MTH Locomotive | F3 | Electrical

MTH

Locomotive

F3

Electrical

4-digit Address Calculator

To correctly program the 4-digit address of the MTH F3 locomotives equipped with DCS ProtoSound 3.0 decoders, use the following steps:

1. Determine the number you want to use for your engine (typically the engine's road number). For our examples, we will use "3549". DCC requires this number to be between zero and 9999.
2. Divide that number by 256, e.g. 3549 / 256 = 13.8632...
3. Round that number down, e.g. 13.
4. Add 192 to that number, e.g. 13 + 192 = 205.
5. Program that resulting number into your engine's decoder for the CV #17 setting.
6. Next, take the number calculated in step #3 above, e.g. 13.
7. Multiply that number by 256, e.g. 13 x 256 = 3328.
8. Subtract that result from your desired road number, e.g. 3549 - 3328 = 221.
9. Program that resulting number into your engine's decoder for the CV #18 setting.
10. That's all there is too it!

MTH

Locomotive

F3

Electrical

Headlights

For the dual-headlight models, Rich Gajnak provides the following information.

These engines have bracketing to both lights on the cab interior casting. Note that both the SHS and MTH models are the same, except that the SHS models use lightbulbs and MTH's have LEDs. These models have the active headlight in the upper opening regardless of whether it is a single- or double-light version. Real-world F units have the MARS light (when so equipped) in the upper opening and the headlight in the door. For the MTH F units it was a matter of swapping plugs at the DCS/DCC PC board.