The gr-adsb package has a receiver example. Is there an example of a adsb transmitter? If not, how difficult would it be to convert the rx into tx? Would it be similar to replacing the USRP Source with a Signal Source and replacing the ZMQ PUB message Sink with a USRO Sink (this sounds too simplistic, but one can hope)?
https://github.com/mhostetter/gr-adsb
