yes, the old version of OP25 is still accessible via the SVN repo - see the wiki page which has a link to the old "obsolete" build instructions page.  It should be noted that the version in SVN is compatible with gr 3.6 (and prior gr releases), not with gr 3.7.  Additionally, the SVN version predates several of the enhancements to the code base, including the pybombs work - so you'll need to build it the old way. Finally, there is still much work to do to bring all of the capability that was in the SVN version forward to the new API and to cmake (etc).  Examples of this include the P25 TX code and certain of the repeater blocks... Max On Friday, February 28, 2014 9:01 PM, "verymetl(a)hotmail.com" <verymetl(a)hotmail.com> wrote:   Hi all, is the older OP25 code still available for the older GR API? I want to make sure before I dump the whole pybombs experiment. Don't get me wrong, I love the concept and it's ease of use, but most of the out of tree modules aren't 3.7 compliant. Half of the recipes won't even compile. All of the GR examples I find across the internet will not open in GRC, so I have to manually edit them. I'm just tired of the hassles... Thanks guys. -Scott