strx: Switch to 4 MHz bandsidth.
strx-mon: Switch to 4 MHz bandsidth.
Merge branch 'master' into dual
strx-mon: Add qtgui target to build script.
strx: I/Q recording implemented.
strx: Indicate that strx::freq is read only.
strx-mon: Fixed bug that prevented plotter to work above 'int' frequencies.
strx-mon: Correctly set up FFT plot.
strx: Add support for swapping between two channels.
strx: Make filter cutoff available to clients.
strx-mon: Update filter offset at 1 Hz.
strx-mon: Update Center frequency at 1 Hz.
strx-mon: Update filter cutoff at 1 Hz.
strx-mon: Add button for swapping the channels.
strx-mon: Control filter offset from gui.
strx-mon: Implement record button functionality.
strx: Make I/Q recorder unbuffered to avoid sudden UI freezes.
strx-mon: Trigger UI update when channel is swapped.

We reset the callback counter every time the CHAN button
is pressed. This will force an update the next time the
callback is executed.
strx-mon: Implement filter cutoff control.
strx-mon: Only update filter offset if new value is different from old one.