LNER A4 (Hornby/Bachmann) 

Steam sound decoder for the Hornby & Bachmann 21Pin or 8Pin Locomotive 

Please Note: Space it limited inside the locomotive, the options are:

Option 2: 8 Pin Standard & Sugarcube Spk (a 2 Pin Micro Connector can be used for fitting a larger speaker into the tender, if used the female socket should be connected to the sound decoder, the male plug fitted on the speaker.

Option 5: Next 18 Micro - 8Pin (If ordering this, please put in the comments box 'PLEASE SUPPLY AN 8 PIN MICRO'

Option 14: This ESU Standard decoder & Bass Speaker will go in the Tender, if the coal bunker is modified.

Other Options & Speakers are listed.

  ***IMPORTANT: All sound decoders we recommend be sent Insured special delivery***

Each decoder comes with a comprehensive list of unique functions to help enhance your driving experience:

We suggest that you print off the Function list when ordering, as this will save you looking for it later.

Function Key . 

F0 Lights On/Off. (If fitted).

F1 Sound On/Off. (Fade Sound while Driving)

F2 Whistle 1

F3 Whistle 2

F4 Uncoupling Sounds / Buffer Clash

F5 Loco Active Brake Application (CV179 Increases/Decreases Brake Application)

F6 Wheel Slip (Not on all Projects).  

F7 Injector.  (Latching)

F8 Automatic Uncoupling.  

F9 Flange Squeal (Speed Dependant)

F10 Despatch Whistle.

F11 Wagon Buffer Clash & Starting/Stopping noises.

F12 Coal Shovelling On/Off. (Latching + Aux 1 Firebox Glow)

F13 Tender Water Filling.  (Latching)

F14 Safety Valves. (Latching)

F15 Cylinder Drain Cocks On/Off (Works at Low Speed).

F16 Heavy Load Starting Mode. (Latching)

F17 Shunting Mode. (Switch between Light & Heavy chuffs)

F18 Detonators. (Alternate)

F19 Random Sounds On/Off

F20 Aux 2

F21 AWS Bell

F22 AWS Horn (Slows loco down)

F23 Coach Door Slams (Alternate/Latching)

F24 Wheel Tapper (Latching)

F25 Westinghouse Pump (If Fitted on Locomotive)