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FAQ:Railcom and NCE Decoders

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DCC Categories Command Station, Multifunction Decoder
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With an update to the NMRA DCC Specifications, older NCE decoders which were compliant are no longer. The issue arises when RailCom is active on the command station.

When RailCom is enabled, older NCE decoders may operate erratically or with unexpected results. Disabling RailCom prevents these issues should they arise.

Command stations made with RailCom on board cause this issue. Not all manufacturers support RailCom. Most older systems lack RailCom capability. See your manuals to learn if your system has RailCom, and how to disable it.