OP25 How To Build
To Install OP25 you need to first build and install GNURadio.
The easiest way to build GNURadio is to use the build-gnuradio script.
We can automate its download and excution with the following command. This will build and install gnuradio as well as extra features like support for gr-baz and the rtl_source so that gnuradio can be used with usb sdr rtl hardware.
first make a directory by using the mkdir command in a terminal window. (You can start terminal in Ubuntu with shortcut (Control + Alt + T)
would make a new directory named src
would then change to this new folder
next we can download, make executable, and then execute the build-gnuradio script with the following command.
wget http://www.sbrac.org/files/build-gnuradio && chmod a+x ./build-gnuradio && ./build-gnuradio -v all
This script can take some time to run but with the -v command you should see progress on the screen.
Next we need to download and run OP25.
This can be done by running another build script build-op25.
wget http://spench.net/drupal/files/build-op25 && chmod a+x ./build-op25 && ./build-op25 -v all
Once GnuRadio and OP25 are installed, you can test the decoder in GNU Radio Companion by opening the OP25.grc file.
Make sure you: