVs that permit MU lashups and performance tuning. Roadname variants for GN, CS, and DRGW reproduce era-appropriate details such as beacons or Gyralights, pilot configurations, and other period features, while a Genesis driveline, all-wheel electrical pickup, and precise gearing ensure smooth, quiet operation on HO track. The models require a minimum radius of 18 inches, with 22 inches recommended for optimal clearance on most layouts.