M.T.H. HO 4-6-6-4 Challenger Engineer's Manual page 24

Sounds
Chuff Rate
You can adjust the chuff rate from the default setting of 4 per revolution to
whatever you like between 1 and 16 per rev. Why? Some folks like to run fast and 2
or 3 chuffs per rev keeps chuffing sounds a little more distinct, even though it isn't
prototypical.
Doppler Loop
You can either press the Doppler button on the remote to activate what we refer to
as "one-shot" Doppler or, using DCS, you can program a Doppler loop that will
peak at the same point on your layout, over and over.
Custom Sounds
You can fire any of 10 individual sound bites pre-loaded into your engine. These are
typically, blow downs, steam let-offs, etc., etc. Each one at the press of a single
button. You can also make voice or other audio recordings and play them back on
command with ease.
Proto-Dispatch
Press the "MIC" (microphone) button on your DCS remote and speak. Your voice
will be digitized and played out of the model in real-time. Talk about station
announcements!
Proto-Cast
Another MTH exclusive, you can connect any audio source with a line output to the
DCS TIU and send music, train sounds, or anything you like down the rails to be
played through the engine as it moves along the track. Your holidays may never be
the same!
Smoke
In addition to a simple button labeled, go figure, "SMOKE" to toggle your smoke
on and off, you get the ability to quickly and easily adjust the output volume. In
plain English, you simply select low, med, or hi.
Lighting
As with everything in DCS, this becomes a little more than obvious. Pressing the
"HEADLIGHT" button turns of the directional head and taillight. Pressing the
Interior light will turn off the cab interior light.
M.T.H. HO 4-6-6-4 Challenger Steam Engine
24