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# GNU Radio C++ API Reference

Welcome to GNU Radio!

GNU Radio is a free and open-source software development toolkit that provides signal processing blocks to implement software radios. It can be used with readily-available low-cost external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in hobbyist, academic and commercial environments to support both wireless communications research and real-world radio systems.

The main GNU Radio organization website is located here.

The GNU Radio Wiki contains all of the information to get started, find documentation, develop GNU Radio software, and to get involved in the community.

This C++ API Reference contains a list of all GNU Radio Components, Modules, Namespaces, Classes, and Files. To access these parts, use the tree browser in the left sidebar. A search function is also available at the top right.