XRS - Extensible Radio Specification XRS Technology: Interfacing radio with computers.
Specification Download

The XRS specification is provided in PDF format. To be able to read this format, you need the Acrobat reader by Adobe. This software is free. If you don't have the Adobe Acrobat reader, we have provided a download link here for your convenience.

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You can download complete XRS specification from here:

 Download XRS Version 1.2

Summary of differences from XRS Version 1.1 can be downloaded from here:

 Download XRS 1.1 - 1.2 Differences