Main UI

F11: Toggle fullscreen.
Menu: Toggle side menu.
Home: Toggle waterfall.
End: Start/Stop.
CTRL + Left Click: If on slider, allows to edit the value of the slider directly.

Frequency select

Up: Increase hovered digit.
Down: Decrease hovered digit.
Left or Backspace: Move to the previous digit.
Right: Move to the next digit.
0 through 9: Set hovered digit to typed number and move to the next digit.
Enter, Delete or Right Click: Clear digit and all digits after it.
Left Click: If on top half of digit, increase digit, if on bottom half, decrease digit.
Scroll: Increase or decrease hovered digit depending on scroll amount and direction.

Left: When hovering FFT or Waterfall, move VFO down by its snap interval. If hovering the frequency select or no VFO exists, move the center frequency up by 1/20 of the visible bandwidth.
Right: When hovering FFT or Waterfall, move VFO up by its snap interval. If hovering the frequency select or no VFO exists, move the center frequency down by 1/20 of the visible bandwidth.
Scroll: When hovering FFT or Waterfall, move VFO up by its snap interval according to scroll amount and direction. If hovering the frequency select or no VFO exists, move the center frequency down by 1/20 of the visible bandwidth depending on scroll amount and direction.
Left Click: If hovering a VFO, select said VFO. If hovering over the sides of a VFO that can have its bandwidth changed manually, select bandwidth edit mode. In this case, the bandwidth of the VFO will be adjusted by dragging the edge. Otherwise move the currently selected VFO to the position of the click.
CTRL: When hovering a VFO, shows detailed information about it.
Page-Up: Cycle through VFOs from lowest to highest in frequency
Page-Down: Cycle through VFOs from highest to lowest in frequency