@cjack posted:Interesting thought. What’s the nature of the DCS signal?
The DCS signal is bi-directional, and the ability for the locomotive to talk back can't be amplified without internal control from the DCS controller, AKA the TIU. The DCS signal is also just present when there is a command coming and going, and it's mandatory to know what is happening in the command so you know when to turn the buffer off.
@Adrian! did quite a bit of research on this topic, and no practical solutions were forthcoming. If he can't get it working, I'm not going to even try! 
TMCC/Legacy, OTOH, is a unidirectional signal that can be easily buffered because it's always there and it only goes out, there is no return traffic.
The TMCC buffer is simple in concept, any buffering of the DCS signal is anything but simple!
