Universal Licensing System

Databases

The Universal Licensing System (ULS) database downloads for specific wireless radio services are available as zip files and are updated weekly. To stay abreast of the daily changes to the databases, you may also download daily transaction files.

NOTE: The 800 MHz Vacated Spectrum Files are not updated on a daily or weekly basis. Look for Public Notices regarding file availability updates.

Some of the database files are very large.

Universal Licensing System (ULS) also provides daily transactions files to these databases.

If you have any comments or questions about this information, please contact Technical Support.

Database Documentation

• ULS Public Access Release Notice (doc - pdf) (updated 5/31/2012)
  Summarizes the changes being made
• Introduction to the ULS public access database files (doc - pdf) (updated 4/15/2011)
• Database Field Definitions (xls - pdf) (effective 6/3/2012)
• ULS Code Definitions (pdf) (updated 5/20/2013)
• Table Abbreviations and Names (doc - pdf) (updated 8/21/2007)
• Special Condition Code (txt - pdf) (updated 6/15/2009)
• SQL for table definitions (txt) (effective 6/2/2012)
• Auction Frequency Table/Code (dat - updated 4/22/2008)
• SQL for Auction Frequency Table/Code (sql - Added 2/19/2003)

Antenna Structure Registration Documentation

• Introduction to the ASR public access database files
• Database field definitions (xls - updated 7/3/2012)
• SQL for the table definitions (txt - updated 7/3/2012)
• Code definitions for table data elements (pdf)
  (Also available in Word)

Ownership Documentation

• Database Documentation (pdf - Word)
• Data File Definitions and Code Definitions (pdf - xls) (updated 10/15/2007)
• SQL Data Definitions (updated 10/15/2007)

800 MHz Vacated Spectrum Documentation

• Introduction to the Vacated Spectrum Public Access Files (pdf)
• Data File Definitions and Code Definitions (xls - updated 12/16/2008)
• SQL Data Definitions (txt - updated 12/16/2008)

Unlicensed Wireless Microphone Registration

• Introduction to the Unlicensed Wireless Microphone Registration public access database files - (pdf - Word)
• SQL for Data Definitions (txt) (effective 6/2/2012)