I'm probably making a mistake, but when I use a QT GUI Frequency Sink, and I double clic to have on the message port the frequency value, everything works ok, but if I do the same on the frequency plot of the QT GUI Sink, the block sends the selected frequency message, but changes the center frequency even if it's defined with a fixed value, the FFT of the signal remains the same, but the frequency measured changes as the X axis values.
Please have someone the same problem. I use Ubuntu 22.04 and GNU 3.10.4.0-rc1 (Python 3.10.6) Thanks a lot. Juan