Athearn Genesis G82721 HO Scale EMD GP7 Reading RDG 629 DCC & Sound Era_1950 + The cells are hard-wired with

The cells are hard-wired with 12-gauge Maxx Cable

steering etc

It’s the answer to the question of “What is one of the most important inventions of the modern age

Turn on the transmitter

Army Air Forces a high-altitude

Athearn Genesis G82721 HO Scale EMD GP7 Reading RDG 629 DCC & Sound Era_1950 + The cells are hard-wired withAthearn Genesis G82721 HO Scale EMD GP7 Reading RDG 629 DCC & Sound In 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components. In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last