DATA SOURCES (J6)
Government Master File
The Government Master File (GMF) contains records of the frequencies assigned to all US Federal Government agencies in the US and its possessions. The master file is updated daily.
Federal Communications Commission File
The Federal Communications Commission (FCC) file contains the records of frequencies assigned, by the FCC, to state and local government agencies, and to the private sector. This data is updated semi-annually.
Canadian Date File
The Canadian Date File (CDF) contains data (updated semi-annually) on Canadian frequency assignments excluding military. Data Source: Industry Canada Data
International Frequency List
The International Frequency List contains records (updated semi-annually). for international frequency assignments that nations choose to register with the International Frequency Registration Board (IFRB). Data Source: International Telecommunication Union (ITU) in Geneva, Switzerland
Master Radio Frequency List
The Master Radio Frequency List (MRFL) contains data, which is updated semi-annually, on frequency assignments used by US forces in NATO Europe and data on all NATO assignments in the 100-156 MHz, the 225-400 MHz and the 960-1215 MHz frequency bands. Data Source: Frequency Management Subcommittee (FMSC) of NATO
Radio Astronomy File
The Radio Astronomy (RA) file contains a list of frequencies used throughout the world that are of particular interest to radio astronomers. This data is manually updated at the JCS as data becomes available. Data Source: National Research Council
EMI Resolution Data
The Joint Spectrum Interference Resolution (JSIR) Database was developed to store reported EMI incidents/resolutions. Within each Service, EMI incident reports are sent in message format. Copies of each of these messages are forwarded to the JSC and are stored in the JSIR database. All message traffic on interference incident and resolution is used to generate JSIR records. The database, which is maintained and updated monthly, contains data on reported interference from the 1970s until the present. Prior to June 1992, this data was referred to as Meaconing, Intrusion, Jamming, and Interference (MIJI) data and was maintained by the, Joint Electronic Warfare Center.
Radiation Hazards Data
The Joint Ordnance E3 Risk Assessment Database (JOERAD) provides Hazards of Electromagnetic Radiation to Ordnance (HERO) susceptibility data for all DoD ordnance fired by an electrically initiated device (EID). These EIDs can be affected by high-power electromagnetic radiation. This database includes measured and specification data for safe handling and storage of ordnance in an electromagnetic environment, as well as data to assist in HERO impact assessments, such as emitter characteristics and equipment complement data for military units and platforms.