I am using the AD9361 / Zync Ultrascale+ part (reference fpga design) with GNU Radio and the gr-iio FMCOMMS blocks in an attempt to receive public broadcasts, ATSC television transmissions specifically. FM Radio *works, but any sort of digital demod doesn't seem to be working. I have used these flowgraphs with several other sdr platforms successfully, which leads me to believe somewhere data is being dropped. Has anyone been able to get something like this working with similar hardware and the ADI software? Let me know if I can provide any further information that may help. Thanks.