I’ve begun using RC Trains radio control systems out of the UK and am extremely pleased. If you are curious, Google them at rctrains.co.uk. I’m planning to do a clinic on their system after the holidays are over.
The receiver’s are minute and the transmitter I have could conceivably control upto 12 locomotives simultaneously. Plus it’s a lot less expensive than other systems. As an RC installer i’d Make a good cop but I installed the receivers and bound them in two LGB Forneys in a couple of hours. Easy and no trailing cars.