Mr Soundguy class 20 logo

Mr Soundguy home logo

Class 20 functions
Function number Sound Operation
F0 - Directional lights (FOf+FOr)
F1 Startup/shutdown -
F2 Low-high short horns -
F3 Low-high horns -
F4 Brake hiss Brakes are applied
F5 Light engine mode -
F6 Air dump -
F7 Coupling/uncoupling -
F8 Flange squeal -
F9 Guard's whistle -
F10 Coach door slam -
F11 Manual coast mode (maintains idle sound at all speeds) -
F12 Fade out/in -
Class 20 notching
CV 265 value Notch 1 Notch 2 Notch 3 Notch 4 Notch 5
101 1 17 31 43 57
102 1 22 36 51 65
103 1 26 43 59 75
104 1 31 50 68 87
Notes
F4 Brake On pressing F4 the sound of the brakes being applied will be heard. At the same time, if the throttle is set to zero, the loco will slow down as if the brakes have been applied. The rate of braking can be adjusted via CV4. For best results, and to closely simulate the prototype, it is recommended to set the F4 action on your DCC controller to 'trigger' (momentary) action, rather than latching, if your DCC system offers this as an option.
This project is powered by our Mr Soundguy RealDrive system.