Sale N scale Micro Trains N Micro Trains Line N 983 02 207 Southern Pacific Air Repeater Cars 2-Pack Micro Trains Line N 983 02 207 Southern Pacific Air Repeater Cars 2-Pack Air Repeater Cars were used to increase efficiency of train air brakes, especially on long trains and during colder weather. These 50’ boxcars include a repeater relay... $73.95 $55.99 Add to Cart Add to Wish list Compare