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 · GitHub 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).