73 from ZS6AAG, i am using also a hackrf to transmit on AO100 from near 2 months now. I use SDR Angel to transmit under win10. I have an equivalent setup for the transmitter but i use the CN1047 as a amplifier after the Hackrf one.
I have also linux on one computer with GNU radio i will be happy to test it, but my knoledge under linux is not so good.
Les meilleurs 73,
ZS6AAG alias TT8JLH, C91MSF, 3DA0MF, 7Q7MS