The Athearn ATHG27325 SD90MAC - H Phase I Union Pacific #8509 is a remarkable HO scale model train. Union Pacific was the sole buyer of the SD90MAC - H. The 8500 series represents the second and third orders delivered from 1997 - 1999. This model has many great features. It's a brand - new model, fully assembled and ready to run. It has DCC - ready Quick Plug™ technology with a 21 - pin NEM connector. The paint schemes are accurately painted and printed, and it's scaled from prototype resources. It comes with coupler cut levers, rubber MU hoses, and more. The Genesis 2.0 version offers etched, see - through walkway steps, illuminated number boards and ground lights. Sound - equipped models have an onboard DCC decoder with SoundTraxx Tsunami2 sound and dual cube speakers for great sound quality in both DC and DCC modes. With a heavy die - cast frame, it provides greater traction and pulling power, and its packaging ensures safe storage.

Using this Athearn SD90MAC - H model train is easy. First, make sure you have the right power source, whether it's DC or DCC. If you're using DCC, connect it properly using the 21 - pin NEM connector. When running it, enjoy the smooth and quiet operation thanks to the all - wheel drive and precision gears. The train has LED lighting, so it looks great even in low light. For maintenance, keep it clean. You can use a soft brush to remove dust from the body, wheels, and all the small details. Check the couplers regularly to make sure they're working properly. Store it in the provided packaging to protect it from damage. When handling, be gentle, especially with the fine - scale Celcon handrails and other delicate parts. And that's it! You're all set to have a great time with your model train.