those this board model#825 p.c.b01 have a decoder instal already
JP of Acton MA, USA writes:
Your question appears to be regarding N scale trains. You appear to be asking about a "heavy mountain" type steam loco, and whether or not its circuit board has a decoder already installed or not.
The answer to this question is to do some research on the N scale loco itself to see if it features a decoder already installed or not. Some N scale locos do feature decoders, and some don't. The ones that don't, operate on regular DC power. To make a DC loco operate under DCC, the end-user would have to purchase and intall a decoder.
Also, since your question is about N scale, it belongs in the N scale froums. This forum is for the Williams by Bachmann O scale trains.