What physical constraints are preventing you from using another wire?
Admittedly I don't know the whole situation, but this seems like a lot of
work to go through to get around one wire.

What about voltage control to for one way and impedance control for the
other?

-Denny


> DCC supports datacommunication in just one way. I need bi-directional
datatransfer (half duplex is fine).
>
> I know that the latest DCC standard privides some means for
bi-directional traffic, but it's too complicated.
>
> Marcel
>
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