I’m a new OpenHAB user and it looks like X10 options for RF transmitters is either use mochad or EXEC and run some sort of command line tool (like heyu).
I’ve a Firecracker CM17a which mochad does not support, but I didn’t really want to mess with command line spawning. So I managed to fairly quickly knock up a (limited and incomplete) mochad clone that works with my transmitter. I’ve posted it https://bitbucket.org/clach04/mochad_firecracker - this can work with GitHub - glibersat/python-x10: python module to control X10 appliances so this would be another way to get CM11a support.
This works for me but so far I’ve only experimented with switches (which is pretty much all I need).