I find it interesting that some decoders have available “Auto-Notching” and some very few allow manual notching separate from the throttle setting so that one can creep up a serious grade around 10 miles an hour while the diesels are screaming in notch 7 or 8, as is often the case on the prototype, This ability is something to look for if you are into realistic operations. John
QSI, Soundtraxx Tsunami, Digitrax SFX and LokSound all have this option.
David B