Need help identifying a decoder board that is out of its packaging

drgwspup Jan 14, 2021

  1. drgwspup

    drgwspup TrainBoard Member

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    Hello everyone,

    Sometimes I buy decoders when I have the extra cash and install them sometime later. I have one loose decoder board in my drawer that I cannot for the life of me identity who manufactured it and the locomotive it is designed for. I've google searched and looked at available photos on manufacturer website. Zip, Zilch, Nada. It is a drop in decoder board.

    I tend to concentrate on a consistent manufacturer for my decoders (TCS) Occasionally I buy decoder equipped locomotive from Atlas. Sometime I pick up decoders at train shows. The decoder may be a couple years old at this point.

    The board has the following markings:

    In very fine print: 637XO10R5. (the O and 0 may be misidentified because they are hard to see even under magnification)

    In slightly larger print: 4907

    No other manufacturer markings

    It's design has the four pads to collect power from the frame, which leads me to believe it is for an Atlas locomotive given the 20210113_232555.jpg 20210113_232624.jpg typical Atlas DCC ready frames.

    I'll try to upload pics, but this website challenges me in that regard.

    Thanks for reading this. Any help is appreciated
     
  2. NtheBasement

    NtheBasement TrainBoard Member

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    BigJake likes this.
  3. RBrodzinsky

    RBrodzinsky Staff Member TrainBoard Supporter

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    Yes, this is a factory installed decoder from an Atlas narrow hood diesel. I believe this may be an NCE produced decoder, but it may also be a Lenz
     
  4. McCloudRiver

    McCloudRiver TrainBoard Member

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    If you change the O to a zero in the markings a web page that no longer exists comes up but the description says it is for a Atlas Sd60. But that's all I can see.
     
  5. drgwspup

    drgwspup TrainBoard Member

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    Thanks everyone.

    NtheBasement: such a good idea but still not sure what loco it goes to -but that is a major step forward to get basic info. Thanks!

    McCloud- nice sleuthing! But I don't have any SD60s. I do have an SD50 that needs a decoder but the one in the pics is way too short to fit. I am going to check and see if the size is similar to TCS ASD4, which TCS website says fits GP 30 and 35, which I have several and two that need decoders.

    Thanks everyone! Trainboard is an awesome resource.

    Mark
     
    mtntrainman likes this.
  6. Massey

    Massey TrainBoard Member

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    Atlas made by NCE is the best I come up with. Used in GP38s and GP40's

    decoder.jpeg
     
  7. BigJake

    BigJake TrainBoard Member

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    Ahh, yes, a not-quite-so-drop-in decoder. We've come a long way, thank goodness!

    The crystal oscillator (or just crystal?) is the 2nd largest component on the decoder!
     
  8. Massey

    Massey TrainBoard Member

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    it’s just a crystal, but it’s the key component in the crystal oscillator, there will be a couple caps, and resistors that will make up the rest.
     
  9. drgwspup

    drgwspup TrainBoard Member

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