This project contains a set of connectors that are used by OpenWebRX to interface with SDR hardware.

For this purpose, there's two sockets on every connector:

• a data socket that relays the IQ stream read from the SDR device to multiple clients
• a control socket that allows the controlling instance to change SDR parameters at runtime (e.g. frequency, gain, ...)

By default, the IQ sample format is 32bit floats.

For backwards compatibility, the connectors can additionally provide a secondary socket that provides data in a format compatible with rtl_tcp. Use the --rtltcp option together with the port number you would like to use.

If necessary, the connector will resample the IQ data to an 8 bit data stream as required by the protocol. This means that if your SDR device has a higher sample depth, a loss of data will occur, so other options should probably be preferred.

The connectors do not evaluate any data on an rtl_tcp client connection, so any incoming commands will be discarded. This means that applications using rtl_tcp compatibiltiy will not be able to control the SDR hardware.

The OpenWebRX project is hosting owrx-connector packages in their repositories. Please click the respective link for Debian or Ubuntu.

• Please install csdr (version 0.18 or newer) before compiling this project.
• (optional) If you want to work with rtlsdr devices, you will need to install the corresponding header files (on Debian: apt-get install librtlsdr-dev)
• (optional) If you want to work with devices supported by SoapySDR, you will need to install the corresponding header files (on Debian: apt-get install libsoapysdr-dev)

If you have compiled rtlsdr / soapy from source, you should not need to worry about this. The installation should place the headers in their correct locations.

This project comes with a cmake build. It is recommended to build in a separate directory.

mkdir build
cd build
cmake ..
make
sudo make install