Master VolumeF6 – Master VolumeThere are 10 volume levels. Pressing F6 twice (toggling on then off) raises the MasterVolume one level. The Master Volume loops. That is, if you go past the 10th level it willloop back around to the 1st or lowest volume level.CouplersYour MTH PS3.0-equipped engine comes with remotely controlled Proto-Couplers. Theycan be fired using your DCC handheld.F7 – Front CouplerPressing F7 twice (toggling on then off) will fire your Front CouplerF8 – Rear CouplerPressing F8 twice (toggling on then off) will fire your Rear CouplerForward/Reverse SignalJust like a real engine, you can announce the direction of intended movement usingyour DCC handheld and F9 and F10.F9 – Forward SignalPressing F9 twice (toggling on then off) will sound the Forward Signal. This is twowhistle/horn blastsF10 – Reverse SignalPressing F10 twice (toggling on then off) will sound the Reverse Signal. This is threewhistle/horn blastsGrade Crossing SignalAgain, just like a real engine, you can trigger the Grade Crossing Signal on your engine.This is two long, one short, one long whistle/horn blast.F11 – Grade Crossing SignalPressing F11 twice (toggling on then off) will sound your Crossing Signal.Smoke (if Equipped)F12 – Smoke On/OffEnabling F12 will turn the smoke unit on. Disabling F12 will turn your smoke unit off.F13 – Smoke VolumeThere are three smoke volume levels in your MTH PS3.0-equipped engine –Low/Med/High. The default for this is set to High. You can adjust the smoke output(amount of smoke the generator puts out) by pressing the F13 button twice. This setsthe level to the next step. For example, if you are currently at the High smoke outputlevel, pressing F13 twice (toggling it on then off) will set the smoke volume to Low.Pressing F13 twice again will set it to Medium and so on.RailKing Diesel Engine w/Proto-Sound® 3.017SD60