View source for 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.

the build-gnuradio script is hosted on http://www.sbrac.org and is avalible for review by clicking this link.
[http://www.sbrac.org/files/build-gnuradio build-gnuradio]


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)

<code>mkdir src</code>

would make a new directory named src

cd 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.

<code>wget http://www.sbrac.org/files/build-gnuradio && chmod a+x ./build-gnuradio && ./build-gnuradio -v all</code>

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 [http://spench.net/drupal/files/build-op25 build-op25].

<code>wget http://spench.net/drupal/files/build-op25 && chmod a+x ./build-op25 && ./build-op25 -v all</code>

Once GnuRadio and OP25 are installed, you can test the decoder in GNU Radio Companion by opening the [http://svn.spench.net/main/gr-baz/samples/OP25.grc OP25.grc] file. 

Make sure you:

# ran the scripts above to install gnuradio,[[gr-baz#op25|gr-baz]], and op25.
# enable the appropriate source block for your setup (e.g. [[USRP]], [[RTL2832U]] dongle or file source), and disable the rest!