A friend of mine had a DCC-Ready MTH GP-35 (HO scale) for a while, and I offered to install a DCC decoder in it since after all it's just a trivial task of inserting a 8-pin decoder in there (no sound needed). I mean, how hard can it be?

Last week I added an ESU PowerPack (a.k.a. current keeper) to the Rapido RDC SP-10. I'm really satisfied with the outcome, however there is a little important twist so I would like to explain how to do it.

Just got the Rapido RDC, SP-10 version.

To open it: on a cradle, remove the coupler screw and pull the coupler box out. Repeat for both couplers. It all stayed together, which was nice.