Q. I am new to DCC and climbing the learning curve. A friend of mine recommends using decoders with the back emf feature. I have been studying the specs on the M-1 decoder and cannot determine if it has this feature or an equivalent. I would appreciate your answer to this.
A. As of 2008 all TCS decoders now have BEMF as a standard feature.

In addition, all TCS decoders have “Dither” which is adjustable. Dither has similar effects as “BEMF”. It can be best described is being like “pulse power” on a conventional DC power pack. With Dither you adjust the frequency of the pulses at CV56. Adjust the amplitude of the pulses at CV57.