Hi all, I work on a Frequency Hopping (FH) Tx and Rx in the same grc flowchart in 3.7.13.4 in Ubuntu 16.04. At the end of the Tx chain, I put a "Qt GUI Frequency Sink", but it just shows part of subchannels in the spectrum!!! I changed its parameters especially "Update Period" but no change. The very interesting point is that when I remove the Rx chain (lessen the complexity), it shows the spectrum of FH correctly! I really wonder why.
Thanks, AGD