GRJ, have you considered selling a small board that adapts the 4-channel transmitter to be driven by an ASC or AIU? The idea is to provide remote control to rolling stock via your existing remote. The board could have inputs for push-button switches to allow activation for conventional layouts. So not just turn on/off music modules, but remote couplers, passenger car lighting, dump logs anywhere on layout, etc. I realize your can do this with ERR aftermarket modules but that requires command control and TMCC.
Or maybe a board that adapts the 99 cent barebones tx/rx modules though would require a PIC or something similar? Not sure if there are any regulatory hassles for RF emissions.
