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Media Bureau Databases

The Media Bureau provides information from its Broadcast and Cable databases for public download and use.

Users should be aware that the database information is primarily intended for staff use and may not include all the data desired. All databases and related information are provided as-is and any use is at the user's sole risk. Additionally we do not have the staff resources to permit us to provide individual assistance with setup and reading of the databases. While we strive for accuracy, users are cautioned that the databases may not be entirely free from errors. Please bring errors to our attention so that we can correct them promptly.

Broadcast Databases

  • CDBS (Consolidated DataBase System) -- CDBS is the relational database used by the Media Bureau to process broadcast applications. New users should start by reading the readme.html file, the Code Table file, and the Engineering Data Description (PDF) file.

    For your convenience, all the individual CDBS text files listed are included in the large (on the order of 40 MB) all-cdbs-files.zip zipped file. These files are automatically updated at approximately 4:30 AM Eastern time on the morning after each business day.

  • FM Service Contour Data Points -- The files contained herein consist of calculated latitude and longitude points for FM service contours, 360 points for each contour. The contour data must be correllated with data from the CDBS database, or from the FM Query. This data is intended for use with GIS systems.

  • Formatted Files -- The formatted engineering database flat files in this directory are extracted from the CDBS files above and copied into the format used by the FCC's VAX programs prior to 2000 (when CDBS was initiated). These files are primarily intended for users with programs written using the old database structure. We do not recommend the creation of new programs based on this old structure.

  • Broadcast Source Code -- Source code to some of the Bureau's technical programs is posted in this directory. Users are advised that the source code is provided as-is and may not represent the code currently in use, and in some instances the code will not comprise a complete program. We do not guarantee it will compile on any particular system. The Bureau makes no commitment either to provide additional or updated code on request nor to provide copies of programs currently in use.
  • Cable Databases

  • COALS (Cable Operations and Licensing System) -- The COALS database (updated nightly) and related information is available through the linked page.


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