Engine SoundsF25 – Engine SoundsYou can turn the Engine Sounds On/Off by pressing the F25 button. Pressing it once(enabling F25) will cause the Engine Sounds to shut off. The Whistle/Horn and Bellsounds will still be active, however. To turn the engine sounds back on press the F25button again (disable F25).Additional F FunctionsF14-F16 – Idle SequencePressing F14, F15, or F16 twice (toggling on then off) will trigger an Idle Sequence ifthe engine is not moving. These vary from engine to engine and may include thingslike checking the coal load, checking the water level, using the Alemite grease gun onthe drivers, etc. When triggered, these will run through the sequence that varies induration.NOTE – The engine must be sitting still in order to trigger theseF17 – Extended Start-UpIf your engine is shut down or you've just applied DCC power pressing F17 twice(toggling it on then off) will start the Extended Start-Upsounds. This is very similar to F3 except you will hear the crew talking back and forthabout getting the engine ready to run.F18 – Extended Shut-Down.If your engine is already up and running you can playthe Extended Shut Down sounds by pressing F18 twice (toggling on then off). TheExtended Shut Down is very similar to F3 in that the engine will ultimately shut down,but in the case of Extended Shut Down you will hear the crew talking back and forthabout how the engine ran, time schedules, etc.F19 – Rev UpPressing F19 twice will increase the diesel engine's rev level by one notch. Two morepresses of F19 will rev the diesel engine to the second notch and so forth. You can revthe engine up 7 notches from idle. This is useful if you wish to simulate a heavy loadbehind the train and want to rev the diesel engine up.F20 – Rev DownPressing F20 twice will decrease the diesel engine's rev level by one notch. Two morepresses of F20 will rev the diesel engine down one more notch and so forth. You can revthe engine down to its idle rev level as long as it's sitting still.F21 – One Shot DopplerYou can set your MTH PS3.0-equipped engine to simulate the actual Doppler Effectsound a real engine makes as it passes you. To do this, press the F21 button once (enableF21) and then listen as the engine makes that pitch shift that mimics the Doppler Effectperfectly. Press the F21 button again (disable F21) to shut off the Doppler Effect. With alittle practice in timing and speed you can make this happen right in front of you.RailKing Diesel Engine w/Proto-Sound® 3.018SD60