badgers Posted October 22, 2021 Share Posted October 22, 2021 i have two decoders which I bought before the crovis, can any one say what is the difference between them, and would any of them fit in too mallard engine which I have in my selection,no 1 = TTS SOUND DECODER CLASS P2, R7142,no 2=TTS SOUND DECODER CLASS A4 R8107, seeing it is now gardening finished and model railway begins Link to comment Share on other sites More sharing options...
96RAF Posted October 22, 2021 Share Posted October 22, 2021 To see the individual sound function differences pull the user manuals from the downloads area and compare - if you do not already have them to hand with the decoders.Mallard is an A4 loco so R8107 is suitable. Link to comment Share on other sites More sharing options...
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