So there are kits on deadrail installs that have the decoder and a battery. I assume the Bluerail board itself is separate? If I'm installing it in a premier steam with a big can motor, would you recommend the 5 amp? I imagine it will be doing less than 2 most of the time, and there's a big difference in cost between the 5 amp and 2 amp boards.
Also, I'm assuming I need the external antenna, since the tender is die cast.