I need to build or buy a control system that will allow me to move from place to place around my layout by plugging and unplugging a telephone type or multi-pin type plug from a hand-held box with speed and direction controls. About 4 locations would be needed and the train must continue doing exactly what it is doing when I unplug and move to another location. I have found such a system at Dallee Electronics but it is extremely expensive. I have also looked at MRC’s more reasonably priced Tech 4-350. It comes with a walkaround controller connected by a coiled telephone type cord that allows you to wonder about 15 feet from the power supply. Has anyone had experience with the Tech 4-350? Would it be possible to install several stations (female telephone-type outlets) around the layout (all connected to the power supply) so that I could plug into one after another as I follow the train? Certainly other guys have done this sort of thing without taking out a second mortgage. How can it be done? What should I consider? What do I have to buy? How much should I be prepared to spend? Thanks.