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# GNU Radio

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Related articles

- DVB-T
- RTL-SDR

GNU Radio is a free & 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.

## Installation

The latest stable GNU Radio version can be installed with gnuradio.

Bleeding edge is gnuradio-gitAUR, and in some cases VOLK may need to be built separately from libvolk-gitAUR.

If you want `gnuradio-companion`, just install the gnuradio-companion package which will install GNU Radio, as well as some additional required packages.

Another popular package is gnuradio-osmosdr which provides the GRC source blocks for many of the popular SDR devices (Funcube Dongle, RTL-SDR, USRP, OsmoSDR, BladeRF and HackRF).

## Troubleshooting

### TypeError: in method 'source_sptr_set_gain_mode', argument 2 of type 'bool'

When using an (osmocom) RTL-SDR source, you might see this error. The workaround is to manually set the Gain Mode to `True` or `False`.

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- Science