Welcome to the (old archive copy of the)

Digital Command Control Working Group's

Web and Archive Site

The purpose of this Web site and archive is to allow for easy accessibility to information about Digital Command Control (DCC). The National Model Railroading Association (NMRA) has been working for several years to develop standards and recommeneded practices for DCC. Two NMRA organizations are working in support the DCC effort:
  • DCC Special Interest Group(SIG)
    Open to both NMRA members and non-members, the SIG was chartered to
    provide a focal point for modelers interested in DCC. The SIG produces
    a newsletter (available by subscription), and provides the opportunity
    for modelers interested in DCC to make inquiries, exchange information, ect.

  • NMRA Electrical Committee: Command Control Working Group
    This group focuses on the development of NMRA Standards, NMRA
    Recommended Practices, and NMRA Data Sheets on DCC. Including both
    modelers and manufacturers, this group has been responsible for the
    development of NMRA Standards S-9.1 and S-9.2, as well as the on-going
    work on various Recommended Practices. It is also responsible for
    conformance testing as it relates to the NMRA DCC standards.
    DCC FAQ Version 1.9 - This version of the FAQ is a cross between the text and postscript versions. It contains inline transparent graphics (89a) which some older browsers may not read.

    PLEASE NOTE: All approved standards and RP's are now Copyright NMRA and will appear on the NMRA Web pages in the Standards and Recommended Practices section in full HTML for viewing and printing. All other unapproved documents will remain here.

    DCC Archives - From here you can view and download the files on this archive

    All inquiries as to content and further DCC information, please contact the following:

    John Balogh
    DCC SIG
    3077 Williamsburg Drive
    State College, PA 16801-3016
    (814) 863-1252 (work)
    or online at: JDB@psu.edu

    The relevant NMRA specifications are provided here in to to make it easier for manufacturers, prospective manufacturers and modelers worldwide to kept abreast of the the work in this area. Anyone needing official copies of NMRA Standards S-9.1 and S-9.2 can contact the NMRA headquarters at:

    National Model Railroading Association, Inc.
    4121 Cromwell Rd.
    Chattanooga, TN 37421 USA
    Phone: [1] (423) 892-2846 FAX: [1] (423) 899-4869

    General inquiries about DCC should be directed to the DCC SIG.

    If you experience problems with this site or want to send files for placement, please contact me at:
    jdb@psu.edu