Hello all,

ok, after I have restartet with model railroading, it's now time to make my decision which DCC equipment I will buy and install.

The mainline run of my 0n30 layout will be 180 feet with two decks, the maximum of locomotives  will be ten simultaneously. I really don't know where to place so much people in sessions, but I think, so I will have a little 'reserve'.

I am running a Digitrax operation with an AR1 and Kato engines.  The auto-reverse was installed per the instructions and works great.  My question is what is taking place when the engines move across the gaps.  Is their a polarity reversal on the auto-reverse section of the track or is the decoder in the engine changing or what????  I understood with DCC the AC voltage is constant throughout the layout, is there also DC on the track that reverses?

Brian K

I was playing around with one of the Athearn SD40-2's that I will be upgrading to DCC and some sound, and drug out the RRamp Meter.  

I had the engine at dead stop stall, and I was only showing anywhere between .20 and .40 on amps when throttle set on 12 volts, pure DC.  I drug out some others, and they all were in the same range.  Put two together and stalled them and it was not quite double that single unit range.

Anyone had experience with the MRC 0001665 sound decoders?

Likewise the Digitrax Sound bug and SFX 0416 sound decoders?

any advice appreciated.

Peter