The Athearn ATHG27324 SD90MAC - H Phase I is a fantastic model in HO scale, representing UP Union Pacific #8500. It comes equipped with DCC and Sound Tsunami2. UP's #8503 and #8500 were originally #8203 and #8160 respectively. Some models like #8509, #8512, and #8520 have unique features. Union Pacific was the sole buyer of SD90MAC - H. The 8500 series we offer was delivered between 1997 - 1999. This locomotive has many great features. It's a brand - new model previously only in brass, fully - assembled and ready - to - run. It has DCC - ready Quick Plug™ technology, accurate paint schemes, and is scaled from real prototypes. It comes with coupler cut levers, rubber MU hoses, and more. The Genesis 2.0 version has etched walkway steps, illuminated number and ground lights, and dual Sugarcube speakers for sound models. Sound - equipped models offer great sound with SoundTraxx Tsunami2, work in both DC and DCC, and have precision slow - speed control.

Using this Athearn SD90MAC - H locomotive is easy. First, make sure your track is clean and properly connected. Place the locomotive on the track and power it up. If you're using DC, you can control the basic functions like forward, reverse, and speed. For DCC operation, you can access more advanced functions using a compatible DCC controller. When it comes to maintenance, keep the locomotive clean. Use a soft brush to remove dust from the body, wheels, and mechanical parts. Check the electrical connections regularly to ensure a good current flow. Store the locomotive in its original packaging to protect it from damage. Be gentle when handling the locomotive to avoid breaking the delicate details like the handrails and wire grab irons. If you want to upgrade the sound or other features, make sure to follow the manufacturer's instructions carefully.