ADIF - Amateur Data Interchange Format - is an open standard for exchange of data between amateur radio software,
services and websites.
ADIF specifications are prepared by the
ADIF Developers Group,
where requests can be raised, errors reported, and assistance provided.
For convenience, the link
https://adif.org.uk/adif
will always redirect to the most recent released version of the ADIF Specification HTML file.
Additionally, the link
https://adif.org.uk/ADIF_Current
will respond directly with the most recent released version of the ADIF Specification HTML file without a redirection.
Applications that want to access the most recent ADIF-related files (such as XML schemas) can read
the text file
adiflatestrelease.txt, which contains the version number of the most recent release as a 3-digit number,
e.g.
316 represents ADIF Version 3.1.6.
(For reliability and performance, please download and use copies of the schema files.)
This can be used to construct the file names.
For example, the ADIF Version 3.1.6 ADX XML schema files are named:
316/adx316.xsd
316/adx316generic.xsd
Due to blocking by the website's hosting provider, accessing the files other than with well-known browsers requires specific User-Agent HTTP header values.
At the time of writing (2025-09-18), the following User-Agent values are known to work:
- Web browser user agents (Mozilla/5.0 etc.)
- curl's default user agent ("curl/8.13.0")
- An arbitrary User-Agent header like "My ADIF Tool"
- Suppressing the User-Agent header. E.g.
wget -U '' https://adif.org.uk/
Thanks to Trevor WT0RJ for providing the information on User-Agent values.