John Mullan wrote:

> Is there some simple circuit for using the 2 rails of the model
> railroad as the network connection (ie: PICs on the engine receiving
> commands via the rails)?
>
> Is there a simple but cheap alternative to this method?
>
> RF seems like extra work, circuitry and expense.
>
> John Mullan

Put a scope on a model train track.... and enjoy.

The noise level, as a train crosses over a track section, is incredible.

IR is cheap and simple....

DennisB