Earth Frequencies

Welcome to the Earth Frequencies wiki!

This is a collection of machine parseable data files, intended for use in an amateur context, that describe radio frequency allocations and channels.

Currently this is an experiment into how best the data can be represented for use in applications. For example, for SDR applications that can select an appropriate data representation, loading the appropriate module, based on what it 'knows' should be in the frequency it is scanning.

This should NOT be considered a primary source for this information. You should always check official sources for accurate data about allocation and usage requirements.

Feedback and contributions are welcome. At the moment the project is still taking form, with the general data format in flux. Collaboration is appreciated to improve the data quality and data format.

Originally the 'Earth Frequencies' project was focused around the frequency allocation tables provided by the Internation Telephony Union (ITU) and members. While this is still a primary objective, inclusion of other radio frequency data types has also been included to help provide a single location to find this data.

The data files have gone through a number of iterations, based on working with available data sources and type have suggested changes in nomenclature and structure. As the project matures these changes should reduce in frequency.

Geography

In terms of geography, the project, for the time being, will only cover frequencies that can be generalised on a national or larger area. This means anything frequency data that is limited to the scope of a city or similar sized area will not be included. The current reasoning is that we want to build a solid base with data that appeals to a larger audience and then later we can re-evaluate as appropriate.

When countries are specified in a field on its own, then it will be specified in ISO2 format, with the exception of the ITU regions, while are represented as ITU1, ITU2 & ITU3.

Language

The primary human language used by the project is English, with other languages being used as appropriate. This choice is made due to many of the source documents already being in English and as it provides access to a larger base of potential contributors, recognising it as frequent primary or secondary language.

Limitations

As indicated above, you should not use the data in this project in areas where there are legal and risk concerns. Data quality is always a challenge and even more so in volunteer projects. Even if data comes from an official source, there may be errors either due to typo, conversion algorithms or from upstream.

You are encouraged to do your own data audit and check with official data sources, if your use of this data depends on quality and accuracy.

License

Treat the data in this project as 'public domain', though you should double check with upstream data sources, where applicable. It would be appreciated that sources are acknowledged in all cases.