I will add that some systems are more capable than others as they arrive at your door. My old Clunk, the Super Empire Builder from Digitrax, has no problems whatsoever programming any decoder that I have either on the main or on the programming track that also acts as the lead to my turntable. I have two different decoders from Sountraxx, including several Tsunamis, Loksounds, and several versions of QSI. None of them seem to require a booster or a resistor when using the Super Empire Builder's DB150.
-Crandell