Keyboard Shortcuts¶

Radio Controls¶

Key	Action
`F2`	Start / Stop radio
`Space`	Pause / Resume radio
`F3`	Mute / Unmute
`I`	Read signal strength, stereo/mono, RDS, CTCSS, squelch state

Tuning¶

Key	Action
`Q`	Report LO (tuned) frequency
`O`	Report listening (demod) frequency
`Ctrl`+`Q`	Enter LO frequency (opens dialog)
`Ctrl`+`O`	Enter listening frequency (opens dialog)
`Up`	Tune up by step
`Down`	Tune down by step
`Shift`+`Up`	Tune up by 10x step
`Shift`+`Down`	Tune down by 10x step
`S`	Cycle tuning step size

Volume and Squelch¶

Key	Action
`Page Up`	Volume up (+5%)
`Page Down`	Volume down (-5%)
`Shift`+`Page Up`	Squelch up (+3 dB)
`Shift`+`Page Down`	Squelch down (-3 dB)

Demodulation Modes¶

Press M first, then the mode letter:

Key	Mode
`M` `W`	Wide FM (broadcast)
`M` `N`	Narrow FM
`M` `A`	AM
`M` `U`	USB (Upper Sideband)
`M` `L`	LSB (Lower Sideband)
`M` `C`	CW (Morse)
`M` `D`	DSB (Double Sideband)

Spectrum¶

Key	Action
`F`	Speak top spectrum peaks
`G`	Describe current spectrum range
++=++ / `+`	Zoom in (halve span)
++-++	Zoom out (double span)
`Backspace`	Reset zoom to full spectrum
`F5`	Sonification snapshot sweep
`Ctrl`+`F5`	Toggle continuous sweep

Spectrum Cursor¶

Key	Action
`Ctrl` (hold)	Play probe tone at cursor position
`Ctrl`+`Left` / `Ctrl`+`Right`	Move cursor while probing
`Left`	Step cursor left and announce
`Right`	Step cursor right and announce
`T`	Speak cursor frequency and power
`C`	Reset cursor to centre, clear demod offset
`Ctrl`+`T`	Tune LO to cursor frequency, clear offset
`Shift`+`C`	Toggle "demod follows cursor" mode

Hold Ctrl to hear a continuous probe tone at the cursor's position — pitch indicates signal power, stereo pan indicates frequency position. While Ctrl is held, press Left/Right arrows to move the cursor through the spectrum. Release the arrows to stop moving (tone continues). Release Ctrl to stop the tone. Use Left/Right without Ctrl to step the cursor silently and hear the position announced.

When "demod follows cursor" is enabled (Shift+C), moving the cursor with Left/Right or Ctrl+arrows also shifts the demodulator to listen at the cursor's frequency via a software VFO offset. Press C to reset the cursor and offset to centre. Press Ctrl+T to retune the hardware LO to the cursor and clear the offset.

Dialogs¶

Key	Dialog
`Ctrl`+`R`	RF Settings (gain, PPM, sample rate)
`Ctrl`+`S`	Spectrum Settings
`Ctrl`+`N`	Scanner
`Ctrl`+`B`	Bookmarks
`Ctrl`+`D`	Audio Settings (device, buffer size)
`Ctrl`+`W`	WFM Settings (de-emphasis, stereo, hi-blend, RDS)
`F1`	Keyboard Shortcuts help

Scanner (when open)¶

Key	Action
`H`	Hold on current frequency
`K`	Skip to next frequency
`Esc`	Stop scan

General¶

Key	Action
`Alt`+`R`	Open Radio menu (band presets)
`Ctrl`+`Shift`+`B`	Save bookmark
`Alt`+`F4`	Quit